126 OEDER—HYMENOPTERA.
SPECIES 10—TRIGONALYS HAHNII.
(Spinola, Guéi-iu Mag. de Zool. Ins. 1840, pi. L ; Westw. Trans. Ent. Soc. ist Scr. voi. iii. p. 274.)
Habitat ; Europe, England.
SYN. : Trigonahjs nigra. Westw. JIS., in olim ; Trans. Ent. Soc.
Trigonalys Anglicana. Sliuckard, Entomologist, p. 122 ; Sioliel. Ann. Soc. Eut. France, 1864, p. 67.
Abastus MacqnaHii. St. Fargeau, Guérin, Eev. Zool. 1842, p. 84.
SPECIES 11—TRIGONALYS PULLATA.
(Lycogaster pullata, Sliuckard, Entomologist, p. 124 ; Westw. Trans. Eut. Soc. vol iii. p. 274.)
Habitat ; North Carolina.
SPECIES 12—TRIGONALY'S ilAGULATA.
(Smith, Ann. Nat. Hist. 2nd Ser. vol. vii. p. 28 ; mstw. Trans. Ent. Soe. 2nd Ser. vol. i. p. 231, pi. Ti l , fig. 4.)
Habitat; lloreton Bay, Australasia.
SPECIES 13—TRIGONALY'S GUNDLACHII.
(Cresson, Proc. Ent. Soc. Philad. iv. p. 10, 1863.)
Habitat; Cuba.
SPECIES 14—TRIGONALYS PULCHELLUS.
(Cresson, Proc. Ent. Soc. Philad. vol. vi. p. 351, February, 1867.)
Habitat ; ATestern Virginia.
SPECIES 15—TRIGONALYS (LYCOGASTER) COST A ITS
(Cresson, Proc. Ent. Soc. Philad. vol. vi. p. 352.)
Habitat ; Massachusetts.
GENUS—JIONOMACHUS. (Klug. MSS.)
(Westw. Trans. Ent. Soc. Lond. ist Ser. vol. iii. p. 252.)
M O N O J I A C H U S ANTIPODALIS.
PLATE SXIV, FIG. 1.
jS iger, nitidus, crebre et minute punetatus ; abdomine elongate paruni piceo ; antennis pedibusque piceorufis,
illis 14-artieulatis, articulis apicalibus sensim paullo erassioribus ; pedum femoribus inerassatis, tibiis
duabus postieis e medio ad apicem dilatatis; alis thorace duplo longioribus hyalinis iridescenti bus, stigmate
venisque nigris ; abdomine fere thorace triplo longiori apice deflexo. (Foem.)
Long. corp. lin. 8J ; expans. alar, antic. Hn. 7| .
Habitat ; ilelbourne, Australia. In Mufs. Hopeiano Oxonise.
All the species of this genus hitherto known and described in my Monograph above referred to, are natives
of South America. We have therefore here another instance of remarkable types of form occurring iii Australia
and South America, of which the Thynni, Rhipicerie, &c., are examples.
FAMILY—EVANIID^. 127
GENUS—STEPHANUS.
This Genus comprises a considerable number of interesting insects, in which not only various peculiarities
of structure exist, but considerable variation occurs in some of their characters on which it has been usual,
amongst Hymeuopterous insects, to establish genera. Thus the penultimate joint of the tarsi is obliquely
dilated in a remarkable manner, with the terminal joint set on elosc to the base of the preceding; in the hind
legs the tarsi vary in the number of their joints in the opposite sexes, and this character (having been supposed to
I)e a sectional instead of a sexual one) has led to the establishment of a separate genus, Megiselms, for tlic
females of some of the species. The veins also in the discoidal part of the wing are mm-e or less 'obsolete
in some of the smaller species, and this circumstance led Mr. F. Smith to propose the formation of another
genus, Foinatopus, in the Journal of Proceedings of the Linna^an Society (Suppl. Zool. 18C0, p. 58), to which
also the MS. name of Stenophasmus was ajDphed by the same gentleman in the British Museum Collection.
If it should be thought advisable to establish genera or subgenera in this group on account of the more or
less obsolete character of these veins, a greater number of groups must be proposed, as each modification
would require separation.
S T E P H A N U S DAÌIELLICUS. (From.)
PLATE XSIV, FIG. 2.
Niger : capite et antennarum basi piceo-rufis; pedunculo abdominis pedibusque rufis ; capite anticc tritubereulato
verticeque carina parva transversa instructo, linea tenui alba ntrinque sub oculos ; antennis gracillimis,
pone medium fuscis; collari trigono-truncato, collo brevi, metanoto basi serie striolarum brevissimarum notato!
pedunculo abdomen longitudine ¡equanti, transversim lievissime striolato ; abdomine ovali nitido, oviductn
longitudine caput et corpus totum iequanti ; pedibns postieis crassis, coxis elongatis transversim carinatis femoribus
elavatis, snbtus serratis dentibusque tribns majoribus armatis; tibiis pone medium subito dilatatis; tarsis
postieis 3-articulatis (fig. .2 e) ; alis hyalinis venis distinctis nigris, stigmate nigro, basi lutescenti.
Long. corp. lin. ; oviduct, lin. 4 | ; expans. alar, antic, lin. 6| .
Habitat; Australia (Damell). In Mus. Hopeiano Osonia!.
The mandibles (fig. 2«, b, c) are robust, their inner margin (seen from above) has two obtuse teeth, seen
laterally they are more irregular. The marginal cell is slightly opened at the tip, the vein forming the hinder
margin of the incomplete second submarginai cell is abbreviated, and the second discoidal cell is incomplete,
the vein forming its hinder margin being obsolete.
OBS.—Species proxima, Slejphanus hamaiipoda Montrouzier, Ann. Soc. Agrie. Lyon. vii. 1 p. 113 Hah
Woodlark Island.
S T E P H A N U S NATALICUS. (Mas.)
PLATE XXIV, FIG. 8.
Eulvo-testaceus : capite glol.oso; autennis fuscis articulis dnobus basalibus albidis ; abdomine segmentis
mtermediis apice nigns ; femoribus postieis versus basin fosciaqne lata subapicali nigris; alis fulvescenti-hyalinis
irideseentibus stigmate luteo, venis discoidalibus obsoletis ; femoribus postieis subtus serrulatis dentibusque tribus
majoribus armatis, tarsis postieis maris quinque, fceminffi triarticulatis.
Long. corp. c? lin. 3 | , ? lin 5i ; oviduct, lin. 4 ; expans. alar, maris lin. 5, foim. lin. 6.
Habitat; Port Natal. In ]\Ius. Hopeiano Oxoniie.
^ In the figure of the male of this insect (fig. 8) the peduncle of the abdomen is represented too long relatively
to the abdomen I,)- the length of one line. The head has three small transverse tubercles between the
front of the eyes; the mandibles (fig. 8«, seen from above) are, when seen laterally, obliquely truncate at
the t.ps ; the niaxilte arc minute, with two membranaceous lobes. The maxillary palpi are very long and pendulous,
with the three terminal joints very long (fig. 8 i ) ; the labium is somewhat heart-shaped (fig. 8e) and
finely setose, with the front margin straight, and with a lobe on each side at the base, arising from an obconieal
nientam. The labial palpi are rather robust and four-jointed. The difference in the number of joints of the
i.Ki
11 If
I )