846 DIPTERA OP AUSTRALIA, 



Lent at an obtuse angle near its base, sometimes with a short 

 stumj^ of a vein, the rest straight, twice (or more) the length of 

 petiole of first sub-marginal cell ; marginal cross-vein usually 

 indistinguishable, situated at or before inner end of first sub-mar- 

 ginal cell, and a little before tip of first longitudinal vein ; inner 

 ends of second sub-marginal and first posterior cells in one line ; 

 small cross-vein arcuated ; second posterior cell usually less than 

 half the length of the third posterior ; discal cell elongate, as long 

 or longer than third posterior cell ; great cross- vein situated beyond 

 its inner end ; seventh longitudinal a little arcuated at its tip. 



Hah. — Sydney and Berowra, N.S. W. (Skuse). April and June ; 

 also taken in cojndd during September. 



Obs. — Ten specimens for comparison. The second posterior 

 cell varies in size, even in the wings of a single specimen ; it is 

 entirely absent in one wing of a female specimen before me. The 

 position of the dots on the intermediate thoracic stripe differs from 

 that of L. Iutei2?en7iis, contempta and inornata, O.-Sack., where 

 they are situated at the anterior extremity, close to the collare. 



354. LiMNOPHILA ROSTRIFERA, Sp.n. 



9. — Length of antennae 0-085 inch ... 2-14 millimetres. 



Expanse of wings 0-410 x 0-090 ... 10-4lx2-27 



Sizeof body 0-460x0-050 ... 11-67x1-27 



Head narrowed posteriorly, greyish-brown ; collare prolonged, 

 greyish-brown ; rostrum the length of the head, greyish-brown ; 

 palpi dark brown; antennae brown, the first joint of scapus 

 greyish-brown ; flagellar joints fusiform. Thorax with a greyish 

 bloom, opaque, with three broad brown stripes ; intermediate stripe 

 apparently double, with two small shining black dots at its 

 anterior extremity ; lateral ones extending beyond the suture, 

 more or less coalescent with base of intermediate stripe ; humeral 

 pits prominent ; pleurae and metathorax more or less hoary. 

 Halteres ochreous, with infuscated club. Abdomen brown, 

 superior segments bordered laterally and posteriorly with 



