82 Transactions. — Zoology. 



distinct from it. The distance between the two cross-veins is 

 about two and a half times the length of the posterior cross- 

 vein, the distance of which from the margin of the wing is 

 about one- half of its own length. 



Genus Lebia, K. Desvoidy (1830). 



Head slightly produced, front flat, epistome rather pro- 

 minent. Palpi nearly filiform. Antennae very short, the 

 third joint round, rather longer than the second ; arista long, 

 bare. Costa of wing armed with short spines. Legs slender, 

 pubescent, with a few bristles. 



Leria placata, sp. nov. 



Brown or dark-tawny, the abdomen rather darker than 

 the legs ; ocellar triangle and face yellowish ; halteres rusty- 

 white. Wings almost colourless, unspotted ; the veins 

 tawny. Posterior cross-vein straight. Length, 7 mm. ; wing, 

 6 mm. 



Hab. Christchurch (H. Clark). 



The head in profile is oblong, higher than long, and the 

 face is distinctly excavated. The eyes are small and round. 

 The antennae are placed in grooves on the face, their bases 

 partly hidden by the projecting front ; the first and second 

 joints are very small, the third is larger and nearly circular. 

 The arista is pubescent and very long in the male ; a 

 bristle is present on the humeral callus. The costa is 

 setigerous from the middle of the costal cell nearly to 

 the tip of the wing. None of the longitudinal veins have 

 bristles. The chief cross-vein lies outside the end of the 

 first longitudinal. The distance between the tw 7 o cross-veins 

 is about one and a half times the length of the posterior 

 cross-vein, which lies at about one-half of its own length 

 from the margin of the wing. Middle tibiae with strong 

 spurs ; the fore and hind tibiae without spurs. 



Leria fulva,.sp. nov. 



Fulvous or testaceous, with grey tomentum on the upper 

 surface of the head, thorax, and abdomen, seen only in 

 certain lights. A broad grey stripe on each side from the 

 prothorax through the base of the wing. Wings ochraceous ; 

 veins tawny ; the cross-veins narrowly bordered with fulvous. 

 Length, 5 mm. ; wing, 5 mm. 



Hab. Christchurch (H. Clark). 



The third joint of the antennae is nearly circular. The 

 middle tibiae have strong spurs, the hind tibiae without 

 spurs. A bristle is present on the humeral callus. The 

 costa of the wing has short distant bristles to beyond the 



