Genera and Species of Coleoptera. 355 



in size. Eyes large, deeply einarginate. Epistome and lip short, the 

 former scarcely broader than the latter; terminal joint of the palpi 

 ovate, pointed. Mandibles entire at the apex. Prothorax subquad- 

 rate, slightly toothed at the side. Elytra subdepressed, wider than the 

 prothorax, the sides gradually rounded to the apex. Legs rather short, 

 anterior cotyloid cavity slightly angulated externally, femora subcla- 

 vate; tibise straight; tarsi narrow, the basal joint of the posterior as 

 long as the rest together, the claw-joint short, claws strongly toothed. 

 Prostemiun simple, mesosternum keeled. 



The toothed claws, combined with the keeled mesosternum, will 

 distinguish this genus from Hebestola, which appears to me to be its 

 nearest ally. Eumathes undatus, published by me in the Entomolo- 

 gical Society's ' Transactions,' 2 ser. iv. p. 251, I believe to be con- 

 generic with E. jaspidea (Dej.). 



Sternacanthtts [Cerambycidoe]. 

 Serville, Ann. de Soc. Ent. de Er. i. p. 172. 



Sternacanthus Batesii. 

 S. ater, nitidus ; elytris fasciis subintegris tribns rubris. 

 Hub. Para. 



This insect has long stood in my cabinet as S. undatus, 01. Mr. 

 Bates, however, has recently called my attention to the differences be- 

 tween the two ; and since that I have seen two specimens of the true 

 undatus in the extensive collection of Wm, Jeakes, Esq., and which 

 were formerly in the possession of the Marquis de la Ferte. In the 

 true undatus the bands have precisely the undulating character re- 

 presented in Olivier's figure, and are very different from the nearly 

 straight, although slightly toothed bands of the Batesii ; the habit 

 is also different ; and were the two insects compared, other characters 

 would doubtless be found to distinguish them. 



Stent gr a [Cerambycidse]. 

 Serville, Ann. de Soc. Ent. de Fr. iii. p. 95. 



Stenygra contractu. 



S. fusca, nitida; prothorace ampliato, longitudinaliter plicato; elytris 

 medio coarctatis. 



Hab. Amazons (Napo). 



Dark glossy brown, very sparingly furnished with long pale-yellowish 

 hairs; head moderately elongate, roughly punctured; prothorax sub- 

 globose, broader than the elytra, marked longitudinally with numerous 

 fine lines or plaits ; scutellum triangular, with a greyish-white pile ; 

 elytra elongate, narrowed in the middle, prominent at the shoulders. 



