62 O R D E E - C O L E O P T E R A . SECTION—PENTAMERA.
GEOUP C. (=Sect ion I. Horn). Mentum with the hind margin entire.
SPECIES 9 (95)—CREMASTOCHEILUS PLANATU8.
PLATE XIV, FIG. 5.
Elono-atus ater, fere opaeiis ; capita pnnctato, thorace piano varioloso, Latitudine panlo breviore, laterihus
valdo rotundatis, anijulis anticis auricuktis; postieis productis acutis nitidis, snloo definitis; elytris thorace
sesqni-latioribus, eonfertim aciculato-punctatis, dorso planis, laterihus et apice suhito valde deelivibns ; tarsis
elong-atis, anticis diflbrmibus.
Lon^. corp. lin. 8-9.
H a b i t a t ; Arizona (Dr. Irwin), U.S.A., (Leconte), Texas (Schaum in CoU. Turner).
SYN.: GremastocheiUs planatus. Leconte, New Spcoies of North Amer. Colcopt. in Smith's Miscell. Coll. March,
1863, I. p. 8I .
Cremastochdlus deplanatiis. Schaum in litt.
OreniastocJmihis procerus. MS. in Coll. Eoyal 3Ius. Berlin.
Head punctured, somewhat dilated in front, with a longitudinal carina on the clypeus, and two elevated
ridges inside of the eyes not reaching the anterior margin. Thorax flat above, pimctiu-ed, the punctures rather
distant, with a faint longitudinal impression in front of the basis, broader behind the apex than at its basis;
the sides rounded with asleep incision behind the anterior angles, which are prominent and subacute; the hind
ano.les acute, directed backwards and a little inwards. Scutellum with some distant large prmctiires. Ely1;ra
twice the leno-th of the thorax, very flat on the disc, elevated and almost carinated at the sides, pnnctnrcd, the
punctures large but not deep; aciculate. Under side black, shining, sparingly covered with moderate sized
cicatricose punctures, larger on the breast than on the last segments of the abdomen, of which the three basal
segments are longitudinally impressed iu the male. .
The mentum of this very large and remarkable species is very concave, punctured, with the posterior
maro-in entire, and produced "into a moderately acute point (fig. 5 e, seen from below; fig. 5/, seen sideways)
Fio- 5 a represents the head seen from above; fig. 5 h, the basal portion of the left side of the head and front
of "the prothorax; fig. 5 e, one of the mandibles; fig. 5.7, one of the maxilte; fig. bg, one of the anterior tarsi
iu the male, which are singularly formed; the fourth and fifth joints are enlarged and much compressed, but
t h e claws are scarcely larger than in the other feet. The pygidium is very closely punctured, and obtusely
carinated The punctures of the elytra are oval and often confluent (fig. 5 h, 5 i), formed by a deeply sunk and
slender line, the edges of which, on both sides, are slightly raised so as to form a sharp margm on both sides
the imiwessed line, the inclosed space of the puncture being but slightly depressed.
SPECIES 10 (96)-CB,EMASTOCHEILUS DEPRESSUS.
' Black feebly shining. Head sparsely punctured, with short carina at middle of clypeus, and a lateral
carina extending from the occiput, where it is highest, to the reflexcd clypeal margin; occiput with transverse
o-roove. Thorax, one-fonrth broader than long, broadest at anterior third; sides strongly rounded in front
Gradually narrowed to base; anterior angles moderately prominent, limited by a slight snlcns m the lateral
maro-in; hind angles not prominent, Umited within by a slight sulcus parallel with the margm; basal margin
lobed at middle disc coarsely punctured, and with a shallow median sulcus deeper and broader behind. Elytra
flat- disc limited by slight elevation; sides slightly convergent behind; surface punctured with elongate
shallow foveiE, at the sides rounder. Terminal spiracle feebly prominent. Pygidinm sparsely foveate, and
subcarinate at middle. Body beneath more shining, sparsely foveate-pnnctate ; sides of prothorax with distmct
strigas. Legs slender ; anterior tibia; slightly arcuate; teeth obtuse, nearly obsolete.
' L e n g t h , ' 6 6 inch. = 17 millim.
'Two specimens taken by Mr. Gabb in California, probably in the southern end of Tulare Valley. Close y
allied to Cr.planatus, which has the hind angles of the thorax prominent and smooth, and the teeth 0 the
(fore) tibiiE acute. The fourth anterior tarsal joint is suddenly broader than the preceding, and equals twicc
its breadth. The anterior edge of the mentum plate is thickcr, and in the concavity more coarsely punctured.
STS. : Cremastocheilus depresses. Horn, Trans. Amer. Ent. Soc. Dec. 1871, p. 340.
FAMILY—CETONIIDIE. SUB-FAMILY—CREMASTOCIIEILIDES.
SPECIES 11 (97)—CEEMASTOCHEILUS ANGULAEIS.
PLATE XIV, Era. \.
Ater opacus, breviter setosus; thorace eonfertim pnnctato, laterihus antice rotundatis, postice obliquis,
anguHs anticis foveatis acutis, postieis productis elevatis acutis, impressione obliqua definitis ; elytris pnnctis
minus profundis ellipticis ; mento concavo postice subacuminato (fig. 1 a).
Long. corp. lin. 6.
Habitat; California (Sacramento, Wittick), Vancouver's Island. In Mus. Britann., Berol., Hopeiano
OxoniiE, Mniszech.
SY». : Grianasloolieilus angularis. Leconte, Report upon Insects in Survey of Route adjacent to 47th Parallel, June,
1857, vol. ix. p. 37.
Gremaslocheihis armatus. Walker, in Lord's Natur. Vancouver, ii. 1866, p. 320.
This, in Ibrm, size, and general appearance, resembles C. cctnaliculcdus, but the mentum is of a different
form, and on comparison many other differences may be seen. From C. Schmimii Lec. (Proc. Acad. Nat . Soc.
vi. 231) it differs by the smaller size, less rounded sides, but more acute angles of the thorax, and by the
posterior angles being separated by a small but deep oblique impression : near the margin of the elytra may be
seen a few whitish transverse undulated lines. The head is covered with minute rugose punctures, the disc
rather circular and flat. The punctures on the thorax and elytra are of nearly equal size and form, irregular,
numerous, very rarely confluent, each with the centre slightly raised, and emitting a minute seta ; the pygidium
is covered with rather large round punctures. The body beneath is glossy, with much fewer and smaller
punctures ; the abdomen on the under side has a scarcely visible depression in the middle of the second segment.
Mr. I. K. Lord, who collected several specimens of this species, informs me that it was taken at Colville,
and is found all along the course of the Columbia river, as well as in Vancouver's Island. Its habit is to
frequent the roots, and to hide in the fallen leaves of the wild sage bushes {Artemisia), that grow on the sandy
plains of the Columbia. Mr. Higgins has recently received this species from Japan : an interesting fact in the
geographical distribution of the group.
SPECIES 12 (98)—CEEMASTOCHEILUS PILOSICOLLIS.
' B l a c k opaque; head convex coarsely punctured, and clothed with long erect black hairs; thorax
moderately convex, densely and coarsely punctured, and clothed with long black erect hairs ; anterior margin
truncate at middle, rather suddenly sinuate within the anterior angles, wliieh are moderately prominent; sides
rounded and slightly sinuate near the hind angles, which are moderately prominent, acute, and limited within
by a faint groove. Elytra slightly convex, parallel, surface with coarse deeply impressed punctures, and sparsely
pilose. Last spiracles moderately prominent. Pygidium convex, with coarse fovea) and long hau-s. Body
beneath coarsely punctured, and sparsely hairy ; mentum with an obtuse point behind.
' L e n g t h , ' 44 inch. = 11 millim.
' This species greatly resembles Cr. angularis, but is more convex and clothed with much longer hairs. The
main difl:erence between the two species is in the form of the tarsi and tibiaj, of which mention has already been
made.
' One specimen from Nor t h Western California, collected by Mr. Gabb.'
SYN.: Cremastocheilus pilosicoUis. Horn, Trans. Amer. Ent. Soc. 1871, p. 341.
SPECIES 13 (99)—CEEMASTOCHEILUS NITENS.
PLATE X IV, FIG. 2.
'Niger, nitidus; thorace postice subito constricto, ante basin depresso; disco sparsim punctato;^ elytris
coniUientcr punctatis, humcris seapulisque Isevigatis ; mento basi integro et parum angulato (flg. 2 a, capite infra
viso ; 2 e, mento oblique et e prosterno viso). Variat (in Mus. Leconte) colore piceo rufo.'
Loug. corp. lin.
H a b i t a t ; Missouri : foimd at the forks of the Platte Eiver.
I ';