148 Mr. D. Sharp on 



little from Coleoptera of other families ; that it lacks all 

 the specializations that are so remarkable in other divisions 

 of Longicorns, while but little changes would suffice to 

 make it a member of other divisions, either of Cerambycides 

 or of Prionides. 



Cephalallus, n. g. 



Caput brevissimum. 



Palpi perbreves, articulo ultimo modice dilatato. 



Oculi magni, subtus conspicui. 



Prosternum deseenduns, parum elongatum. 



I have only a single example, of the female sex, and in 

 a very mutilated state, before me ; but it represents a 

 species of so much interest that I do not hesitate to name 

 it and call attention to it. 



A slight modification of the prosternum of this insect 

 would transform it into a Criocephalus, while an elongation 

 of the head would apparently make it a Megasemum. 



The labrum is small and has a pencil of hairs near the 

 front as in Criocephalus ferus. Mandibles extremely short, 

 each with a single, strong tooth in the middle. Palpi very 

 short, the terminal joint only slightly, but still distinctly, 

 dilated at the tip. Ligula extending on each side as far 

 as the middle of first joint of labial palpus. Eyes convex, 

 extending on to the under-surface of the head, but widely 

 separated there as in Criocephalus rnsticus. 



Prosternum margined in front ; behind the margin ex- 

 tending obliquely downwards; only very slightly separating 

 the front coxa?. Metasternum elongate, terminal segment 

 of the female less elongate than in Criocephalus. Hind 

 femora hairy behind, but not densely so. 



If the genus be not maintained as distinct it will be 

 necessary to unite Megasemum and it with Criocephalus. 



Cephalallus oberthuri, sp. n. 



$ . Elongatus, angustus, convexus, piceus, elytris ferr.igineis ; 

 prothorace angusto, convexo, asperato, seulpturato, peropaco, medio 

 late leviter impresso ; elytris dense fortiter punctatis, subtiliter, 

 sex-costatis. Long. 22 mm. 



Hal. Tsekou in North Yunnan. (Coll. R Oberthur.) 

 The general form is that of a narrow Criocephalus, but 

 from all the forms of that genus it is distinguished by the 

 very dense punctuation of the elytra, which renders them 



