BT A. M. LEA. 733 



genera of the family; in consequence, the triangles are not acutely 

 pointed. The hind coxae are very distinctive, being slightly 

 wider at their outer than their inner margins; the tarsi, when 

 viewed from the sides, appear to be moderately wide, but very 

 thin from above or below. In A. basalts, the fifth segment of 

 the abdomen is somewhat shorter than in the other species, but 

 its tip is somewhat produced (although much less conspicuously 

 so than in Neinatodes and IVigotiopleur^ts). The size and general 

 appearance of all the species are suggestive of Cardiophorus of 

 the Elateridcc. Type-species, A.Jiavipes. 

 Second joint of antenni^ (viewed from above) distinctly shorter 



than tliird flavipes. 



Second joint distinctly longer than third. 



Elytra entirely reddish rufipemiis. 



Elytra reddish only about base hasalis. 



Arisocephalus flavipes, n.sp. 



Black; extreme apex and base of prothorax, apex of scutellum, 

 and antennae (basal joint darker) reddish, elytra (base, suture, 

 and sides excepted) and undersurface (parts of abdomen paler) 

 of a dingy reddish-brown, legs (hind cox£e excepted) flavous. 

 Densely clothed with short, more or less upright pubescence, 

 sooty on the head and prothorax, mostly paler elsewhere. 



Head with crowded and rather small punctures; with a con- 

 spicuous median carina from near base almost to apex; antennary 

 sockets bounded by a curved carina, the same joined in front to 

 the side of the clypeal margining carina. Antennae extending 

 to about hind coxse, second joint of antennae (as viewed from 

 above) somewhat shorter than third, third distinctly shorter 

 than fourth, its apex somewhat produced to one side, fourth- 

 eighth strongly serrate (almost pectinate), ninth-tenth less 

 strongly so, eleventh distinctly longer than tenth. Prothorax 

 not much wider than long, sides rather strongly rounded in 

 fi-ont, hind angles feebly directed outwards, the carina on each 

 acute and about once and one-half the length of the scutellum; 

 with a rather feeble median line, altering at the base to a feeble 

 carina; punctures crowded and small, becoming smaller and still 

 more crowded on sides. Scutellum with moderately dense punc- 



