216 ON THE GENUS CEROBATES. 



1. Cerobates sulcatus Boh. 



Schoenherr, Geu. Cured. V, p. 488, 1840. 



Distinctive characters: Teguments hardly shining ; 

 head , rostrum and pro thorax black or dull brown , elytra 

 with the base, sutural interstice and a transverse band 

 behind the middle of the same colouf or slightly paler, 

 the remaining surface ferruginous; apical joint of the an- 

 tennae distinctly longer than the preceding one, prothorax 

 not furrowed , elytra striate. — Length variable from 5 to 

 10 mill. — Not common. 



Hab. Cape of Good Hope and Port Natal. 



2. G. sulcirostris Thoms. 



Thomson, Archives entom. 11, p. 119, 1858. 



Distinctive characters: Resembles in all respects 

 C. sulcatus Boh., but the teguments are more shining, the 

 median antennal joints more elongate. Colour more or less 

 intense according to the size of the specimens which is 

 variable from 5 to 10 mill. — Common. 



Hab. Gaboon, Congo and Usambara. 



3. C. usambaricus , n. sp. 



Rufo-testaceus , nitidus , elytris testaceis, minus nitidis ^ 

 interstiiio suturali nigricante; metarostro leviter foveolato, 

 antennarum articido apicali distincte longiore quam praece- 

 dente , protliorace haud sulcato , nitidissimo , elytris dorso et 

 lateribus striatis. — Long. 7 mill. 



Hab. usambara (Plantation Derema). 



One specimen collected by Mr. L. Conradt. 



Head longer than the breadth at the base, angular 

 behind the eyes, moderately convex above, obsoletely punc- 

 tured; rostrum one half longer than the head ; metarostrum 

 foveolate, prorostrum broader at the tip. Antennae longer 

 than the head and rostrum taken together, with the 



Notes from the Leyden. IMuseum, Vol. X"VII. 



