36 PROCEEDINGS OF THE NATIONAL MUSEUM vol.69 



Type locality. — Colorado, exact locality not stated. Type in U. S. 



National Museum, Cat. No. 10381, U.S.N.M. 

 Distribution. — Colorado: (C. P. Gillette). 



New Mexico : Pecos, June 28, 1905 % (M. Grabham) . 



SIMULIUM NOTATUM Adams 



Simulium not a turn Adams, Kans. Univ. Sci. Bull., vol. 2, 1904, p. 434. 



A very small species usually pale yellow with a remarkably arched 

 mesonotum; legs almost entirely yellow except the dark fore tarsi; 

 antennae almost entirely yellow. Female hypopygium. Cerci 

 rounded, weakly infuscated. Anal lobe very pale, a sharp projec- 

 tion below cerci, drawn out ventrally to an angular point which is 

 finely hirsute. Genital rod as in (/nseu?n but weakly chitinized. 

 (Figs. 88 and 89.) 



Male hypopygium. Side pieces quadrate, a little longer than 

 broad ; clasper tapered, uniform, moderate, a spine at tip. Adraini- 

 culum broad, arched, membranous, basal prongs short and slender. 

 Adminiculum anns with a long row of long and short teeth, lateral 

 expansion weak but rather large. (Figs. 117 and 118.) 



Four specimens. 



Type locality. — Williams Fork, Ariz. Type presumably in the 

 collection of the University of Kansas. 



Distribution: — New Mexico: Las Cruces, June 25, 1895 (T. D. A, 

 Cockerell). 

 Texas: Devil's River, May 6, 1907 (F. C. Pratt). 



SIMULIUM VENATOR, new species 



Mesonotum entirely light pollinose except for a distinct brownish 

 median stripe, scutellum yellowish; tergites 3, 4, 5, and 6 with 

 central black spots; legs mostly yellowish. Female hypopygium. 

 As in distinction, but the ventral process of the ninth segment is 

 shorter, being less than the length of the body of the sclerite. (Figs. 

 92 and 93.) . 



Male hypopygium as in distinctum. 

 Type locality. — Reno, Nev. 



2'ype. — Female, allotype male, paratypes 13 females. Cat. No. 

 28343, U.S.N.M. 



Distribution. — California: Inyo County (A, Davidson). 



Idaho: Idaho Falls, July 18, 1922 (H. G. Dyar). 



Moscow, June 16, 1910 (J. M. Aldrich). 

 Montana: Great Falls, July 7, 1921 (H. G. Dyar). 

 Nevada: Reno, July 7, 191G (H. G. Dyar). Steam- 

 boat, September 3, 1915 (H. G. Dyar). 



