564 Mr. T. Vernon Wollaston on the 



antennas (which are inserted rather behind the middle, 

 instead of at the middle point) have their funiculus much 

 shorter, as well as more robust and compact, with the 

 second joint so greatly abbreviated that it is almost con- 

 cealed from view, and its feet are less elongate, with the 

 third articulation simple (instead of expanded and bilobed ). 

 Its capitulum, too, although not particularly abrupt, is 

 very largely developed; and its eyes, although not pro- 

 minent, are likewise large. 



78. STENOMIMUS (nov. gen.). The present group is 

 founded on a very minute, narrow, and pallid little 

 Brazilian Cossonid, several examples of which were cap- 

 tured by Mr. Fry near Rio Janeiro ; and it may perhaps 

 be looked upon as the more southern representative, in 



South America, of the preceding genus Avhich occurs 

 from, at all events, the West Indian islands to the region 

 of the Amazon. It is indeed very closely allied to Micro- 

 mimus, from which it nevertheless differs in its narrower, 

 and relatively more parallel and elongated, outline ; in its 

 surface being less shining, and (at any rate so far as the 

 elytra are concerned) minutely and sparingly sericeous ; in 

 its rostrum being longer, slenderer, and more strictly 

 parallel; in its antennas being medial as regards their 

 insertion (instead of ante-medial) ; in its eyes being more 

 rounded, and (instead of depressed) extremely prominent ; 

 in its prothorax being more triangular, and more deeply 

 constricted in front ; in the elytra being proportionately 

 rather longer and more linear, but at the same time less 

 acuminated at their extreme apex, where the pygidium is 

 but barely covered; in its tibias being more evidently 

 armed at their inner angle with a minute spinule ; and in 

 its tarsi being slenderer. 



79. MICROMIMUS (nov. gen.). The two minute and 

 rather closely allied species for which the present genus is 

 proposed, are from the collection of Mr. Fry. One of 

 them is West-Indian, having been taken in Trinidad ; and 

 the other was captured, apparently by Mr. Bates, in the 

 region of the Amazon. They are remarkable for their 

 pallid hue, and shining, deeply sculptured, somewhat 

 depressed surfaces ; for their rostrum being short, broad, 

 and nearly parallel (it being but very slightly narrowed 

 posteriorly) ; for their eyes being transverse and ex- 

 tremely large, but nevertheless completely sunken or 



