iQio.] E. Brunetti : Blood-sucking Muscidce. 93 



Thorax. Varies from dark ash-grey (sometimes with a bluish 

 tinge), to distinctly yellowish grey. Normally, the markings 

 of the dorsum appear as four stripes, the inner pair barely inter- 

 rupted at the suture but slightly widened behind it ; the outer 

 pair less regular, distinctly interrupted at the suture ; in front of 

 which the direction is changed, ])ointing to, and nearly reaching, 

 the shoulders; and behind which, the stripes, seen from behind, 

 appear widened near the bases of the wings ; thence narrowing 

 and disappearing before attaining the posterior border of the 

 dorsum. Scutellum and sides of thorax concolorous. 



Chsetotaxy as in Philcematomyia insignis, Aust. The whole 

 surface of the dorsum is covered with minute bristles. Of the dorso- 

 central rows of bristles, the intermediate smaller ones are larger in 

 size than in that species, but 5 or 6 macrochaetae are usually evident 

 behind the suture and 2 (with a lesser, intermediate but by no 

 means minute one) in front of it. 



Abdomen, ist segment blackish, remainder yellowish grey ; 

 2nd and 3rd narrowly black at the base and on posterior border. 

 A rather narrow dorsal black line extends over both segments; 

 4th segment with two small elongated blackish dorsal spots. 



The whole abdomen with short stiff hairs ; no macrochsetae, 

 but a row of rather stronger bristly hair near posterior border of 

 each segment ; these being somewhat stronger and longer towards 

 the sides and on the 4th segment. Belly concolorous, with short, stiff 

 hairs. Ovipositor capable of complete withdrawal ; when pro- 

 truded, a conspicuous, yellowish grey, nearh' bare, cyhndrical organ 

 with a strong, black, hard apical knob. 



Legs. Black, with a little greyish reflection in certain lights ; 

 minutely spinose. Fore femora with several longitudinal rows of 

 strong bristles on outer side, a stronger spiny row on under side ; 

 middle femora with 2 or 3 short, stiff bristles on hinder side near 

 tip ; hind femora with 2 or 3 similar bristles below, near tip. 



Anterior tibise with 2 distinct spines at tip, shorter ones on 

 hind pair ; middle tibial with 3 or 4 bristles on hinder side ; hind 

 tibiae with apparently an irregular row of similar bristles on outer 

 side. 



Wings. Pale grey, veins yellow on fore border and base, 

 blackish elsewhere. Costa with a few short black bristles at base. 

 Teguke yellowish grey, upper scale small, quadrangular. Halteres 

 very small, yellow. 



Described from a good .series of 9 9 in the Indian Museum 

 taken in Calcutta in early December, 1907. I have seen no si)ecimen 

 that I can assume to be the & of this species. 



It may be remarked that Dr. Annandale has repeatedly ob- 

 .served this fly distended with blood, and actually sucking open 

 sores on cattle. Though the proboscis itself is not sufficiently 

 stiff to pierce the skin the toothed tip would easily enlarge a small 

 hole, otherwise made. 



