AKT. 10 THE FAMILY SIMULIIDAE DYAR AND SHANNON 9 



long as antenna ; claws not produced basally ; chitinoiis plates on seg- 

 ments 3, 4, and 5 distinctly reduced in width; all but the last ster- 

 nite completely membranized; stem vein pale pilose. Ovipositor: 

 Rather broad and large but thin and not produced backward, the 

 valv^es broadh^ brown chitinized within, strigate spicular. Cerci 

 quadrate, nearly twice as wide as long, anal lobes conical, as long 

 as the cerci and like them evenly setose and spicular. Genital rod 

 forked, each arm with short chitinous plate with produced corners. 

 (Figs. 12 and 13.) 



Male. — Pile much longer and usuallj^ darker; chitinization of 

 tergites and sternites not greatly reduced. Hypopygium, side piece 

 cylindrical, slightly tapered, a little longer than broad; chitinous 

 wall cut out on each side leaving a basally directed point with narrow 

 bridge. Clasper short, conical, setose with two terminal short claws. 

 Adminiculum broad, smooth, minutely pilose ; no teeth on admin- 

 iculum arms. 



ProsimuliuTii hirtipes (Fries) original^ described from Europe is 

 widespread in Europe and Xortli America. In America it appears to 

 be confined to the region east of the Mississippi and north of the 

 Carolinas. There are allied species found in the AVest. Is is an early 

 spring species. In the vicinity of Washington it may be found as 

 early as March 18 and as late as May 23. P. hirtipes attacks man 

 rarely and does not appear to be a severe pest to livestock. One hun- 

 dred specimens at hand. 



I'Vpe locality. — Unknown. Location of type unknown to us. 



Distrihution. — Connecticut: Roxbury, May 6, 1885 (E. W. Len- 

 dewey). 

 District of Columbia: Washington, April 4, 1895 



(E. A. Schwarz). 

 Labrador: Hawks Harbor, July 20. 1908 (Peary's 



Xorth Pole expedition). 

 Maine: Mount Katahdin. 3,000 feet, August, 1902 



( ). 



Maryland: Plummers Island, April, 1915 (R. C. 



Shannon). Cabin John, April 28, 1912 (J. R. 



Malloch). South Mountains, April 12, 1916 (H. 



L. Parker). Forest Glen, :May 23, 1915 (O. 



Heidemann). 

 Massachusetts: ^Melrose Plighlands, April 23 (D. 



H. Clemons). Holyoke, April 12, 1903 (F. 



Knab). 

 New Foundland: Balena, June 1903 (W. Palmer). 

 Xew Hampshire : Berlin Falls, August 10 ( ) . 



Franconia (A. T. Slosson). Hermit Lake, White 



Mountains (S. H. Scudder). 



361.3—27 2 



