1913 ■] M. Rezzi: Indian Tvypaneids {Fruit-Flies). 137 



posterior cell extending to the apex of the discal cell ; the posterior cross-vein is 

 therefore margined with brown. The hind half of the third posterior cell and the 

 whole of the fourth are hyaline ; the base of the discal cell is filled with yellow ; the 

 basal and anal cells are wholly brown. The single hyaline dot in the middle is a very 

 small one before the middle of the first posterior cell. 



A single male specimen from Siliguri, N. Bengal, 18 — 20-vii-07 (-^ff-). 



42. Vidalia triceratops, n. sp. c? . 

 (PI. ix, fig. 43). 



An entirely yellow species, distinguished from the preceding by the different wing- 

 pattern and b}^ the lower and not the superior or. being incrassate. I^ength 5 mm. 



Head wholly yellow, with brown geminate spot on the occiput ; frons very broad, 

 pale yellow, the lateral elevated edges black ; face whitish ; antennae and arista pale 

 yellow, this last shortly pubescent ; palpi and proboscis yellow ; epistome prominent 

 as a narrow hem ; face long and distinctly retreating inferiorly ; cheeks broad. The 

 frons has the lateral edges on the anterior portion very prominent but not horn-like. 

 The three last pair of lower or. are very incrassate, black and rigid, as long as the height 

 of the head and truncated at the tip ; there is also another lower or. not incrassated, 

 and two pairs of small superior. 



Thorax and scutellum entirely ferruginous, shining, the pleura paler, the yellowish 

 lateral stripes less distinct ; all the bristles are black. Haltères and squamulae dark 

 yellow. Abdomen entirely shining ferruginous, the last segment black on the sides 

 below ; genitalia with a thick prominent point below. I^egs entirely yellow ; front 

 femora rather incrassate. 



Wings hyaline, narrower and more elongate than in the preceding, with indistinct 

 costal bristle ; veins black, only the costa at the base and the subcosta yellow ; stigma 

 wholly black. The black markings are as follows : a broad patch just below the 

 stigma and in contact with it and giving off two branches, one backwards to the apex 

 of the second basal cell, which is hyaline, and one forwards to the small cross-vein, 

 ending at the fourth vein ; the discal cell shows a yellowish shade just below its end. 

 Anal cell at apex with a small brown spot. A narrow perpendicular streak just after 

 the stigma, reaching the third vein. A broad band on the hind cross- vein, beginning 

 towards the middle of the first posterior cell, and becoming broader towards the hind 

 margin. A broad apical patch, which begins at the last third of the distance between 

 the first and second veins, runs perpendicularly to the third vein, and from here goes 

 obliquely to the hind margin, which it reaches after the end of the fourth vein. 



A single specimen from Darjihng, 7000 ft., 27-v-io, caught by Mr. Brunetti. 



Spilographa armifrons, Voxtschinsky ^ Hor. Soc. Entom. Ross., xxvi, 221 (1891), 

 from Siberia, seems to be a species of the present genus allied to ceratophora, on account 

 of the pattern of the wings. 



22. Xanthorrachis, n. gen. 



Not unlike the European Acidui , but very distinct by reason of the black dots 

 on the thorax and scutellum, by the wavy second longitudinal vein and by the three 

 yellow rays of the wings. 



