Mr. J. R. Malloch on Hwotte Muscaride. 491 
defined central line on abdominal tergites 3 and 4 brownish. 
Wings clear. Calyptre and halteres yellow. 
Frons at vertex a little less than one-third of the head- 
width, widened anteriorly, each orbit with about seven 
bristles of unequal lengths ; parafacial linear ; cheek a little 
higher than width of third antennal segment, the laticr 
narrow, about three times as long as second; longest hairs 
on arista longer than width of third antennal segment ; 
aristal hairs continued to apex. Thorax without strong 
presutural acrostichals ; postsutural dorso-centrals 3; scutel- 
lum carried well over apex of metanotum, with four strong 
marginal bristles. Hypopygium concealed. Fore tibia with 
a weak antero-dorsal and a strong posterior median bristle ; 
mid-tibia with three posterior bristles; hind femur with 
some long, weak, widely spaced bristles on basal three- 
fourths and three short stout bristles on apical fourth of 
autero-ventral surface, the postero-ventral surface with some 
long, slender, widely spaced bristles; hind tibia with two 
antero-dorsal, two or three antero-ventral, and two postero- 
dorsal bristles; hind tarsus without a basal ventral bristle 
on basal segment. 
Length 5 mm. 
Type, North-west India (no other data). 
This species presents some conflicting characters. The 
venation is typically Anthomyiid, but the shape of the 
abdomen and the strong apical bristles on all segments, as 
well as the presence of a vertical series of bristles on the 
hypopleura, are just as strong evidences of Tachinid relation- 
ships. The arrangement of the sternopleural bristles is 
different from that of most Tachinide and similar to that 
which is found in all Coenosiinz. Ihave had some hesitation 
in placing the genus in the Tachinide, but as at present 
limited it is impossible to include it in the Muscaride. The 
limits of most families in this suborder are very indefinite, 
and possibly with a fuller knowledge of the fauna of the 
world some of them will have to be united, as is the case 
with Muscaride and Anthomyiide. 
Family Muscarida. 
Subfamily Pz4owzyz. 
Genus XENOSI1A, nov. 
Generic characters.—First and third wing-veins setulose 
above, the third setulose below at base ; anterior intra-alar 
bristle absent ; hypopleura with some hairs on upper margin 
Ann. & Mag. N. Hist. Ser. 9. Vol. vii. 29 
