30 Transactions. — Zoology. 



Key to the Geneba. 



Style shorter tban third joint of antenna ; fore coxse moderate. 



Proboscis longer than the head . . . . . . Empis. 



Proboscis not longer than the head . . . . . . Hilara. 



Style longer tban third joint of antennae ; fore coxae elon- 

 gated . . . . . . . . . . . . CUnocera. 



Genus Empis, Linnaeus. 



Eyes contiguous in the male, remote in the female. 

 Antennas with the first joint cylindrical ; the second cyathi- 

 form, about half the length of the first ; the third subulate, 

 compressed, longer than the style. Proboscis much longer 

 than the head, directed downwards. Wings with the third 

 longitudinal vein forked. 



Key to the Species. 



Fork of the third longitudinal leaving at an acute arigle. 



Proboscis stout, more tban twice the length of the head E. hudsoni. 

 Proboscis slender, less than twice the length of the 



head . . . . . . . . . . . . E. smithii. 



Fork of the third longitudinal leaving at almost a right 



angle . . . . . . . . . . E. brouni. 



Empis hudsoni, sp. nov. 



Dark-brown, almost black in some lights, the lower surface 

 and femora silvery. Head, thorax, and legs thinly clothed 

 with black hairs. Third joint of the antennae pyriform, the 

 style less than half the length of the joint. Proboscis very 

 stout, more than twice the length of the head. Wings tinted 

 with fuscous, and with a darker cloud in the marginal cell ; 

 the veins black ; fork of the third longitudinal emerging at an 

 acute angle. Length, 3-3i mm. ; wing, 4|mm. 



Hah. Wellington (Hudson). 



Empis smithii, sp. nov. 



Brown, the thorax dusted with yellow, and with four brown 

 bands; a few scattered black hairs on the head, thorax, and 

 legs. Proboscis slender, about one and a half times the length 

 of the head ; yellowish, with the front and tip piceous. Hal- 

 teres tawny. Wings brown ; the veins black. Legs tawny, 

 the last joint of the tarsi fuscous. Wing as in the last species. 

 Length, 5 mm.; wing, 6 mm. 



Hab. Ashburton (Smith). 



Empis brouni, sp. nov. 



Brown, covered all over with grey tomentum. Proboscis 

 brown, slender, about one and a half times the length of the 

 head. Third joint of the antennae subulate, the style short. 

 Wings tinted grey ; the fork of the third longitudinal leaves 



