286 



SYRPHID.i:. 



hlackisb-brown lower part. The pubesceDce on the anterior and 

 hinder parts of the thorax is yellowish-grey, the ground-colour of 

 the anterior part less pale: the wing-veins are rather more 

 infuscated. The hind femora are moderately thickened on under 

 side towards tip, bearing some stiff black liair there, the rest of 

 their pubescence being yellowish. Both the hind femora and hind 

 tibiae have a, somewhat crooked appearance. The specimens 

 appear to have been in spirit. 



220. Criorrhina dentata, Bniti. 



Cn'orhina dentata, Bnuietti, Rec. Ind. JNIus. ii, p. 87, figs. Lead, 

 abdoaieii, hind leg (1908). 



c? . Head: autennal protuberance rather prominent, face much 

 excavated below antenna;, and bearing a central knob. Eyes 

 black, sub-contiguous for only a very short space, facets smaller 

 round the outer parts. Vertex moderately narrow, raised, black, 

 with long black hair in front, and tawny-brown hair behind, on 

 posterior edge. Face dull yellowish, with, seen from above, a 

 silvery-white dusted reflection ; upper side of antennal promi- 

 nence shining black. Antenna) red-brown; a few hairs on upper 



Fig. 50. — Criorrhina dentata, Bnin., (^ , head in 

 front and side view. 



side of basal joints ; arista orange, bare. Whole side of the pro- 

 duced snout, from eyes to tip, shining black, bare ; a central wide 

 bare shining brown stripe from base of antennae to tip of snout ; 

 month black, proboscis dark brown, rather long. Back of head 

 grey; posterior orbit of eyes with a fringe of grey hair which is 

 shortest behind the vertex and longest on under side. Thorax 

 feneous, with a slight retldish-coppery tinge, closely covered with 

 thick, long, light brown hair, Avhich extends over the concolorous 

 scutellum, but is almost absent at base of latter, and longest of 

 all and erect on its posterior border. Sides of thorax blackish - 

 grey, shining, with thick long brownish-grey hair. A small 

 yellow callus a little below the shoulder, bearing apparently 

 microscopic cream-coloured pollinosity. A small oval callus, 

 hollowed in centre, above each hind co.xa, bearing very shoi't 



