HEMIPTEBA HETEBOPTERA COREIDJB. 425 



posteriorly, being as broad at the base as the apex of the thorax ; antennae 

 distinctly shorter than the body, the first joint nearly as long as the head, 

 and scarcely, if at all, shorter than the second or third joint, the fourth joint 

 gently incrassated, but scarcely broader than the others and slightly the 

 longest. Thorax trapezoidal, scarcely longer than broad, gently narrowing 

 from base to apex, the apex being five-sixths the length of the base; surface 

 coarsely granulate, especially posteriorly. Hemelytra faintly punctate in 

 linear series. Legs long and very slender. 



Length, 8.2f)""" ; breadth of base of thorax, 1.5"""; length of hind 

 femora, 3 5 mm . 



Florissant. One specimen, No. 10391. 



5. TENOR gen. nov. (reivw}. 



Body robust ; head subrotund, of about equal length and breadth, the- 

 eyes centrally situated, small, globular, the front between them broadly 

 rounded but much advanced, behind the eyes constricted. Thorax several 

 times broader than long, not more than half as long as the head, strongly 

 tapering, the apex as broad as the intraocular part of the head. Abdomen 

 tolerably full. Hind femora remarkably slender, scarcely longer than the 

 width of the body. 



A single species is known. 



TENOR SPELUNC.E. 



Head uniform and coarsely punctate. Thorax similar but even more 

 coarse, uniform throughout; behind the prothorax the body is nearly twice 

 as broad as the head; whole body blackish fuscous ; the legs testaceous. 

 Unfortunately the antenna: are not present, and the hemelytra are too 

 obscure to say more than that thecorium and clavus are rather finely punc- 

 tate linearly. 



Length of body, 7"" n ; breadth of head, 1.5 mm ; base of thorax, "2.6""" : 

 abdomen, '2.8"". 



Florissant. One specimen, No. 10227. 



!. KTIROCORIS gen. nov. (re/pa, 



Head narrow, long, and slender, the front between the antenn.T greatly 

 prolonged, so as to reach beyond the apex of the first antenna! joint: the 

 antenna; form the most remarkable feature ; the first joint is moderately 



