HEMIPTERA— HETEEOPTEEA— COREID^. 415 



regularly tapering; the surface black or blackish fuscous and fineh' granu- 

 late, a row of granules marking the limitations of the two lobes. Scutellum 

 finely granulate, black. Hemelytra fusco-fuliginous, the membrane fainter; 

 the corium long, reaching almost to the extremity of the abdomen ; the 

 sutura clavi marked by a pallid line ; the surface of the whole more or less 

 finely punctate. 



Length of body, 8°"" ; breadth of thorax, 3°"". 



Florissant. One specimen, No. 6371. 



2. Phthinocoris lethargicus. 

 PI. 26, Fig. 17 ; PI. 27, Fig. 17. 



Head blackish fuscous, nearly smooth, but with fine transverse corru- 

 gations ; the antennae of the same color. Thorax reddish fuscous except 

 along the posterior margin, which with the whole scutellum and the base of 

 the hemelytra beside it is blackish, forming a broad, transverse belt across 

 the body ; the sides of the thorax full, ampliated, the thorax tapering much 

 more rapidly in the anterior than in the posterior half, the sepai-ation of the 

 anterior and posterior lobes marked by a fine row of granules ; the surface 

 otherwise nearly smooth but faintly and coarsely granulose. Scutellum 

 finely corrugate. Hemelytra pale fusco-fuliginous, the membrane nearly 

 pallid, the veins all marked with fuscous in series of punctures upon either 

 side ; corium rather shorter than in the preceding species. 



Length of body, 8.65"'° ; breadth of thorax, 2.5°"° ; abdomen, 3.5°"° ; 

 length of antennae, 3.5"". 



Florissant. Three specimens, Nos. 6370, 8740, 9532. 



3. Phthinocoris langdidus. 

 PI. 27, Fig. 6. 



The smallest of the species. Head rounded, of about equal length and 

 breadth, the eyes only moderately large, globular, the surface of the head 

 finely granulate. Antennae slender but short, not half the length of the 

 body, black like the head ; indeed the whole body is black. Thorax just 

 about as long as the head, more coarsely granulate than it, more than twice 

 as broad as long, the sides tapering but regularly rounded. Corium of 



