TERRESTRIAL FAMILIES OF HEMIPTERA-IIETEROPTERA 141 



June, 1932. 3 99 brachypt. L 48 Kyang La, among sparse grass and Pcgm-o/'M'/oH prob. 

 scapifoUiim Marq. and Skan., altitude 5100-5334 m. (16,800-17,500 ft.), 9 July, 1932. 



1 $ macropt., 1 9 brachypt. Ororotse Tso, altitude 5297 m. (17,381 ft.). 11 July, 1932. 



2 $ $ macropt., 3 9 2 brachypt. L 54a, north side of Marsimik La, altitude c. 5300 m. 

 (17,400 ft.), grassy place, 16 July, 1932. 1 $ macropt., 1 5 brachypt. Kyam, altitude 

 4733 m. (15,530 ft.), grassy place, 20 July, 1932. 3 5 5 , 1 9 all macropt. Nyagtzu, alti- 

 tude 4671 in. (15,324 ft.), grassy place, 30 July, 1932; 1 <5 macropt. Peldo-le, north end 

 of Tso Moriri, altitude 4529 m. (14,835 ft.), mixed vegetation with grasses dominant, 31 

 Aug., 1932. 1 9 brachypt. Tsak-shang, 31 Aug.; 1932. 



This species was described from material taken between 13,500 and 16,500 feet in 

 southern Tibet by Major R. W. G. Hingston on the Third Mount Everest Expedition. 

 According to Kiritshenko both sexes may be brachypterous ("Hemelytra — magis minusve 

 abbreviata"), while only males may be macropterous. In the present collection all the males 

 and a single female appear to be macropterous. Hingston, at his highest locality, notes that 

 the species was "common at the entrance to tunnels of mouse-hares"; in spite of much 

 observation on this point I never found the slightest trace of such an association. Since 

 short grass is the only plant, common to every locality, on the vegetation of \\hich I have 

 notes, there can be little doubt that this species is graminivorous. 



Tibetocoris gen. n. 



Elongate, cluthed abi)\-c with lung irregular sparse, ])alc pubescence, which is somewhat 

 tomentose on the head. 



Head (Plate X, figs. 14, 15, 1()) from above but little produced anteriorly, facial angle 

 subrectangular, clypeus moderately prominent, wide, very slightly depressed dorsally, slightly 

 compressed ventrally, subparallel in lateral \iew, dorsal suture indistinct, lying just above a 

 line drawn across the insertions of the antennae, bucculae moderately well developed, gula 

 distinct, rostrum reaching almost to the apex of the intermediate coxae, anterior joint short 

 and thick, but little surpassing the posterior margin of the head, vertex unimpressed, its 

 posterior margin convexly rounded centrally and feebly marginate laterally, eyes large, 

 ommatidia granuliform, interocular distance less than twice the dorsal width of an eye, in 

 lateral view eye elongate; loro-genal suture distinct; frons and anterior part of vertex feebly 

 striate on each side. First antennal joint surpassing the head by about half its length. 

 Pronotum very transverse, just over twice as wide as long, anterior border centrally emargi- 

 nate, posterior margin very widely and lightly sinuate, lateral margins straight, anterior 

 callosities poorly developed. Proxyphus flat, its margins obscurely marginate ; mesostemum 

 reaching a little beyond the apex of the anterior coxae, its posterior border emarginate 

 centrally. 



Tibiae with fine Ijlack spinous bristles; pseudarolia narrow, connate throughout its 

 entire length, reaching about to the centre of the evenly and lightly curved claw, basal tooth' 

 obtuse, aroliae very fine, bristle-like and subparallel (Plate X, fig. 17). Hamus of wing 

 cell arising opposite the base of the vena decurrcns. Gciiol\'/^c : T. margaretae sp. n. 



