354 Coleopterological Notices, V. 



coxae are all very large but are mueh smaller in Amblopusa. They 

 would be allied to Sipalia if the labial palpi were three-jointed and 

 the middle acetabula sharply defined. 



I.IPAROCEPHAI.US Makl. 



Of this singular genus there are two species very closely allied 

 but undoubtedly distinct, as follows : — 



Body black throughout ; antennae shorter, barely as long as the head and 

 prothorax, the outer joints slightly wider than long ; prothorax slightly 

 transverse, moderately constricted behind, more than twice as long as the 

 elytra breTipeunis Makl. 



Body black, the head and prothorax rufo-testaceous ; antennse distinctly 

 longer than the head and prothorax, the outer joints not wider than long ; 

 prothorax strongly transverse, very strongly constricted at base and not 

 more than twice as long as the elytra cordicollis Lee. 



These differences appear to be independent of sex, the sixth ven- 

 tral being broadly lobed in the middle in the four specimens which 

 I have examined ; these specimens are from Washington State and 

 Queen Charlotte Island. 



In placing the genus Liparocephalus in the Psederini, Maklin 

 evidently had in view only the peculiar dull lustre, a characteristic 

 feature in Lithocharis and some allied genera ; the shape of the 

 head also reminds us of some paederides. 



DIAULOTA n. gen. 



Although greatly resembling Liparocephalus in general organi- 

 zation, dense granulose sculpture and large coxae, the species of 

 Diaulota can be distinguished readily by their narrow parallel body 

 with undilated abdomen, more convex eyes, shorter antennae, nar- 

 rower and more elongate head, much less constricted prothorax and 

 many other characters as given in the table. In my cabinet there 

 are representatives of two species : — 



Tibiae clothed a little more thinly with longer hair ; prothorax relatively 

 longer, less narrowed behind and much narrower than the elytra. 



densissima 

 Tibiae clothed with shorter hair ; pubescence of the upper surface shorter and 

 less conspicuous ; prothorax at its widest part fully as wide as the elytra. 



insolita 



I>. densissima n. sp. — Black throughout, the anterior parts densely 

 opaque, the abdomen dull but more alutaceous ; pubescence moderately 



