April, 1920] Crane- Flies of Alaska 195 



Dicranomyia aquita Dietz. 



1915 Dicranomyia aquita Dietz; Can. Ent., Vol. 47, pp. 331, 332. 



A few specimens of both sexes from Savonoski, Naknek 

 Lake, July, 1919, and one from Katmai, August, 1917. The 

 species had hitherto been known only from the types taken in 

 the vicinity of Great Slave Lake. 



Dicranomyia melleicauda Alexander. 



1917 Dicranomyia melleicauda Alexander; Can. Ent., Vol. 49, pp. 22, 23. 



A single female of this autumnal species was taken on 

 Kodiak Island in September, 1919 (Jas. S. Hine). The species 

 had hitherto been known only from the type-locality (Col- 

 orado). 



Dicranomyia duplicata Doane. 



1900 Dicranomyia duplicata Doane; Journ. N. Y. Ent. Soc., Vol. 8, pp. 185, 186, 

 pi. 7, fig. 12. 



One female specimen from Katmai, July, 1917. 



Tribe Eriopterini. 



Genus Erioptera Meigen. 

 Erioptera katmai, sp. n. 



General coloration black, dusted with gray; wings of normal shape, 

 yellowish gray, veins dark brown. So more yellowish; cell 1st M2 open. 

 Anal veins divergent. 



Female. — Length, 7 mm.; wing, 7 mm. 



Rostrum and palpi black, the former dusted with gray. Antenna 

 black, the basal flagellar segments short-cylindrical, the distal segments 

 oval. Head black, dusted with gray. 



Thorax black, dusted with brownish gray, the type specimen badly 

 rubbed. Halteres conspicuously light brownish yellow. Legs with the 

 coxse, trochanters and femora black, the tibi« and metatarsi brown, 

 tipped with black, the remaining tarsal segments black. Wings of 

 almost normal shape and size, yellowish gray, the stigmal region but 

 little darker; veins dark brown, Sc yellow. Venation: Sci ending just 

 before r; that section of R2 before r about equal to R2+3; cell 1st M2 

 open; 2nd Anal vein straight. 



Abdomen dark, sparsely pruinose and provided with an abundant, 

 short, appressed, golden yellow pubescence. Ovipositor with the valves 

 horn-colored, the tergal valves slightly upcurved, compressed, the tips 

 subacute, the sternal valves shorter, straight, the tips acute. 



Habitat. — Alaska. 



Holotype, 9 , Savonoski, Naknek Lake, June, 1919. (Jas. 

 S. Hine). 



