320 Prof. Westwood on Exotic Coleoptera. 



believe^ still unique in the collection of M, Guerin-Mene- 

 ville^ who in 1842 allowed me to make a careful figure of 

 it, and who considered it to be allied to Oalodromus among 

 the Breyithidce, and to Colydium. The former relation- 

 ship is due only to the very elongate and slender form of 

 the insect. The latter is its genuine afl&nity, as is proved 

 by the structure of the different parts of the mouth. 



Sp. 2. Aprostoma planifrons, n. sp. 



A. filiforme, cylindricum, nigrum, nitidum ; capite sub- 

 quadrato, supra piano, glabro, margine omni verticis acute 

 elevato; antennis apicem versus sensim sed paullo cras- 

 sioribus, et prothorace e 4a parte brevioribus ; prothorace 

 crebre punctate, linea media longitudinali impresso ; 

 elytris striis impressis punctatis notatis, linea elevata e 

 medio utriusque ad apicem extensa. Long. corp. lin. 5. 



iZa&.— River Niger, Africa. 



In Mus. Hopeiano Oxoniag. 



