374 Records of the Indian Museum. [Voi,. IV, 



Silvius indianus, ? , n, sp. 



A small reddish yellow species, antennae and face, frontal 

 callus, palpi and legs yellowish. Wings hyaline, with the fore 

 border narrowly dark brown. Length 9 mm. 



Face greyish yellow^ convex in the middle, the sides of this 

 middle part are shining reddish yellow with a greyish yellow 

 rather tomentose median stripe, foveae on cheeks distinct, lower 

 part of face with short white pubescence, some black hairs near the 

 eyes. Proboscis short. Palpi reddish yellow, the first joint short, 

 the second about four times as long, slightly curved, flat, ending 

 in a point, with some very short black pubescence. Antennae red- 

 dish 3'ellow,the first two joints yellowish with black pubescence, the 

 first joint twice as long as the second one, the third long and slen- 

 der, very slightly wider at base, blackish on the last four annu- 

 lations. Forehead greyish 3^ellow, the frontal callus shining red- 

 dish yellow, heart-shaped, not reaching the eyes, ocelli at vertex 

 placed on a blackish spot. Thorax blackish but densely covered 

 with greyish yellow tomentum and pubescence, appearing yellowish. 

 Scutelhim identical. Abdomen more reddish yellow, with a 

 median short black stripe on the first two segments reaching to 

 the third segment, pubescence chiefly consists of very short black 

 hairs ; under side the same. Legs reddish yellow, the apex of fore 

 tibiae and all tarsi blackish. Wings hyaline, the costal cell wholly 

 yellowish brown, the marginal cell the same at its base with a slight 

 shading at its apex on fore border, the stigma large, dark brown, 

 the first longitudinal vein thickened, dark brown, the others pale 

 yellow, all cells open except the apical cell, appendix hardly visible. 



CHRYSOPS, Meigen. 



Nouvelle Classification, p. 23 (1800); IlHger's Magazine, ii, 

 p. 267 (1803). 



The species of this genus of the subfamily Pangoninae are 

 easily recognized by the wings being usually ornamented with a 

 dark median cross-band, by the shining black tubercles on the face 

 and forehead, with three ocelli on the vertex, and by the long 

 antennae, the second joint usually as long or nearly as long as the 

 first joint. The species are small in size and are not very numer- 

 ous ; in Ann. Mag. Nat. Hist. (7), ix, p. 372 (1902), I brought 

 the number up to 20, now reduced by discover}^ of further syno- 

 nyms to 16 with I new species described, making the total 17. The 

 following is a list of all the described species and s^-nonyms : — 

 Chrysops alter, Rondani. 



hijasciata, Macquart=^ dispar, Fabr. 



cincta. Bigot. 



clavicrus, Thomson ? = cincta Bigot. 



designata, sp. n. 



dispar, Fabricius. 



