42 Transactions. — Zoology. 



Hah. Wellington (Hudson). 



This is a robust species, with thickish legs and no empodia. 

 It has five posterior cells. The rostrum is thick, nearly 

 vertical, and about as long as the head. 



B. Tibial spurs short. 

 Limnophila delicatula, sp. nov. 



Uniform brown, the abdominal segments with paler 

 posterior margins. Halteres fuscous. Wings clear, without 

 spots or stigma ; the veins fuscous. Five posterior cells. 

 Subcostal cross-vein close to the tip of the auxiliary. The 

 prsefurca forms more than a half of the second longitudinal. 

 The posterior cross-vein joins the discal cell at a distance 

 from its inner margin which is less than one-fourth of its 

 length. Length, ? 12imm. ; wing, J 13 mm. The male is 

 unknown. 



Hab. Wellington (Hudson). 



The tibial spurs and empodia are short but distinct. 

 The legs are particularly long and slender. 



Limnophila marshalli, sp. nov. Plate IV., fig. 16. 



Dark-brown ; coxae and femora pale yellowish-brown, the 

 latter with fuscous tips and a fuscous band near the tip ; 

 tibise and tarsi fusco^is. First and second joints of the 

 antennae pale yellowish-brown, the flagellum fuscous. Hal- 

 teres yellowish, with fuscous tips. Wings pale-yellowish, 

 with brown spots at the origin of the second longi- 

 tudinal, at the subcostal cross -vein, at the tips of the 

 auxiliary and first longitudinal, on the chief cross-vein, 

 at the outer margin of the discal cell, at the base of the 

 second posterior cell, on the posterior cross-vein ; two in 

 the posterior basal cell, one in the axillary cell, and others 

 at the tips of all the longitudinal veins. Subcostal cross-vein 

 far from the tip of the auxiliary and in a line with the chief 

 cross- vein. First submarginal cell not much more than half 

 the length of the second. Posterior cross-vein entering the 

 discal cell near the middle. Seventh longitudinal vein 

 sinuated. Length, 5 10 mm.; wing, $ 11mm. The male 

 is unknown. 



Hab. Wellington (Hudson). 



I have named this species in honour of Mr. P. Marshall, 

 the author of three excellent papers on New Zealand Diptera 

 in the " Transactions of the New Zealand Institute,'' 

 vol. xxviii. The tibial spurs are small, and lie close under the 

 metatarsi ; the empodia are distinct. The eyes are separated. 

 The antenna3 are 16-jointed ; those of the flagellum are cylin- 

 drical, except the two last, which are oval. 



