Hutton. — On the Diptera brachycera of New Zealand. 83 



end of the first longitudinal vein. The chief cross- vein lies 

 outside the end of the first longitudinal. The distance be- 

 tween the cross-vein is about twice the length of the pos- 

 terior cross-vein, and the distance of the latter from the 

 margin of the wing is one-half of its own length. 



Family SCIOMYZIDJE. 



" Neuration of the wing complete ; two basal cells of 

 rather considerable size ; auxiliary vein well separated from 

 the first longitudinal. On the lateral border of the front, 

 before the vertical bristles, there are a pair of bristles. Fa.ce 

 proportionately long, without distinct grooves for the an- 

 tennae ; border of the mouth sharp, without vibrissae. Middle 

 tibiae with a number of bristles on the tip ; all the tibiae on 

 the outside, before the tip, with a small upright bristle" 



(Loew). 



Key to the Genera. 



Third joint of the antecma; oval. 



Antennse short . . . . . . . . Tetanocera.- 



Antennre elongate . . . . . . . . Limnia. 



Third joint of the an'ennse Dearly circular. 



Face strongly receding . . . . . . Trigonomeiopus. 



Pace slightly receding . . . . . . . . Sciomyza. 



Genus Sciomyza, Fallen (1839). 



Antennae not reaching the epistome, the third joint nearly 

 circular, much longer than the second. Head large, face 

 slightly receding; epistome not projecting. Abdomen de- 

 pressed, linear in the male, fusiform in the female. Legs 

 pubescent, slightly bristly. 



Sciomyza nigricornis. 



S. nigricornis, Macquart, Dipt. Exot., Supp. iv., p. 250, pi. 25, 

 fig. 11 (1850) ; Hutton, Cat. Dipt. N.Z., p. 67. 



" Testacea. Antennis nigris, basi testaceis. Pedibus 

 fiavis. Femoribus apice nigris, anticis spinosis ; tibiis apice 

 nigris. Alis fiavis." Length, 8mm. (Macquart.) 



Hab. Akaroa, New Zealand, and Tasmania (Paris Museum). 



I do not know this species. 



Genus Tetanocera, Dumeril (1809). 



Face oblique. Antennae elongate ; second joint long; the 

 third oval, a little longer than the second. Legs stout, hairy, 

 with a few bristles ; the hind femora not much thickened. 

 Abdomen nearly linear in the male, subfusiform in the 

 female. 



