408 GEOLOGICAL SURVEY OF THE TERRITORIES. 



ground ; the incisure dividing the lobes very deep ; humeri tumidly pro- 

 minent ; under side of the collum coarsely punctured ; the pleura min- 

 utely roughened; the acetabular caps, anterior margin of collum, and 

 posterior margin of the metapleura white. Legspiceous; the tibiae 

 usually paler, with the anterior femora stout, and armed beneath with 

 about four short spines, and along the whole length with remote, long 

 hairs. Scutellum piceous or rufo-piceous, long and very acute, remotely 

 punctured. Hemelytra pale testaceous, punctured with blackish, in 

 longitudinal series ; a large black spot occupies from the middle to the 

 tip, with a subtriangular, testaceous spot thereon near the tip; the 

 costal and posterior margins of the corium pale testaceous; disk of the 

 clavus more or less black; the membrane dusky; wings white. Ter- 

 gum black, or with piceous at base; venter black, linely sericeous 

 pubescent ; the second segment has a minute, geminate tubercle each 

 side of the middle, in both sexes. 



Length to tip of venter, o-ij millimeters. Width across the humeri, 

 1-1^ millimeters. 



Inhabits Ogden, Utah; Colorado; Canada; and Minnesota. It varies 

 greatly in the length of the hemelytra, which are either much shorter 

 or somewhat longer than the abdomen. The head is not wider than 

 long, as Dr. Herrich-Schiiffer describes his Araphe to be; but in most 

 other respects our insect seems to be near that genus. 



PlociomeruSj Amyot et Serv. 



P. diffusus^ Uhler, (Proceed. Boston Soc. Nat. Hist., 1S71, p. 0, No. 

 2.) — Collected in Colorado by the survey ; but it is quite common in the 

 Eastern United States and Canada. In Maryland and Massachusetts, 

 I have found it on low t^pots in grassj- meadows. 



Family Largidje. 



LarguSj Hahn. 



L. succinctus, Linn., (Cent. Insect. Eariorum, p. 17, No. 44.) — Brought 

 from Colorado b^^ the survey. It inhabits all the Atlantic region, from 

 New Jersey to Florida, and extends westwardly through Texas and 

 Indian Territory, as far as into Arizona. 



Family PHYTOCORiDiE. 



Mcgalocerccaj Fieb. 



1. M. debilis. New species. — Yellowish or greenish-white, polished. 

 Head imj^unctured, the middle line incised, each side with a black line 

 running from before the torulus to the base, and continued on the prono- 

 tum to its base ; eyes brown, tylus sometimes black anteriorly; antennae 

 long, the basal joint blackish, bald, sometimes paler inwardly, a little 

 stouter than the second, about as long as the pronotum ; the second 

 piceous, about as long as the head, pronotum and scutellum united; 

 the third a little paler, abruptly more slender, about two-thirds as long- 

 as the second ; fourth hardly as long as the basal joint. Sometimes the 

 antenniE are orange-yellow, excepting the first joint and base of the sec- 

 ond. Kostrum reaching to the venter, the tip piceous. Pronotum 

 irregularly, remotely, somewhat coarsely punctured, the lateral carinate 

 edge smooth, as is also the median line ; propleura roughly punctured, 

 usually having a broad, black stripe which runs back, more slenderly, 

 to the end of the venter. Mesosternum and coxoe more or less orange. 



