336 MEDICAL ENTOMOLOGY 



Smith records enteniata from Benares, the specimens being identified 

 by Austen, and states that it breeds in human excrement, and in cow 

 dung cakes. It is also said to occur in Suez, Aden (Hewitt), and Khar- 

 toum (Balfour). 



Musca domestica, sub-species determinate, Walker. This species, from 

 the East Indies, is described by Walker as follows: 'Black, with a 

 ' hoary covering ; frontalia broad, black, narrower towards the feelers ; 

 ' eyes bare; palpi and feelers black; chest with four black stripes ; abdomen 

 ' cinerous, with a large tawny spot on each side at the base ; legs black ; 

 ' wings slightly grey, with a tawny tinge at the base; prebrachial vein (fourth 

 ' longitudinal) forming a very obtuse angle at its flexure, very slightly 

 ' bent inward from thence to the tip ; lower cross-vein almost straight ; 

 ' alulae whitish, with pale yellow borders ; halteres tawny.' 



Aldridge states that at certain seasons in Meerut it is present in enor- 

 mous numbers, and Dwyer records it from Mhow. Smith found this 

 species in a military hospital ward at Benares. It is also said to occur 

 in Deesa, and in the Kangra valley; Hewitt records it from Aden. It 

 breeds in night soil. 



Musca angttstifrons, Thomson. Male. Front narrow ; ground colour 

 of thorax slate grey, with two very broad black stripes tailing off at the 

 lower border of the thorax ; a broad light grey stripe running down the 

 centre of the thorax ; scutellum grey with a black apex. Abdomen olive 

 grey with a median black stripe on the first three segments ; the first seg- 

 ment is often entirely black or black at the sides ; the second segment 

 has a well-marked broad clove brown lateral stripe, and light patches at 

 the sides ; the fourth often has a dark median stripe which is only seen 

 in certain lights, and two shimmering lateral patches. Length 6 to 

 6'5 mm. 



Female. Front wide ; thorax grey, with two moderately broad black 

 admedian stripes, broadening out at the suture, where they are joined 

 by a narrow external stripe. Abdomen with first segment dark ; second 

 with a narrow median black stripe, lateral brown bands and light patches 

 at the sides ; third segment the same except that the brown bands are 

 narrower ; fourth segment with two admedian brown bands, and light 

 patches at the sides. Length 6 mm. 



This species is widely distributed along the North African coast as well 

 as in other parts of Africa. It is common throughout South India and 

 occurs in parts of Bombay and Gujarat. Its habits in Madras are 

 worth noting, for in addition to being a house and bazaar fly, it is 

 also frequently seen on cattle, sucking up the blood which exudes from 



