June, 1 916.] Alexander: New Limnopiiiline Craxe-Flies. 12-t 
Male. — Length, 6.2-6.8 nun. ; wing 6.8-7.6 mm. 
Rostrum and palpi dark brownish black, grayish pruinose. Antennae 
moderately elongated, dark brownish black, the segments gray pruinose ; seg- 
ments of the flagellum oval. Head clear light gray, with numerous setigerous 
punctures on the sides. 
Thorax and pleura clear light gray without stripes. Halteres light yellow. 
Legs with the coxse and trochanters reddish yellow ; femora dark brownish 
black, the base more yellowish ; tibiae and tarsi dark brownish black. Wings 
whitish subhyaline, the stigma oval, dark brown ; veins dark brown. Venation 
as in plate i, figs. 8, 9: the venation somewhat variable as in the related 
eastern species, L. lenta O. S. ; Sc ending just before the tip of the sector; 
Rs shorter than or equal to R^+s, usually strongly arcuated to angulated at 
the origin ; crossvein r on /?2+3. at the fork or on R-^ ; crossvein r-iti arcuated ; 
basal deflection of Cu^ at the fork of M to one third the length of cell ist Mo. 
Abdominal tergites dark gray, the hypopygium reddish yellow. 
Habitat. — Colorado, New Mexico. 
Holotype, J*, Platte Canon, Colorado; July 30, 1914; E. J. Oslar. 
Paratype. J^, Colorado (ex collection C. V. Riley). 
Paratype, ^, White Mts., New Mexico, South Fork of Eagle 
Creek, alt. 8000 feet, August 18; C. H. T. Townsend. 
This species differs from the related Eastern species, L. lenta 
O. S. in its gray coloration, that of Icnia being yellow or yellowish. 
Limnophila osborni Alexander. 
1914 Limnophila osborni Alexander; Proc. Acad. Nat. Sci. Philad., 1914, 
p. 596, pi. 25, fig. 6. 
This interesting late summer crane-fly seems to be northern in its 
distribution. A male and a female from Price Co., Wisconsin, 
August 29, 1897, as part of the W. M. Wheeler collection, is in the 
American Museum of Natural History. The female sex has never 
been characterized and the specimen is made the allotype : 
Sex 9, similar to the male but larger; the abdominal tergites brown, in- 
distinctly trivittate with darker ; ovipositor with the tergal valves upcurved, 
elongated, slender, subacute, the sternal valves split into hair points at the 
tips. Length, 9.2 mm. ; wing, 9 mm. 
The allotype is in the collection of the American Museum of 
Natural History. 
Trichocera (Diazosma) subsinuata new species. 
Differs from the described species of the genus in the subsinuatae course 
of the second anal vein ; wing-veins long-hairy. 
Male. — Length, 7.3 mm.; wing, 9.2-10 mm. 
Female. — Length, 8-9 mm.; wing, 9-1 1.4 mm. 
