igii.] G. RiCARDO : The Oriental J abanidae. 385 



Chrysops translucens, 9 , Macquart. 



Dipt. exot. (i), i, p. 162 {1838); Ricardo, Ann. Mag. Nat. 

 Hist. (7), ix, p. 375 (1902). 



Black. Abdomen with the first and second segment white 

 pellucid at the base. Femora brown, red below ; tarsi red. Wings 

 with a black band, excised on the interior border. Length 4 lines. 

 Palpi brownish. Face pale fawn coloured, shining ; sides and 

 cheeks shining black, with a spot of grey tomentum at the border 

 of the eyes. Forehead denuded, entirely shining black. Antennae : 

 first joint bare, pale fawn coloured, of ordinary length ; the second 

 bare, same length as the first, brownish fawn coloured; the third 

 wanting Thorax denuded, shining black ; a triangular spot of 

 golden yellow hairs in front of the wings. Abdomen : first seg- 

 ment transparent white, black on its posterior border, a little nar- 

 rowed in the middle, reduced to nothing on the outer borders ; 

 second silver}- white with a large triangular black spot on the 

 posterior border in the middle of which is a small dorsal white 

 spot, transparent and triangular ; the third shining black with a 

 small dorsal white band, following that of the second segment, the 

 others shining black ; underside : the first two segments transparent 

 white, the second black on its outer borders. Femora brown- 

 ish black above, posterior ones black ; tibiae brown, rather stout ; 

 anterior tarsi brown ; base of the first joint fawn coloured, inter- 

 mediate and posterior ones fawn coloured ; the last joints brown. 

 Halteres black. Wings hyaline ; the outer border narrow, reach- 

 ing the apex ; a little spot near the base and a cross-band brown ; 

 this latter hollowed out in the middle of the fifth posterior cell. 

 From Java. Monsieur Serville's collection. This species is nearl}- 

 related to Chrysops pelliicidus , Fabr. and Wied., of which perhaps 

 it is only a variety, but the latter differs in particular by the 

 antennae being i^ lines long (though the third joint is wanting in 

 C. translucens, they could not attain this length), by the abdomen 

 and by the black legs. Macquart, Dipt. exot. (i), i, p. 162. 



One female from Kuala Lumpur (H. C. Pratt). Presented to 

 Brit. Mus. coll. by London vSchool Tropical Medicine. 



From a comparison of this specimen with the male and 

 female specimens of C/iryso/)s />f//«c/rf(;r, Fabr., in Brit. Mus. coll. the 

 distinctions between the two species ^m«s/wcd^«s, Macq., and pcllu- 

 cida, Fabr. , appear well marked. The face in Chrysops translucens is 

 yellowish with a black spot on each side Ijelow antennae, the sides 

 of face bordering the median line yellowish brown shining, becom- 

 ing blackish over the oral opening, base of cheeks black. Forehead 

 black, with broad band of grey tomentum below the frontal callus, 

 which appears transverse, its anterior border sinuous, reaching 

 the eyes. Antennae yellowish, not bare, the second one browner 

 and the dark pubescence thicker. Abdomen distinguished at once 

 from the Fabrician species by the white base of the first segment, 

 and by the presence of the whitish or yellowish spots on second 

 and third segment, as described by Macquart, conspicuous in the 



