Genera and Species of Blood-suching Muscidae. 289 



of fourth segment, narrowly interrupted before hind margins of 

 second and third segments, a pair of transversely elongate 

 dusky blotches on first segment, a pair of large clove-brown 

 spots on second segment, and a pair of similar but smaller spots 

 on third segment ; wings slightly infuscated, light sepia- 

 coloured / legs clove-brown, bases of tibia ochraceous-bnff. 



Head: face and sides of front bright yellowish grey, 

 occiput dark grey, frontal stripe clove-brown, hair and 

 bristles black; palpi tawny, clothed on outer side with black 

 bristles, tips strongly spatulate (as in H. stimulans, Mg.), 

 extreme tips sometimes brown ; proboscis clove- brown; an- 

 tennce, including arista and its hairs, clove-brown, under side 

 of arista usually with four hairs. Thorax clothed exclu- 

 sively with black hairs and bristles ; dorsum lighter grey on 

 front margin and humeral calli, admedian stripes extending 

 from front margin to about half-way between transverse suture 

 and prsescutellar groove, portion of outer stripes behind 

 transverse suture extending somewhat further back, median 

 stripe usually extending from front to hind margin, but its 

 anterior extremity sometimes indistinct. Abdomen clothed 

 exclusively with black hairs, median longitudinal stripe on 

 dorsum regularly diminishing in width from front to rear, 

 dusky blotches on first segment clove-brown, but lighter iu 

 tint than spots on the two following segments, spots on 

 second segment triangular in shape, near but not in contact 

 with hind margin, spots on third segment rounder, some- 

 times quite small. Wings : veins for most part dark brown, 

 first longitudinal vein either entirely bare or at most with 

 one or two minute black bristles near base, third longitudinal 

 vein with three or four very minute black bristles at base. 

 Squamce : anterior squama cream coloured, shining and 

 iridescent, posterior squama buff. Halteres bufl'. Legs 

 clothed exclusively with black hair and bristles, femora and 

 tibise greyish beneath. 



India : type and five other specimens from Kasauli, 

 Punjab, 1907, "on cows^"" {Lieut. -Colonel F. Wyville Thom- 

 son, I.M.S.). The donor's field-note runs: — "Caught on 

 cattle : the flies sucked the animals, and their abdomens 

 became distended with blood. I have never noticed them 

 biting man." 



Hcematobia sanguisvgens (J resembles the ^ of the Euro- 

 pean H. stimulans, Mg., very closely, but is distinguished by 

 Its usually somewhat smaller size (^average length of 6 (^ ^ 

 5'75 mm.), by the median dark dorsal stripe on the abdomen 

 being practically continuous throughout its extent instead of 

 » idely interrupted before reaching the hind margins of the 



