280 sYKPHiD.i:. 



black bristles. Pubescence of legs mainly black, rather long and 

 dense, except towards base and tips, on posterior femora and 

 tibiae. Hind coxae distinctly couically produced hindwards ; a 

 distinct blunt spine below hind femora towards tip in ^ , shorter 

 and more tootli-like in §. TFm^s yellowish-grey ; about anterior 

 half yellowish-brown, the colour fading hindwards, leaving about 

 apical half of 1st and 3rd posterior cells, and the discal, anal and 

 axillary cells, paler. Halteres yellowish, with black knobs. 



Length, 15 mm. to front of eyes, +5 mm. the produced 

 rostrum. 



Described from a perfect pair in' the British Museum. 

 Darjiling, 6000 ft., 26. iii. 1894, d ; 7000 ft., v. 1894, $ (both 

 Col. Bingham). 



This large and handsome species was brought to my notice 

 from a quantity of unnamed material by Major Austen, after 

 whom I have pleasure in naming it. 



Genus CRIORRHINA, 31eig. 



Criorrhina, Meigen, Syst. Bescbr. iii, p. 236 (1822). 

 Heliophilus, Meigen, Klass. i, xx (1804). 

 Somrda, Macquart, Dipt. Exot., Siippl. 2, p. 57 (1847). 

 Deineches, Walker, Ins. Saund., Dipt, i, p. 227 (1852). 

 Chriorhyna, Rondani, Dipt. Ital. Prod, ii, p. 74 (1857). 

 3Iicrorhincus, Lioy, Atti Isti. Veneto, (3) ix, p. 751 (1864). 

 JEriop/wra, Philippi, Verb, zool.-bot. Cxes. Wieu, xv, p. 735 (I860). 

 Bracltymiiia, Williston, Cnnad. Entoni. xvi, p. 77 (1882). 

 Eurhinamallota, ^^'illistou, Proc. Amer. Phil. Soc. xx, p. 330 



(1882): Bigot, Auii. Soc. Ent. France, (6) ii, Bidl. p. Ixxvii 



(1882).' 

 Eurhynomallota, Bigot, op. cit. (6) iii, p. 225 (1883). 



Genotipe, Syrphus silicus, Fall., by Westwood's designation, 

 1840. 



Head rather flattened, a little wider than thorax (apart from 

 . pubescence of latter) ; eyes bare, not quite touching in c? , dis- 

 tinctly though not widely separated in 2 ' fi'ons flattened, ending 

 in an antennal prominence, below which the face is excavated 

 distinctly, thence forming a large, stout snout, in which a central 

 knob is moderately distinct. Antennae moderately long, 3rd 

 joint rounded or ovate, deeper than long ; arista sub-basal, bare. 

 Thorax elongate-oval, rather arched, scutellum concolorous, both 

 densely pubescent without bristly hairs. Abdomen varying in 

 shape from nearly rounded to a narrow ellipse, densely pubescent. 

 Legs rather strong ; hind femora sometimes thickened but normally 

 without pi'ocesses below * ; hind tibiae often curved, sometimes 

 compressed. Wings with marginal cell widely open ; anterior 

 cross-vein far beyond middle of discal cell, very oblique. 



Life-history. Yerrall suggests that the metamorphoses may 

 occur in the sap which flows from injured or ulcerated trees. The 



* C. dentata,'Br\.m.,\B in this respect an exception amongst Oriental species. 



