96 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



SCATOPSE VARICORNIS, new species. 



Head and bod}' black, mesonotum somewhat polished, antennae 

 about as long as the head and thorax, black, joints three to six bright 

 yellow, apex of the last joint with a white reflection, joint three 

 slightly longer than wide, the succeeding joints becoming successiveh' 

 shorter except the last one; legs dark brown, extreme ends of femora, 

 apices of tibial and whole of tarsi yellow, broad bases of tibiae white; 

 wings grayish hyaline, yeins brown, apex of third yein near three- 

 fourths length of wing, penultimate section of fourth yein about two- 

 thirds as long as the upper fork of this yein, the forks gradual!}' 

 diyerging from each other for a short distance, at which point the 

 upper fork is strongly bowed upward, then extends nearly parallel 

 with the lower one nearl}' to the wing-margin, where the}' diyerge 

 rather strongly from each other, tifth and sixth yeins distinct, the 

 latter strongly sinuous; length, 1,5 mm. A female specimen collected 

 by ]VIr. Th. Pergande. 



llalj'dat. — Washington, District of Columbia. 



Type.—Q^i. No. 6181, U.S.N.M. 



Family SIMULID.E. 



SIMULIUM FULVUM, new species. 



Male. — Head and its moiubcrs dark brown, occiput coyered with 

 rather long goklen-yellow hairs, thorax reddish yellow, opaque, sides 

 of scutellum and mesonotum in front of it bearing mariy rather long 

 goklen-yellow hairs; abdomen dark blown, opaque, on each side of 

 the liase is a large cluster of golden-yellow hairs more than half as 

 long as the abdomen; legs dark yellow, apices of tibias and whole of 

 tarsi pale brown; halteres dark yellow; wings hyaline, yeins along 

 costa brown, the others nearly hyaline. 



Female. — Diflers from the male as follows: Head, except upper part 

 of occiput and the front, dark yellow, base of antenna? also yellow, 

 hairs of occiput short and sparse; abdomen yellowish brown or dark 

 yellow, usually changing into brown at the apex, the hairs at its base 

 less than one-third as long as the al)domen; tarsi and tibite usually 

 yellow. 



Length, about 3 mm. One male and ton females. 



Jldhitat. — Bear Paw Mountains, Montana (September 3. H. G. Hub- 

 bard); Custer County, Colorado (T. D. A. Cockerell); iSIount Cheam 

 (August 7, J. Fletcher). Lowe Inlet (June 3, T. Kincaid) and Lag'gan 

 (H. F. Wickham), British Columbia; Sitka (June 16), Virgin Bay 

 (June 26), and Kukak Bay (July 4, T. Kincaid), Alaska. 



Tf/pe.—Ciit. No. 6182, U.S.N.M. 



1 formerly mistook this species for Walker's ochraceuin, but the 

 latter, besides ])eing considerably smaller, has whitish pruinose yittai 

 on the mesonotum and bicolorous middle and hind tarsi. 



