90 Transactions. — Zoology. 



Genus Ephydra, Fallen (1813). 



Face vaulted and projecting ; eyes bare ; opening of the 

 mouth very large, ciliated on its border ; clypeus concealed in 

 the oral cavity ; arista pubescent. Claws long and nearly 

 straight ; pulvilli indistinct. No vibrissae. 



Ephydra aquaria, sp. nov. 

 Vertex dark-brown, with slight aeneous reflections ; the face 

 brownish-yellow. Antennae and proboscis piceous. Thorax 

 brown, shining, the sides and under-surface brownish-yellow. 

 Abdomen dark-brown, with bronzy reflections. Legs black. 

 Wings clear ; the veins black. Chief cross-vein opposite the 

 end of the first longitudinal ; distance between the two cross- 

 veins rather more than twice the length of the posterior, 

 which is situated at about one-half of its length from the 

 margin of the wing. Length, 5 mm. ; wing, 4i-mm. 



Hab. Christchurch (F. W. H.). 



The third joint of the antennae is oval and about twice the 

 length of the second ; the arista is pubescent. There are no 

 small basal cells in the wing. 



Genus Domina, gen. nov. 



Head vertical ; face broad ; mouth rather large ; the cly- 

 peus prominent. Eyes bare. Third joint of the antennae 

 large, nearly round ; the arista pectinated. Bristles on the 

 vertex, but none round the mouth; a pair of vibrissae consider- 

 ably above the oral opening. Fore femora not thickened. 

 Wings without the small basal cells. First longitudinal vein 

 attaining to about one-fifth of the wing, the second to three- 

 fourths, and the third to the tip. The costa stops at the end 

 of the third longitudinal vein. 



Domina metallica, sp. nov. 



JEneous, shining; the tarsi tawny. Wings pale-brownish, 

 the veins piceous. The chief cross- vein lies just inside the 

 end of the first longitudinal ; the distance between the two 

 cross-veins is about three times the length of the posterior 

 cross-vein, which is placed rather more than its own length 

 from the margin of the wing. Length, 2 mm. 



Hab. Christchurch (F. W. H.). 



The third joint of the antennae is rather longer than broad. 

 The arista carries six or eight long hairs on the upper side 

 only. 



Family DEOSOPHILIDiE. 



"Front with bristles above ; face with distinct subantennal 

 grooves; a feeble, often rather indistinct, vibrissa at the 

 border of the mouth. Middle tibia with very feeble spurs ; on 



