254< Mr. II. W. Bates on Ceranthycidcv 



closed extei-ioi'ly. The closure is not produced by the 

 elongation of the outer branch of the mesosternuui to 

 meet the corresponding part of the metasternura, but by 

 a small prominence or tubercle at the anterior edge of 

 the latter. The form of body is more cylindrical, and the 

 derm more naked than in Cn'odion, and there is a sti-ik- 

 ing difference in the antenniferous tubercles, which are 

 contiguous to each other, and form, in fact, a short trans- 

 verse bicuspid ridge between the roots of the antennco. 

 The intermediate tibias have a spine externally at their 

 apices, which character distinguishes the genus from 

 Xestia, where the tibiae are unarmed. 



I believe Cer. setosus, of Germar, belongs to this 

 genus. 



1. SphaUenum puncticolle, n. sp. 



Elongatum, subcylindricum, nigro-fuscum, sparse seto- 

 sum, autennis thorace scutello lateribusque pectoris 

 fulvo-grisoo-tomentosis ; thorace puuctis magnis discretis 

 im])resso ; elytris castaneis, subtiliier punctulatis, apice 

 utrinque bispinosis, femoribus medio rufo- castaneis. 



Long. 1 uu. 2 liu. — 1 un. 8 lin. $ $ . 



Differs from the following species in the separated 

 punctures of the thorax, and in the dense and fine to- 

 mentose clothing of the same member. I should have 

 taken it to be the CrioJion castanopterwn of Erichson, if 

 there had been any allusion in that author's descnption 

 to the tomentose thorax. It is also allied to Sph. setosus, 

 of Germar ; but differs in wanting the erect yellow hairs 

 on the elytra, mentioned in that author's description, 

 and in the red femora. The elytra have only very 

 minute, almost microscopic bristles in the punctures. 



Hob. — Upper and Lower Amazons ; generally found 

 in repose on the leaves of trees in the forest. 



2. SphaUenum femoi'ale, n. sp. 



Criodion castanopteruui, Erichson, in Schomburgk's 

 Reise, iii. 572 (?). 



Elongatum, subcylindricum, nigro-fuscum, sparse seto- 

 sum, antonnis scutello lateribusque pectoris fulvo-griseo- 



