858 DIPTERA OF AUSTRALIA, 



immediately beyond the tip of the first longitudinal vein, and 

 looking like a cross- vein. 



Ohs. 2. — This and the following species, L. australasice, form a 

 natural group, and might be considered at least a distinct sub- 

 genus. The antennae are long in the male, short in the female ; 

 in L. Lawsonensis the male antennae being more than three times 

 the length of the entire body. The head is broad ; collare incon- 

 spicuous. Male forceps (PI. xxiv. fig. 64) with a serrate, clavate, 

 outer appendage, and an inner arcuated one. Femora ringed before 

 the apex. Wings numerously spotted with brown. Auxiliary 

 vein stopping considerably before the inner end of the second 

 sub-marginal cell ; marginal cross-vein entirely wanting ; first 

 sub-marginal cell short, with a long petiole ; the anterior branch 

 of the second longitudinal vein joining the costa not far beyond 

 the tip of the first longitudinal vein ; second sub-marginal cell 

 longer than first posterior ; third posterior cell longer than second; 

 great cross-vein usually at inner end of discal cell. 



363. LiMNOPHILA AUSTRALASIA, sp.n. (PI. XXIII. fig. 29). 



(J. — Length of antennae 0*190 inch 



Expanse of wings 0*260 x 0*065 



Size of body 0*220x0*035 



^. — Length of antennae 0*070 inch 



Expanse of wings 0.290x0*090 



Size of body , 0*250x0*035 



4*81 millimetres. 

 6*62x1*66 



5*58x0-88 



1*77 millimHres. 

 7*35 X 2*27 

 6*34x0*88 



Head brown, with a yellowish-grey bloom ; rostrum, palpi and 

 antennae brown, the first few joints of latter usually more or less 

 testaceous ; $ antennae not quite the length of entire body, set- 

 aceous, densely clothed with tolerably long, almost erect pubescence; 

 flagellar joints gradually decreasing in length, the incisions between 

 the first seven or eight ochreous ; ^ antenn£e short, scarcely 

 reaching origin of wings if bent back ; flagellar joints sub-elliptical, 



