Ai!T. 10 THE FAMILY STMULIIDAE DYAR 'ft.ND SHANNON 31 



Type localities. — Of decorum. ^Martin Fall, Ontario. Type in the 

 British j\[iiseum, examined by the junior 

 author in August, 1925. 

 Ol" vcnustoides., Algonquin, 111. Type presuma- 

 bly in the Illinois State Natural History 

 Laboratory. 

 Distribution. — Alberta: Red Deer, August 2, 1918 (H. G. Dyar). 

 CoLoitADo: Boulder (T. D. A. Cockerell). 



Florida: ( ). 



Illinois: Algonquin, May 3, 1895; June G, 1908; 



October 17, 1894 ( —). 



Maryland: Plummer Island. Api-il 22. 1903 (R. 

 P. Currie) : April 29, 1915 (J. C. Crawford) ; 

 :May 9. 1914 (R. C, Shannon) ; June 8, 11, 1914 

 (Schwarz and Sliannon) ; June 28, 1905 (H. S. 

 Barber) ; November 3, 1901 (H. S. Barber). 

 Near Plummer Island. May 2. 1915, June 3, 

 1914 (R. C. Shannon). 

 Michigan: Pine River, September T, 1896 (II. G. 



Hubbard). 

 Vii:ginia: Dead Run, May 28, June 6-20, 1915 

 (R. C. Shannon). 



SIMULIUM decorum KATMAI. new subspecies 



Differs from deconim in having the legs largely blackish and 

 the fifth tergite less distinctly bluish gray. 



Female hypopygium : As in decorum., but arms of genital rod 

 heavily chitinized outwardly, the tooth very large and broad (figs. 

 56 and 57). 



^lale as in decorum. 

 Type locality. — Katmai, Alaska. 



T//;?.?.— Female, fctratypes 2 females. Cat. No. 28341, U.S.N.M. 

 All of our records are from northwestern North America. 19 

 specimens. 



DistHbution. — Alaska: Skagway, August 1, 1919 (H. G. Dyar). 

 Katmai, July, 1919 (H. S. Hine). Ketchikan, 

 August, 1919 (H. G. Dyar) . Kukak Bay, July 4, 

 1899 (T. Kincaid). 

 Yukon Territory: Careross, July 21, 1919 (H. G. 

 Dyar). White Horse, June 29, 1919 (H. G. 

 Dyar). Selkirk, June 13, 1919 (H. G. Dyar). 



