﻿TABANIDAE. — PART II. 337 



a transverse ridge of black hair in front of bases of middle coxae). Abdomen : 

 hind borders of all tergites in c? , and of all except first in Q , isabella-coloured 

 pollinose, more dusky in <$ than in Q ; hind border of second tergite in <$ 

 produced in middle line into a narrow, forwardly directed triangle, which scarcely 

 extends beyond middle of segment ; a similar expansion sometimes visible, 

 though less distinctly, on second tergite of Q also ; a pair of rounded, yellowish- 

 isabella-coloured spots more or less indistinctly visible on each tergite (or on 

 each except first) in Q ; in tf , so far as can be judged from the single specimen 

 available, corresponding spots are less developed, and are confined to a mere vestige 

 (only visible when abdomen is viewed from behind at a low angle) on sixth 

 tergite ; venter in $ slate-grey in front, greyish clove-brown posteriorly, hind 

 margins of second and following scutes isabella-coloured ; dorsal and ventral 

 surfaces of abdomen in $ clothed with black hair, with which on ventral scutes 

 of third to sixth segments inclusive some yellowish hairs are intermingled ; 

 ventral surface in Q greyish-drab (terminal scute with a dark brown patch in 

 centre), clothed, except on last segment, with glistening, appressed, ochre-yellow 

 hairs, with which on penultimate segment some more erect brownish hairs are 

 intermingled ; dorsum in Q clothed with minute, appressed, black 'or blackish 

 hairs (lateral margins of first six dorsal scutes often clothed, at least in part, with 

 glistening ochre-yellow or yellowish hairs). Wings : usual three rosettes, pale 

 mark in marginal cell at distal extremity of stigma, and sinuous mark or 

 transverse streak just before apex of wing (starting from costa at distal extremity 

 of first submarginal cell) generally well developed ; stigma dark brown, well 

 developed and conspicuous, its proximal extremity pale ; discal cell with two pale 

 transverse marks (portions of proximal and median rosettes), and with its 

 proximal angle also pale ; distal marginal angles of second, third, and fifth 

 posterior cells pale ; zig-zag pale mark running across proximal extremity of 

 distal third of anal and axillary cells usually well developed and conspicuous ; 

 veins or portions of veins surrounded by the three rosettes more or less distinctly 

 infuscated. Squamae sepia-coloured. Halter es cream-bufF. Legs : middle and 

 hind coxae and anterior surface of base of front coxae in $ grey, remainder of 

 front coxae in $ clove brown ; coxae in S clothed with black or blackish hair, 

 except on anterior surface of base of front pair, where hair is greyish or 

 yellowish ; coxae in Q grey and clothed with yellowish hair, except distal two- 

 thirds of front pair, which are dark brown and clothed with similarly-coloured or 

 blackish hair ; femora in $ and also middle and hind tibiae and tarsi clove-brown, 

 front tibiae and tarsi in c? black, front tibiae in $ with a cream-buff band, 

 clothed with appressed, glistening, cream-coloured hairs, close to base, middle 

 and hind tibiae in c? each with two cream-bufF or buff-coloured bands, the distal 

 band being narrower than that near the base, and in the case of the hind tibiae 

 (at least in the typical specimen) indistinct and inconspicuous ; middle and hind 

 tarsi of S clove-brown, proximal two-thirds of first joint of middle pair, and 

 rather more than proximal half of first joint of hind pair cream-buff; hind tibiae 

 in c? fringed with black hair on inner and outer sides, the hair composing the 

 fringe on the outer side being coarser and more uniform in length than that on 

 the inside ; femora in Q clove-brown, and clothed for most part with similarly 

 coloured hair, proximal two-thirds of middle pair (at least on posterior surface) 



