338 APPENDIX. — NOTONECTIDiE. 



Genus HELOTREPHES. 



Helotrephes, Stdl, Freq. Eiiq. Resa, Ins. Hem. p. 267 (1859) : Kirh. 

 Wien. ent. Zeit. xxiii, p. 129 (1904). 



Type, H. semiglobosus, St§,l, from China. 



Distribution. Oriental and Malayan Eegions ; China ; Madagascar. 



" Body short, obovate, strongly convexly raised, subhemi- 

 spherical, snbcompressed, more highly raised anteriorly than pos- 

 teriorly ; head triangular, large, moderately convex, perpendicular, 

 not clearly distinguishable from the thorax ; eyes of moderate size : 

 rostrum short, free, triarticulate, basal joint covered, second 

 thickened, scarcely longer than broad, last joint nearly twice as 

 long as the preceding ; thorax transverse, posterior margin on each 

 side suboblique; scutellum large, a third shorter than tegmina, 

 suboblongly triangular, nearly half the width of base of body ; 

 tegmina cartilaginous, clavus absent ; legs simple, tarsi with two 

 claws, posterior nearly twice longer than anterior. 



"Allied to Plea, body broader, much more raised, scutellum 

 larger, clavus absent, eyes smaller.'' (Stfil.) 



3113. Helotrephes indicus, sp. n. 



Head ochraceous, distinctly punctate, strongly deflected, vertex 

 about three times as broad between eyes as medial length ; 

 pronotum about one-third broader at base than long, sparingly 

 coarsely punctate, more or less olivaceous brown, the anterior area 



Fig. 199. — Helotrephes iitdicus. 



ochraceous with its posterior margin irregularly defined ; scutellum 

 brownish olivaceous, its basal margin distinctly paler, coarsely 

 darkly punctate ; corium dull ochraceous ; coarsely darkly punctate ; 

 sternum and legs ochraceous ; abdomen beneath blacJv with the 

 lateral margins ochraceous. 



Length 14 millim. 



Hab. Calcutta. Burma ; Eangoon (Annandale). 



Found at Calcutta in tanks in company \^•ith Plea pallescens, but 

 much scarcer. 



