HYMENOBOSMINA. 439 



distinct and entire. Scutellum not strongly convex, slightly 

 longer tluin broad, with its apex obtuse and usually distinctly 

 margined. Basal abdominal segment slender, elongate and 

 (•annate beneath, with its spiracles behind the centre ; terebra 

 shortly exserted. Tarsal claws with stout and stiff bristles. 

 Wings with no areolet. 



Range. India, Ceylon. 



in both the tyjncal species of this genus, and in the type of 

 11. pilosella the metathoracic spiracles are elongate. 



Cameron says (loc. ciV.)that this genus "comes near to Charops, 

 with which it agrees in wanting the areolet, but that genus 

 may be known from it by the eyes being deeply emarginate, the 

 scutellum depressed and the antennae scarcely half the length of 

 the body. Apart from the absence of the areolet it comes near to 

 Campople.v, \\hich may be known from it by the much larger and 

 more elongated spiracles. The spiracles are more oval than in 

 Limneria, and the median segment [n)etathorax] has the arete 

 more numerous and more distinct." It is very closely allied to 

 Charo'ps, but the head is much broader posteriorly. 



The above description he supplements in 1903 (Zeits. Hym.- 

 Dipt. iii, p. 338) by a more detailed account of the venation, ifec. : — 

 Face and the apically rounded clypeus deplanate ; clieeks as long 

 as the scape; postpetiole very distinct from the petiole; basal 

 nervure continuous through the median; hind wings with the 

 apical nervures entirely wanting and with but two entire cells, a 

 longer superior one extending to a little beyond the centre of the 

 wing, and a shorter inferior one less than half the length of the 

 upper. 



Table of Sj^ecies. 



1 (4) Frons centrally caviiiate ; scape entirely 



red. 



2 (3) Flagellum entirely black ; legs without 



black markiuo,s spiiujies. Cam., p. 4-39. 



.'3 (2) Flagellum basally pale : hind legs with 



black markings trichujiti/xs, Cam., 



4 (1) Frcns not carinate ; scape tiav ideas only [p. 440. 



beneath. 

 •'> (6) Areola not basally acuminate ; liind 



femora black . . /. p/fosc/hi, Cam., p. 441 . 



(i (5) Areola basally acuminate ; hind femora 



testaceous mamUbularis, Cam., 



[p. 442. 



328. Hymenobosmina spinipes. Cam. 



Bosmina spinipps, Cameron,* INIanch. Mem. 1899, p. 121, pi. iii. 

 tig. 13($). 



2 . Head : face, clypeus and external orbits with dense silvery 

 ])ubes(;ence ; palpi, and ba.se of mandibles broadly, stramineous; 

 vertex closely, the frons more strongly, ])unctate and centrally 

 carinate. Antenmi' black, with the pubescence long and pale on 

 the red scape, short and black on the tlagelluin. Thorax immacu- 

 ate ; mesonotum closely punctate, with dense black pilosity ; 



