Famity—PROCTOTRUPID&. Sus-Famity—BETHYLLIDES. 165 
Species 6—PRISTOCERA FULVICOLLIS. 
Puate XXJ} Fie. 3. 
Nigra, sublevis: antennis, prothorace cum collare, abdomineque fulvo-testaceis, pedibus luteis, alarum 
venis stigmateque fuscis ; capite nitido laviter punctato ; mandibulis luteis, dente magno apicali alterisque parvis 
obtusis internis (fig. 3a); thorace supra fere levi, medio metanoti tantum ruguloso, subplano, carina media 
longitudinali, pedunculo abdominis brevi nigricanti. 
Long. corp. lin, 3; expans. alar. antic. lin. 4. 
Habitat ; Amazonia (Bates). In Mus. Hopeiano Oxonie. 
The 6-jointed maxillary palpi are moderately elongate, the second joint is not much shorter than the third. 
The mentum is subquadrate, 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 
tip and furnished with several bristles; but it is most probable that the terminal joint has been broken off. 
The infero-discoidal cell has the veins on three sides distinct, the oblique apical one being very slender, 
Spectres 7—PRISTOCERA RUFICAUDATA. 
PuatE XXIX, Fie. 4. 
Nigra: capite et thorace rude punctatis; metanoto spatio magno triangulari medio, ad basin serie striaram 
brevium 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-fuscis, cellula infero-discoidali completa. 
Long. corp. lin. 5; expans. alar. antic. lin. 6, 
Habitat; Natalia. In Mus. Britann. 
The antennx are moderately robust, and not quite so long as the entire thorax. The mandibles are obliquely 
truncate at the tip, with one strong apical and four smaller teeth; the maxillary palpi are comparatively short, 
with 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 antenne. 
Species 8—PRISTOCERA BURCHELLANA. 
Prats XXX, Fic. 8. 
Magna, nigra, nitida, parce punctata: abdomine testaceo ; capite thorace angustiori, ocellis magnis; anten- 
nis thorace vix longioribus, articulo secundo minuto; thorace elongato-ovali; collaris, lateribus apiceque griseo- 
setosis; collari brevi, lateribus postice dilatatis ; metanoto postice convexo, dorso impressione media longitudinali 
angusta, in qua linea elevata nitida; abdomine depresso, elongato-ovali, pedunculo brevissimo nigro; pedibus 
piceo-nigris ; alis fuscescentibus, hyalinis, nubila obscuriori pone medium, venis fuscis, discoidalibus magis 
fulvescentibus, cellula infero-discoidali distincta. 
Long. corp. lin, 5-6 ; expans. alar. antic. lin. 73-104. 
Habitat ; Brasilia. Plura individua Dom. Burchellio capta ineunte mense Novembris ann. 1828, apud 
Canga, et Corrego Raiz, nocte volitantia. In Mus. Hopeiano Oxoniz. 
The mandibles of this species are dilated beyond the middle, and terminated by one large apical and several 
smaller conical teeth (fig. 8a); the maxillary palpi are long, and consist of six nearly equal-sized joints (fig. 84) ; 
the mentum is narrowly ovate, with the anterior angles laterally and conically produced, the labial palpi con- 
sisting 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. 
