June, I9i6.] ALEXANDER : NeW LiMNOPHILINE CrANE-FliES. 125 



Rostrum and palpi dark brown. Antennae of the male not so elongated 

 as in typical Trichocera, densely hairy, dark brown, the basal segments some- 

 times yellowish but more often uniform in color. Head small, depressed, 

 light brown. 



Pronotum prominent, the scutellum conspicuously light yellow, the scutum 

 brown, with numerous long black hairs on either side of the median line. 

 Mesonotum brown without stripes, scutellum and postnotum more yellowish, 

 somewhat pollinose. Pleura brown, the dorsopleural and metapleural regions 

 more yellowish. Halteres light brown. Legs with the coxse and trochanters 

 dull yellow ; femora brown ; tibiae and tarsi dark brown. Wings very broad, 

 infumed with dusky ; veins dark brown, densely long-hairy. Venation (see 

 plate I, fig. lo) as in typical Trichocera but the second anal vein not recurved 

 into the anal angle of the wing, subsinuate, in this respect differing from the 

 described American forms. n 



Abdomen dark brown. 



Habitat. — Northern United States and Canada. 



Holotype, J*, Hall Valley, near Platte Canon, Colorado; August 

 II, 1915 ; E. J. Oslar. 



Allotype, 5, topotypic. 



Paratypes, 4 J'J, topotypic ; J, Waubamick, Parry Sound, Ontario, 

 June 13, 1915; H. S. Parish; J*, Woodworths Lake, Fulton Co., New 

 York, June 15, 1914; C. P. Alexander. 



Types in the collection of the author, a paratype in the collection 

 of Dr. W. G. Dietz. 



This generalized form is very interesting in the course of the 

 second anal vein of the wings. The range of the species is northern, 

 presumably of the Canadian life-zone. 



Explanation of Plate VIII. 



Fig. I. Wing of Limnophila alleni Johnson. 



Fig. 2. Wing of Limnophila marchandi n. sp. 



Fig. 3. Wing of Limnophila miindoides n. sp. 



Fig. 4. Wing of Limnophila niunda Osten Sacken. 



Fig. 5. Wing of Limnophila terebrans n. sp. 



Fig. 6. Wing of Limnophila barberi n. sp. 



Fig. 7. Wing of Limnophila terrcc-novcr n. sp. 



Figs. 8, 9. Wings of Limnophila oslari n. sp. 



Fig. 10. Wing of Trichocera {Diazosma) subsinuata, n. sp. 



