12 SECOND YARKAND MISSION. 



Sub-family PIBATINJE (PIBATINA) Stal. 



36. PIEATES (LESTOMERUS) AFFINIS, Serv. 



Peiratf* affinit, Serv., Ann. Sc. nat., 23, p. 216, 2 (1831). Lestomerus affinis, A. and S.. Hist., p. 323, 

 2 (1843). 



Sab. Jhelam Valley, July 1873. 



India orientalis (Mus. Holm ); Borneo (Mus. Leiden); Cochin-China (Coll. Signoret, 

 Stal) ; Assam (CoU. Distant). 



Family HYDROBATIDrf!, Stal. 

 37. GERRIS (LIMNOTRECHUS) SAHLBERGI. Fig. 10. 



Gerris (Limnotrechus) sahlbergi, Dist., Trans. Ent. Soc. Lend., p. 125, 1879. 



Head thickly covered with olivaceous pubescence, with a small black spot on vertex. 

 Antennae ochraceous, 1st joint longest, 2nd and 3rd shortest and subequal, 4th rather longer 

 than 3rd, thickly covered with greyish pile. Pronotum ochraceous, pubescent, anterior 3rd, 

 lateral borders, and a central longitudinal line, olivaceous ; the last is testaceous on anterior 

 portion of pronotum. Hemielytra brownish testaceous, with the nervures olivaceous. Un- 

 der side of body covered with greyish pile, except lateral borders, apex, and central portion of 

 abdomen, which parts are ochraceous. Legs ochraceous, fore femora with an outer longi- 

 tudinal black fascia. 



Long. 10 mill. 



Hab. Neighbourhood of Leh. 



Dr. B/euter, who has done me the favour of examining the species, reports " L. thoracico 

 affinis et segmentorum genitalium maris structura similis, differt autem pronoio breviore, 

 postice brevius et obtusius producto, angulis dentiformibus segm. abdominnlis sexti brevissimis, 

 vix productis, tibiis, prcesertim posticis, brevibus, tarsis posticis his tantum \ brevioribus." 



38. GEN. (?) ORIENTALIS. Figs. 11 and 12. 

 Halobates (?) orientalis, Dist., Trans. Ent. Soc. Lond., p. 126, 1879. 



Brownish ochraceous, finely pilose. Antennae with the 1st joint curved, robust, and 

 about the length of head and pronotum together; remaining joints more slender, 2nd and 

 3rd subequal, 4th a little shorter than 3rd. Pronotum with a median pale longitudinal line 

 and a large rounded fovea on posterior portion of disc. The rostrum is 5-jointed; the first 

 two joints are very robust and somewhat fused together, the 2nd minute and much shorter 

 than the 1st, the 3rd much the longest and rather less robust than 1st and 2nd, 4th small, 

 slender, and black, 5th ochreous, very slender and hair-like, and rather shorter than 4th. 

 Sternum clothed with greyish pile. 



The eyes are large, semi-globular, and castaneous, situated at base of lateral margins of 

 head. The pronotum is about the length of the head, but broader, truncate in front and 

 rounded behind ; mesonotum and metanotum hardly distinguishable, much longer than pro- 



