386 Records of the Indian Museum. [Vol. IV, 



middle of the black colouring. Legs brownish, the anterior femora 

 yellowish, the anterior tibiae curved and slightly incrassate, the 

 posterior ones broad, all with short fringes of black pubescence, 

 most conspicuous on the hind pair, tarsi pale yellowish on first 

 joint and at base of other joints. Wings similar to those of Chry- 

 sops peUucida. lycngth about 8 mm. 



Chrysops pellucida, Fabr. . 

 (Plate XV, fig. 2.) 



Syst. Antl., 113, 11 (1805) ; Wied., Dipt, exot., 107, 8 (1821) ; 

 id.,^ Auss. zweifl. Ins., i, p. 206 (1828) ; Ricardo, Ann. Mag. Nat. 

 Hist. (7), ix, p. 373 (1902). 



Black, with the second segment of the abdomen at its base 

 white, pellucid. Wings white : band black. Habitat Tranquebar 

 (S. E. India). 



In size and general appearance related to Chrysops dispar, of 

 which it is perhaps only a variety. Antennae cylindrical, black, 

 almost as long as the body. Head and thorax black, unspotted. 

 Abdomen black, with the second segment at the base white, pel- 

 lucid, which colour extends to the sides. Wings white ; the wide 

 middle cross-band black, paler at the border with a white spot. 

 Legs black, tibiae compressed. Fabr., Syst. Antl., p. 113. 



Black, the second segment of the abdomen white pellucid; 

 wings with a black band, excised on the interior margin. 3 

 lines, 5 . 



Undoubtedly a distinct species from Chrysops dispar. An- 

 tennae yellowish at the base ; their length hardly more than ih 

 lines, and therefore the Fabrician text is hardly to be understood, 

 unless he intended not to include the head. Head grey haired. 

 Calli black. Thorax black, with golden yellow haired sides ; 

 breast sides blackish, with a golden yellow stripe under the root 

 of wings. The transparent white part of the second segment of 

 abdomen slopes downwards on both sides almost to the hind bor- 

 der, so that a black triangular spot remains. The outer border of 

 the wings black to the apex. In the legs the knees and base of tarsi 

 are yellowish. In the Royal Museum and also a mutilated speci- 

 men in the Fabrician collection. Wied., Auss. zweifl. Ins., i, p. 206. 



In the Indian Museum coll. there is a male from Trichinopoly, 

 S. E. India, which exactly fits the above description. The length 

 of antennae given by Fabricius as nearly equal to that of the body 

 must be an error. 



or' . Eyes brown with some blackish markings. Ocelligerous 

 tubercle very prominent, blackish. Frontal triangle black covered 

 with grey tomentum. Face black covered with dense grey tomen- 

 tum, in the middle below the antennae is a large shining black 

 tubercle and a small black spot on each side, the lower part of 

 face below also black ; pubescence in lower part of face whitish. 

 Pa//)t small, blackish, with black hairs. Antennae long, slender, 



