42 DIPTERA 



tawny hairs^ adorned with a large tawny spot on each side of the base. 

 Legs pitchy^ clothed with tawny hairs ; shanks tawny towards the 

 base ; claws and foot-cushions taMaiy ; tip of claws black ; hind thighs 

 slightly thickened. Wings slightly grey; wing-ribs pitchy; veins 

 black. 



'Length, 5 lines. 



New Zealand (Dr. Sinclair) . 



H. HocHSTETTERi. NowicM, l.c, p. 23 (1875) . 



Male and Female. Black, clouded ; abdomen shining-blue ; last 

 joint of the antennae, frontal lunula, scutellum, and tubercle under the 

 wing yolk-yellow ; wings cinereo-hy aline ; the stigma fuscous. 



Length, 4-4i lines ; wing, 4-4? lines. 



New Zealand (Edwards) , 



Genus-SYEITTA. 



>S/. Fargeau et Serville. 



Face keeled, epistome prominent. Second joint of the antennae 

 naked, the third orbicular; style rather short. Abdomen elongated, 

 narrower than the thorax. Posterior femora short, strongly inflated, 

 denticulated below ; tibiae incurved ; first joint of the tarsi swollen. 

 First posterior cell rounded at the base. 



S. ocEANicA. Macquart, Dipt. Exot., Svpp. 5, p. 112 (1854). 



Female. Palpi small, black. Face rather concave, with silvery 

 down, and a black band in the middle. Anterior portion of the 

 front with white down, the rest shining-black, prolonged into a 

 j)oint in front. The two first joints of the antennae brownish- 

 testaceous ; the third black, brown below. Thorax shining-black, 

 the sides with white down. Abdomen dull black, the second segment 

 with two yellow spots, shining, and reaching the anterior border; 

 the third and fourth with interrupted yellow incisions ; the third with 

 two shining spots, the fourth entirely shining. Anterior and inter- 

 mediate femora black, the extremity fulvous ; the posterior pair 

 entirely black; anterior and intermediate tibiae blackish, the base 

 fulvous ; the jjosterior pair black, with the knees and a ring in the 

 middle fulvous ; tarsi black, the first joint fulvous. Poisers fulvous. 

 Wings clear; veins normal. 



Length, 3 lines. 



Tahiti and New Zealand (M. Bigot) . 



