BY FREDERICK A. A. SKUSE. 831 



beyond middle of discal cell ; the latter closed, elongated, its inner 

 half cuneiform] y narrowed, and its inner end a little before the 

 origin of prsefurca ; the great cross- vein a short distance beyond 

 inner end of discal cell ; fourth longitudinal vein originating 

 in fifth longitudinal at a little before one third the length of 

 the wing, joined at its base to first longitudinal by a short cross- 

 vein ; fifth, sixth and seventh longitudinal veins straight. 



The most striking peculiarities in the venation are, the course of 

 the first longitudinal which terminates in the second, the absence 

 of the marginal cross- vein, the first and second sub-marginal cells 

 being both petiolate, the position of the small cross- vein, and lastly 

 the shape and position of the discal cell. 



This genus seems undoubtedly related to Gonomyia. 



346. Lechria singularis, sp.n. (PI. xxii., fig. 16). 



^. — Length of antennae 0*040 inch ... 1- 01 millimetres. 



Expanse of wings 0-210 x 0-057 ... 5-33x1-44 



Size of body 0-180x0-033 ... 4.56x0-84 



Head blackish or sooty brown. Rostrum, palpi and antennae 

 dark brown. Thorax brown, opaque, with a yellowish-grey bloom 

 in a certain light. Halteres yellow, with slightly infuscated club. 

 Abdomen brown, the venter more ochreous; forceps yellow. Legs 

 dull ochre-yellow, the tips of the femora and the last three joints 

 of tarsi infuscated. Wings hyaline, appearing covered with micro- 

 scopic dots only under a high power; stigma long, narrow, brownish; 

 veins brown. The venation as described in the particulars of 

 generic characters. 



Hah. — Wheeny Creek, Hawkesbury District. One specimen 

 in January (Skuse). 



Genus 20. Trentepohlia, Bigot. 



Trentepohlia, Bigot, Ann. Soc. Ent. Fr. (3rd ser.) II., p. 473, 

 1854; Mongoina, Westwood, Trans. Ent. Soc. Lond. 1881, p. 364, 



