AHT. 10 THE FAMILY SIMULIIDAE DYAB AND SHANNON 17 



EUSIMUUUM MUTATXJM (Malloch) 



Prosimulium mutaUim Malloch, U. S. Dept. Agr., Bur. Ent., tech. ser. No. 

 26, 1914, p. 20. 



The dark color of body and legs, the simple claws, the prominent 

 apical projection of the hind basal tarsus, the absence of a dorsal 

 incision on the following joint and the unusually long spurs of the 

 hind tibiae easily identify this species. 



Ovipositor: Cerci rounded quadrate, setose. Anal lobes narrow 

 behind cerci, with a distinct setose lobe below cerci, expanded 

 roundedly and transparent below with about 5 short spines from 

 tubercles. Forks of genital rod quadrately expanded with short 

 irregular teeth, evenly pale chitinized. (Figs. 34 and 35.) 

 One hundred and ten specimens at hand. 



Type locality. — Glassboro, N. J. The type is in the U. S. National 

 Museum, Cat. No. 15404, U.S.N.M. 



Distribution. — Illinois: Meredosia, May 28, 1917 ( ). 



Indiana: La Fayette, May 4 (J. M. Aldrich), 

 Maryland : Plummers Island, April 16, 1915 (K. C. 



Shannon). 

 MissouBi: St. Louis, April 6, 1904 (W. V. Warner). 

 New Jersey: Glassboro, March 28, 1910 (C. T. 

 Greene). Riverton, May 5, 1924 (H. C. Hal- 

 lock). Pemberton, April 22, 1914 (H. B. Scam- 

 mell). lona, April 20, 1903 ( ). James- 

 burg, April 30, 1911 ( ). Paterson, May 



3( ). 



Virginia : Dead Run, Fairfax County, April 11, 

 1914, April 23, 1915 (R. C. Shannon"). 



EUSIMULIUM MUTATUM PERMUTATUM, new race 



Similar to mutatuni Malloch, but in the female the forks of the 

 genital rod have a row of ragged teeth outwardly, and the end of 

 the plate is darkly chitinized. (Fig. 36.) 



Type locality. — Prince Rupert, British Columbia. 



Type. — Female, paratypes 5 females. Cat. No. 28332, U.S.N.M. 



89 specimens before us, all females. 

 Distribution. — Alaska : Camp 327, Alaska Eng. Comm. July 13, 

 1919 (J. M. Aldrich), Katmai, July, 1917 (J. S. 

 Hine). Cape Fanshaw, June 22, 1919 (H. G. 

 Dyar). Ketchikan, June 8, 1919 (H. G. Dyar). 

 Sitka, June 16, 1899 (T. Kincaid). Virgins 

 Bay, June 26, 1899 (T. Kincaid). Yakutat, 

 June 21, 1899 (T. Kincaid). 

 3613—27 3 



