22 Transactions. — Zoology. 



Itamus varius. 



Asilus varius, Walker, Cat. Dipt, in Brit. Mus.,p. 457 (1849) ; 

 Hutton, Cat. Dipt. N.Z., p. 28. 



Lower bristles of the epistome white, some of the upper 

 ones black. Abdomen brown, the hind borders of the seg- 

 ments pale-yellow. Length, 18 mm. ; wing, 12-13 mm. 



Hab. Throughout New Zealand and the Great Barrier 

 Island. Common. 



Itamus bulbus. 



Asilus bulbils, Walker, Cat. Dipt, in Brit. Mus., p. 465 (1849) ; 

 Hutton, Cat. Dipt. N.Z., p. 29. Itamus mdano^ogon , 

 Schiner, Eeise der " Novara," Dipt., p. 190 (1868) ; Hutton, 

 I.e., p. 28. Itamus inquisitor, Nowicki, Mem. Krakauer 

 Akad. Wissen., 2, p. 21 (1875) ; Hutton, I.e., p. 27. 

 Bristles of the epistome black. Abdomen black. Length, 



18 mm. ; wing, 12-13 mm. 



Hab. Auckland (Captain Broun) ; Wellington (Hudson). 



Genus Senopkosopis, Macquart (1839). 



"Body narrow. Face rounded, without any projection, 

 very narrow ; moustache mixed with some long and slender 

 hairs. Front narrow. Eyes large. Abdomen slender; male 

 organ small and but slightly projecting. Femora, tibiae, and 

 tarsi with long slender hairs below. Wings with the fourth 

 posterior cell petiolate, the petiole rather long and the ter- 

 minal nervure oblique " (Macquart). 



In the New Zealand species the face projects slightly in 

 the female, but not nearly so much as in Asilus. Also they 

 have not the long drooping hairs on the front. But in other 

 respects they closely resemble the type. The first joint of the 

 antennas is cylindrical, rather long and narrow in the male 

 shorter in the female ; the second cyathiform ; the third subu- 

 late. 



Senoprosopis lascus. 



Asilus lascus, Walker, Cat. Dipt, in Brit. Mus., p. 466 (1849) ; 



Hutton, Cat. Dipt. N.Z., p. 30. 



Vertex with yellow hairs, face black. Bristles of the epi- 

 stome white. Antennas black ; second joint and base of the 

 third joint brown in the male, yellow in the female. Abdo- 

 men dark-brown, with scattered yellow hairs; the posterior 

 portions of the first six segments yellow. Wings grey. Legs 

 yellowish -brown, the outer surface and the tarsi darker 

 brown; the femora and tibiae with a few long white hairs, 

 in addition to the shorter ones. Length, 12 mm. ; wing, 

 9^ mm. 



Hab. Auckland (Captain Broun) ; Wellington (Hudson). 



