196 NEW GENERA AND SPECIES 



attenuated towards the apex, black, with the whole of the apical, 



and the lower half of the penultimate segments, rufo-testaceous : 



legs fuscous : antennse and palpi entirely black, the former fine, 



and longer than in any other species of the genus. (Long. corp. 



lllin.) 



Taken at Weston, always in company with D.fuscatus. 



Sp. 3. Cen. rainuta. 



Black, mouth testaceous : thorax short, convex : elytra longer than 

 the thorax : abdomen broad and short, deeply margined, with the 

 penultimate segment edged with white, and the last fuscous ; legs 

 piceous : palpi and antennae black, with the basal joint testaceous. 

 (Long. Corp. | lin.) 



I have considerable doubt whether the insects of this small 

 species are any thing more than very minute specimens of C. 

 Cotmroides, with which they are generally found ; but if this 

 is the case, it is very remarkable that no intermediate size 

 should occur. They differ principally in having the thorax 

 narrower, and the abdomen broader in proportion. 



B. With the thorax not broader than the abdomen, the latter very 

 much elongated and obtuse. 



Sp. 4. Cen. elongata. 



Narrow, elongate, fuscous black, clothed with a griseous pubescence : 

 mouth testaceous : thorax nearly quadrate, fuscous, with the mar- 

 gins lighter : elytra not broader than the thorax, very deeply 

 notched at the posterior angles, fuscous, becoming paler pos- 

 teriorly : abdomen nearly four times as long as the elytra, strongly 

 margined and scarcely attenuated, the penultimate segment deli- 

 cately edged with white: legs long, rufo -piceous : antennae 

 fuscous, with the basal and three apical joints testaceous : palpi 

 testaceous, with the terminal joint dusky. (Long, corp. 1| lin.) 



Taken at Weston ; end of May and June, 1836-7. 



Sp. 5. Cen. brevicornis. 



Elongate, rufous, head darker than the thorax : elytra short, trans- 

 verse, obliquely truncate towards the suture : abdomen nearly four 

 times as long as the elytra, very little attenuated, with the apex 

 obtuse, dusky, with the posterior edge of each segment lighter : 

 legs and palpi pale : antennae short, dusky, with the basal and 

 apical joint testaceous. (Long. corp. 1| lin.) 



Taken at Weston ;*July, 1837. 



