782 DIPTERA OF AUSTRALIA, 



vein, but often at some distance anterior to this tip, crossing the 

 stigma; the tip of the auxiliary vein is usually far beyond the 

 origin of the prsefurca. Antennae 14- (often apparently 15-) 

 jointed. Feet comparatively strong ; tibiae without spurs at the 

 tip; empodia indistinct or none; ungues with several teeth on the 

 under side, giving them a pectinate appearance. The forceps of 

 the male consists of two horny, movable hooks, and a horny style 

 under them." (Osten-Sacken). 



The species hereafter described seems to differ from typical 

 LimnohicB in having the general appearance of a Dicranomyia, 

 being of moderate size, dull-coloured, etc. ; also, the ungues do not 

 exhibit a pectinate appearance, showing only indistinctly two 

 minute teeth near the base. It is all the more remarkable that 

 this species should be so Dicranomyia-\\k.Q, as it belongs to the 

 section having the cross-vein close to the tip of the first longitu- 

 dinal vein, this latter character being always associated with the 

 typical highly coloured Limnohice,'^ whilst in antennae, structure of 

 male forceps, and length of auxiliary vein it is a true Limnohia. 



309. Ldinobia bidentata, sp.n. 



(J. — Length of antennae 0-070 inch ... 1-77 millimetres. 



Expanse of wings 0-300 x 0-080 ... 7-62 x 2-02 



Size of body 0-310x0-040... 7-87x1-01 



$. — Length of antennae 0*070 inch ... 1*77 millimetres. 



Expanse of wings 0-320x0-085 .. 8-12 x 2-U 



Size of body 0-310x0-042 ... 7-87x1-06 



Head, including rostrum, palpi and antennae black ; rostrum 

 short; first joint of scapus twice the length of the second. 

 Thorax dark fuscous-brown, sometimes almost black with a greyish 

 bloom ; pleurae and humeri sometimes slightly tinged with testa- 

 ceous. Halteres testaceous, the club almost black. Abdomen 



* Though also a character of the Dicranomyice. 



