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164 OEDEE—IIYMENOPTERA.
SPECIES 3—PRTSTOCEEA COLUMBANA.
PLATE XXIS, FIH. 5.
Nig-ra, nitida, lievissima: capite rotiuidato minute pimctato, clyiieo prominiilo, emarginato; raamlibulis
iilbidis, dent ibus tribus apicalibus alteroque mag-no interno (fig. S a ) ; antennis gracilibns fere longitudine tlioracis
et abdominis, artienlis 13, secundo minuto, reliquis, ad apicem sensim attcnuatis, intus setosis ; coUari brevi
semieireulari ; metanoto transverse quadrato, in medio longitudinaliter suleato, striolisque basalibus abbreviatis,
i n t e r n i s magis obliquis, lateribus metanoti longitudinaUter striatis ; abdomine oblougo-ovato, segmentorum marginibus
pieeis ; pedibus nigris, tibiis apice tarsisque piceo-rnfis ; alis fuseeseentibus, venis stigmateque fuseis,
cellula infero-discoidali completa.
Long. corp. lin. 4 ; expans. alar, antic, lin. 6.
H a b i t a t ; Columbia (D. Gaudiehaud). In 5Ius. W. W. Saunders.
The wings are slightly longer than the antennie, which are nearly as long as the thorax and abdomen. The
maxillary palpi are moderately long, the two basal joint s short, the third longer and oblique at its extremity ;
t h e mentum is cup-shaped, and the labial palpi are three-jointed, the last joint thickened at the tip (fig. 5 b).
SPECIES 4~PEIST0CEKA CEASSICOENIS.
PLATE XXIX, FIG. 6.
N i g r a , punctata ; abdomine nitidissimo la;vissime punctato ; cl^ieo porreeto apice subbifido ; niandibulis
irregularitei- dentatis, dentibus duobus apiealibus validis et interno crasso, brevi, truncato (fig. 6 b) -, antenni s
brevibus, articulis intermediis crassioribus, apicalibus sensim attenuatis (fig. 6 a) • collare semi-ovato ; metanoto
spatio semi-ovali longitudinaliter striolato notato, postiee in eanalem abbreviatum dorsalem ad apicem metanoti
extensum desinente; lateribus metanoti oblique striolatis ; alis fuseo-hyalinis venis stigmateque nigris; cellula
postero-discoidali vix distincte formata; collaris, segmentorum abdominalium niarginibus postieis, tegulisque
pieeis ; pedibns nigris, geniculis, tibiarum apieibus, tarsisque pieeo-rufis.
Long. corp. lin. 4 ; expans. alar, autie. lin. 6.
H a b i t a t ; Amazonia (Bates). In Mus, Hopeiano Oxonise et W. W. Saunders.
The maxillarj- palpi are C-jointcd, the three basal joint s short, the third but sUghtly larger than the sceond ;
t h e three terminal joints are more elongated and slender, nearly equal ; the mentum is narrow at the base,
dilated at the anterior extremity ; the labial palpi 3-jointed, with the joints equal.
SPECIES 5—PEISTOCEEA DEEWSENII.
PLATE XXXI, FIG. 7.
N i g r a : capite rotundato varioloso-punctato ; clypeo in medio in spinam parvam producto ; antennis gracilibus,
fihformibus, articulo primo longiori, secundo parvo, reliquis fere a;qualibus, ad apicem sensim paullo attenuatis
(fig. 7 h) ; mandibulis dentibus 4 apicalibus, dente externo et interno majoribiis acutis conicis (fig. 7 a) ;
maxillis lobis duobus membranaceis, palpis 6-articulatis, tribus basalibus crassioribus et sensim longioribus, tribus
u l t i m i s graeilioribus subicqualibus ; mento angulis anticis lateraliter pon-ectis, margine antico valde setoso, palpis
3 - a r t i c u l a t i s , articulis basi graeilibus, subtequalibus ; collare trigono, punctato, margine postico laivi; mesotlioracis
dorso postiee rotundato, spatio trigono basali areolato, in medio subcanalieulato, earinam tenuem mediam
ineludente ; abdomine depresso, nitidissimo ; pedibus nigris ; trochaiiteribus albis ; ahs pallide lutescenti-hyalinis,
venis graeilibus stigmateque nigris. (Mas.)
Long. eorp. lin. 5 ; expans. alar, antic, lin. 7.
H a b i t a t ; Ceylon. In Mus. Hopeiano Oxonias. Mecum benevole communicavit Dom. Drewsen, Hymcncpterologus
Danicus peritissimus et nomine ejus inscripta.
FAMILY—PROCTOTRUPID^. SUB-FAUILY—BETIIYLLIDES. 165
SPECIES 6—PEISTOCEEA FULVICOLLIS.
PLATE XXI, FIG. 3.
N i g r a , sublajvis : antennis, prothoraee cum collare, abdomineque fulvo-testaceis, pedibus luteis, alarum
venis stigmateque fuscis ; capi t e nitido lajviter punctato; mandibulis luteis, dente mag-no apicali alterisque parvis
obtusis internis (fig. 3 a ) ; thoraee supra fere la;vi, medio metanoti tantum ruguloso, subplano, carina media
longitudinali, pedunculo abdominis brevi nigricanti.
Long. corp. lin. 8 ; expans. alar, antic, lin. 4.
H a b i t a t ; Amazonia (Bates). In Mus. Hopeiano Oxonice.
The 6-jointed maxillary palpi are moderately elongate, the second joint is not much shorter than the third.
The menfaim is subqiiadrate, with the anterior lateral angles prominent ; the labial palpi appear to consist of a
very minute basal joint, and two others of nearly equal length, the outer one being gradually thickened at the
t i p and furnished "with several bristles; but it is most probable that the terminal joint has been broken ofl'.
The infero-discoidal cell has the veins on three sides distinct, the oblique apical one being very slender.
SPECIES 7—PEISTOCEEA HUFICAUDATA.
PLATE XXIX, FIG. 4.
N i g r a ; capite et thoraee rude piinctatis ; metanoto spatio magno triangulari medio, ad basin serie striarum
b r e v i um impresso, striolisque radiantibus oblique notato, lateribus metanoti transversim striolatis ; abdomine
subdepresso ; antennis, tegulis, dimidio apicali abdominis, tibiis, tarsisque piceo-rufis ; alis pallide fusco-hyalinis,
venis stigmateque rufo-fiiscis, cellula infero-discoidali completa.
Long. corp. lin. 5 ; expans. alar, antie. lin. 6.
H a b i t a t ; Natalia. In Mus. Britann.
The antemiEe are moderately robust, and not quite so long as the entire thorax. The mandibles are obliquely
t r u n c a t e at the tip, with one strong apical and four smdler teeth ; the maxillary palpi are comparatively short,
w i t h the four terminal joints of equal length, the mentum is ovate, with the lateral anterior angles prominent,
and the labial palpi composed of three equal-sized joints. The clypeus has a small central longitudinal carina
between the base of the antennaí.
SPECIES 8—PEISTOCEEA BUECHELLANA.
PLATE XXX, FIG. 8.
Magna, nigra, nitida, parce punctata : abdomine testaceo ; capite thoraee angustiori, ocellis magni s ; antennis
thoraee vix longioribus, articulo secundo minuto ; thoraee elongato-ovali ; collaris, lateribus apiccque griseosetosis;
collari brevi, lateribus postica dilatatis; metanoto postico convexo, dorso impressione media longitudinali
angusta, in qua linea elevata nitida ; abdomine depresso, elongato-ovali, pedunculo brevissimo nigro ; pedibus
piceo-nigris ; alis fuseeseentibus, hyalinis, niibila obscuriori pone medium, venis fuscis, discoidalibus magis
falvescentibus, cellula infero-discoidali distincta.
Long. corp. lin, 5 - 6 ; expans. alar, antic, lin. 7^-10^.
H a b i t a t ; Brasilia. Plura individua Dom. Burchellio capta ineunte mense Novcmbris ann. 1828, apud
Canga, et Corrego Eaiz, nocte volitantia. In Mus. Hopeiano Oxoniaj.
The mandibles of this species arc dilated beyond the middle, and terminated by one large apical and several
smaller conical teeth (fig. S a) ; the maxillary palpi are long, and consist of six nearly equal-sized joint s (fig. 8 b) ;
t h e mentum is narrowly ovate, with the anterior angles laterally and conically produced, the labial palpi cons
i s t i n g of three equal-sized joints. The ungues of the tarsi are acute at the tip, with a strong tooth in the
middle of the inner edge.
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