Entomological Society. 335 



armed on each side with a sharp spine, which is bent backwards ; 



legs four-sided, the section of which is a square ; abdomen somewhat 



heart-shaped, sharply marginate, longitudinally finely rugulose, mo.t 



strongly at the base. 



Hab. Columbia. „ , ^ -nr ^ j t? „,!,« 



This species is in the collection of J. O. Westwood, Esq., who 



kindly lent it to me for description, 



6. Cryptocerus unimaculatus, n. sp. 



Neuter. Size 3 lines. Head and thorax black, disk of the head 

 rugose, most deeply so on the vertex, the raised lateral margms fer- 

 rSous, terminating opposite the eyes, scape of the antennee and 

 thfflagelum beneath ferruginous; the thorax rugose, the anterior 

 Ingles produced into a stout spine, the posterior angles have also a 

 longer stout acute spine; the legs black; the head and thorax are 

 both sprinkled with short bright golden hairs; each node of the 

 abdomen has on each side an acute spine; abdomen ovate, emar^- 

 nate at the base, an oblong black stripe runs from the apex to the 

 middle of the abdomen ; beneath black. . ^ , , 



S. Brazil. This appears to be a rare species ; I have only seen 

 the single specimen in my own collection. 



7. Cryptocerus patellafus, n. BTp. 



Neuter. Length 2i lines. Entirely ferruginous ; the entire mar- 

 gin of the head curving upwards, forming the exact model of dish or 

 &1, which has a few large scattered punctures withm ; he posterior 

 angles of the head produced laterally and bent slightly upwards ; 

 thorax without spines, somewhat oblong-quadrate, but narrower pos- 

 teriorly • nodes of the abdomen transverse, acute at their outer angles ; 

 abdomei^ elongate, ovate, deeply emarginate at the base; legs very 



^^SlrBmzi?" Of this remarkable species I have only seen the 

 single specimen in my own possession. 



8. Cryptocerus elegans, n. sp. 



Neuter Len«-th 2\ lines. Head, antennae and legs rufo-testaceous ; 

 margins of the head broadly expanded at the sides narrowly so 

 behind, and of a pale testaceous hue ; eyes black ; mandibles rufo-tes- 

 taceous • thorax elongate, rounded iu front, its lateral angles produced 

 into spines curving backwards; the metathorax has three teeth on 

 each side- the shoulders and teeth at the sides of the thorax pale 

 testaceous'; the posterior femora testaceous and having a minute 

 tooth above ; the first node of the abdomen rounded m front, curving 

 outwardly at the sides to half its length, then abruptly curving m- 

 wards on each side, formmg a narrow footstalk to the broad portion ; 

 the second is somewhat square, having on each side anteriorly a 



