1916.] NATURAL SCIENCES OF PHILADELPHIA. 531 
XXVII, fig. 44): basal deflection of /^4+6 very short or obliterated, 
the cross- vein r-m being correspondingly longer, arcuated; cell M, 
short, about one-half as long as its petiole. 
Abdomen short, the tergites dark brown, the hypopygium even 
darker. Male hypopygium (Plate XXXI, fig. 94) powerfully 
enlarged, the pleurites not conspicuously elongated ending in a 
rounded ventral lobe that is covered with numerous hairs; the single 
pleural appendage a powerful curved arin that is rather blunt at the 
tip, with numerous long hairs on the inner face and at the apex 
where they are exceedingly numerous and spinous, at the extreme 
apex very tiny. 
Habitat. — British Columbia. 
Holotype, d" , Rogers Pass, British Columbia, August 9, 1915 
(Bradley) . 
Allotype, 9 , in copula with the type. 
Type, mounted in balsam, in the collection of Cornell University. 
This interesting crane-fly is dedicated to the collector, Dr. J. 
Chester Bradley, of Cornell University, to whom I am indebted for 
assistance and advice upon many subjects. 
Tribe Limnophilini. 
LIMNOPHILA Macquart. 
Limnophila Macquart; Suit a Buffon, vol. 1, Histoire Naturelle Dipteres, 
p. 94 (1834). 
Limnophila irrorata Johnson. 
Limnophila irrorata Johnson; Proceedings of the Boston Society of Natural 
History, vol. 34, No. 5, pp. 127, 128, PI. 16, fig. 17 (1909). 
This interesting species was described from the unique female 
found floating dead in a water receptacle at Riverton, New Jersey, 
and had apparently not been found since that time. The fly was 
rediscovered in 1915 while the author was searching for Venus 
fly-traps, DiotKEa muscipula Ell., near Jacksonville, North Carolina. 
The male sex is here described and the specimen made the allotype : 
Mafe.— Length 7.6-7.8 mm.; wing, 7-7.3 mm. Agrees closely 
with the female, but the head a little more brownish; petiole of cell 
R2 of the wings very short, not as long as the r-m cross-vein; basal 
deflection of Cui inserted beyond mid-length of cell 1st AI2. 
Allotype, d^, Camp Perry, Onslow County, North Carolina, July 
9, 1915 (Alexander). 
Allotype in the collection of the author. 
The following notes on the natural habitat of the species may b& 
given: 
