Genera and Species of Coleoptora. 355 



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

 f(.)riner scarcely broader than the latter ; terminal joint of thci palpi 

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

 rate, slif?htly toothed at th(i side. Elytra subdepressed, wider than the 

 prothorax, the sides {zradually rounded to the apex. Legs rather short, 

 anterior cotyloid cavity slightly angulated externally, femora subcla- 

 vate; tibiae straight; tarsi narrow, the basal joint of the posterior aa 

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

 Prosterumn simple, mesostenium keeled. 



The toothed claws, combined vdi\i the keeled mesosternum, will 

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

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

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

 generic with -^.^a^icZ^a (Dej.). 



Sternacanthus [Cerambycidae]. 

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



Sternacanthus Batem. 



S. ater, nitidus ; elytris fasciis siibintegris tribus 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. 



Stenygra [Cerambycidae]. 

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



Stenygra contracta. 



S. fusca, nitida; prothorace ampliato, longitudinaliter plicate; 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 triangidar, with a greyish-white pile ; 

 elytra elongate, narrowed in the middle, prominent at the shoidders, 



