TERRESTRIAL FAMILIES OF IIEMIPTEKA-IIETEROPTF.RA 139 



Rostrum not quite reaching" the uiiddle of the intermediate coxae, first joint hardly 

 surpassing the base of the head. 



Pronotum anteriorly about three-quarters of the width of the head, posteriorly about 

 one and three-cjuarters times as wide as head, two and one-third times as wide as the anterior 

 breadth and twice as wide as long (head width 0.60 mm., pronotuiu, anterior width 0.45 

 mm., posterior width 1.02 mm., length 0.1 mm.), anterior collar well marked, its anterior 

 luargin very slightly sinuate, calli well marked, subconfluent centrally, posterior transverse 

 fossa central, sides but little sinuate, posterior margin widely and deeply eniarginate, posterior 

 part of disc rather feebly rugose. 



Elytra long, their length from the insertion to the level of the apex teing five times the 

 median length of the pronotum, and two and one-third times their greatest width, outer 

 margin slightly explanate centrally. Anterior coxae reaching to the middle of the meso- 

 stemum, posterior tibia (1.58 mm.) 2.66 times as long as the width of the head and eyes, 

 third tarsal joints of all legs slightly shorter than second. 



3 Left paramere as in Plate X, figs. 11, 12. 



$ (holotypc) length 3.53 mm., breadth 1.13 mm. 



5 (allotype) length 3.75 mm., breadth 1.20 mm. 



Indian Tibet. 2 S S , 4 9 $ (Iwlotype, allotype and paratypes) L 67. Dambu- 

 guru, altitude 4603 m. (15,100 ft.), on Physochlaena pracalta Hook. (Solenaceae), 31 

 July, 1932. 



In the coloration of the head and legs this species closely resembles D. orientalis Rent, 

 from Turkestan ; it may ultimately have to l)e treated as a sub.species or form of that species. 

 The posterior tibia is, however, proportionately shorter than is indicated in Renter's descrip- 

 tion (1884) of orientalis and the coloration of the antenna is comparable to that of the 

 widespread western Palaearctic species D. annulatus (Wolff.). In the latter species the black 

 spots extend throughout the intermediate and posterior tibiae at the bases of the black spines. 

 D. montanus Poppius (1912) from the Alexander Mts. is another closely allied species which, 

 however, appears to have a longer basal antennal joint ("nur wenig kiirzer als der Kopf von 

 ober gesehen") and to have a rather different color pattern on the vertex. 



These forms are all clearly closely allied and the coloration, \\hich has been chiefly used 

 in separating them, is undoubtedly variable. It is hoped that the present figures of the 

 parameres of D. physochlactiae will make it possible for other workers to decide whether the 

 present form is specifically distinct. There can meanwhile be little doubt of its Central 

 Asiatic affinities. 



11. Dicyphus sengge* sp. n. 



Head yellow, posterior margin black, centre of vertex with a large V-shaped black 

 mark which tends to become somewhat diffuse at its posterior apical end (Plate X, fig. 10). 

 Pronotum grey, with a transverse stripe across the calli black, centrally interrupted by a 

 longitudinal yellow vitta, outer margin of calli yellowish, posterior part of pronotum grey. 

 Scutellum black, basal angles dull orange, apical two-thirds of margins with broad greyish 

 yellow vittae which do not quite reach the apical angle. \^entral surface brownish. 

 Antennae with basal joint black, its apex very narrowly whitish, second joint yellow with the 

 extreme base and apical third black, third joint black, fourth joint piceous black. Ro.strum 



' Tibetan Seng-ge, a lion, tlie setose angle of the left paramere being suggestive of a mane. 



