330 MEMOIRS ON THE COLEOPTERA 



ently never have a trace of black sutural ornamentation ; the latter 

 species is isolated because of the pallid vestiture, this being invari- 

 ably black or infuscate in all the others. 



The following is allied to suturalis but is stouter in form : 



Batyleoma fontinalis n. sp. Form nearly as in suturalis but a little 

 stouter, similarly punctate and with erect black hairs, except that the 

 elytral punctures gradually become sensibly closer as well as smaller 

 apically; color pale yellowish-red throughout above, only the scutellum 

 black, the sutural beading of the elytra infuscate; antennae wholly black; 

 under surface red, all the sterna of the hind body and the anterior coxae 

 and contiguous surface of the prosternum black; femora red, blackish 

 at tip, the posterior almost in apical half; tibiae wholly black on the 

 posterior to red tipped with blackish on the anterior; tarsi black, piceous 

 distally. Length (9) 8.0 mm.; width 2.4 mm. New Mexico (Las 

 Vegas). 



The steep front before the line of the antennae is even more 

 sharply and deeply, transversely concave than in suturalis. 



The prosternal sexual characters of the male are not quite so pro- 

 nounced as in Batyle and do not involve a difference of coloration ; in 

 some forms such as suturalis, the male prosternum has an indefinite 

 ante-coxal area more coarsely but not very densely punctate; in 

 cylindrella this area becomes larger, more sharply limited and more 

 densely sculptured. 



Stenobatyle n. gen. 



Body very elongate, generally black, with red prothorax; head 

 small, the front concavely declivous; eyes moderately separated; 

 antennae very slender, approximately equal in length to the body ( cf ) , 

 the third joint very much longer than the fourth; prothorax variable 

 in sculpture, without erect hairs; scutellum subequilateral but very 

 acute at apex; elytra a little wider than the prothorax, strongly 

 punctured, the ridge at about inner third; anterior coxse separated; 

 mesosternum slightly swollen, convex, declivous anteriorly, more 

 prominent than the metasternum; legs long and slender; hind tarsi 

 very long. 



It will be noted that these characters agree tolerably well with 

 Entomosterna, as limited above, but the antennae differ in the rela- 

 tively short fourth joint and the elytral ridge is not ivory-like. The 

 two species known to me may be thus described : 



*Stenobatyle prolixa Bates Deep black, subalutaceous, the prothorax 



