odontomyia. 69 



pubescence ; pale yellowish pubescence on prothorax, and short 

 golden-yellow pubescence broadly just below dorsum and around 

 base of wings ; inetathorax with a tuft of dirty grey pubescence. 

 Scutellum bright apple-green or yellowish, narrowly black at base; 

 bare, except for a small white fringe on hind margin ; spines pale 

 yellow. Abdomen in S pale yellowish, varying from greenish 

 yellow to brownish; 1st segment with an elongate transverse 

 black spot on middle of hind margin ; 2nd, 3rd, and 4th each with 

 a large black spot in the centre reaching from anterior to hind 

 margin, broader in front; 5th with a more or less similar spot not 

 reaching hind margin ; all the spots contiguous, forming an 

 angular black median stripe. In one of the two § $ before me 

 the spots are as in the <5 , in the other they are much enlarged, 

 leaving only a moderately broad pale side-margin. Venter 

 yellowish or brownish yellow, sometimes a little marked with 

 brown or with a very narrow median line. Legs orange, tips 

 of tarsi barely brownish. Wings clear, the stronger veins pale 

 yellow ; halteres brownish yellow or apple-green. 



Length, 8-11 mm. 



Described from four J J and two 5 $ in the Pusa collection, 

 and a number of both sexes in the Indian Museum : Pusa, 10. 

 viii. 1915 ; Chapra, Bengal ; Calcutta, iii., iv., ix., x., xii., common 

 on chrysanthemums ; Port Canning, 24. xii. 1907, on Euphorbia ; 

 Coimbatore, Madras, "lored from aquatic larva,'"' 7. & 10.x. 1913; 

 Bangalore (Cameron). 



Types in Indian Museum, from Calcutta, 18. iii. 1907 ( 6 ) and 

 23. iv. 1907 ( $ ). 



Larva of at least 12 segments, with perhaps an additional one, 

 too retracted to be visible, following the narrow 1st (head) seg- 

 ment ; dark nut-brown, with darker marks ; venter rather 

 flattened, yellowish, with a few short hooks on hind margin of 

 the last five segments, apart from the ultimate segment which 

 bears a tuft of whitish curling breathing-tubes. Length, 21 mm., 

 exclusive of breathing-tubes. 



Three previously-described species must be very near the above, 

 and though none of the descriptions quite apply, it may possibly 

 prove identical with one of them. 



40. Odontomyia solennis, Walk. 



Odontomyia solennis, Walker, Ins. Saund., Dipt, i, p. 79 (1856). 



$ 2 • Head with eyes of cT bare, practically contiguous for 

 only a short distance ; Irons widening very gradually to vertex, 

 which is black, with very short yellow hairs and reddish-brown 

 well-separated ocelli ; frontal triangle very small, black, with 

 silvery-white pubescence ; face and underside of head (except 

 broadly around mouth) black, with pubescence that appears dark, 

 viewed from above, and silvery white viewed from below ; lower 

 orbits of eyes with white pubescence; mouth-opening broadly 



