92 Annals Entomological Society of America [Vol. XII, 



Abdomen testaceous, shining; a well marked dorsal stripe extends 

 from the first to the eighth tergite, a lateral fuscous stripe more or 

 less interrupted, extends from the third to the sixth tergite, more 

 accentuated in a darker spot near the anterior angle of the respective 

 segments. Eighth sternite prolonged and narrowed posteriorly, the 

 posterior margin with a broad, rounded emargination which is filled 

 with a whitish membrane ; each angle of the emargination bears a large, 

 triangular appendage, the inner margin of which has a brush of short, 

 dense, golden-yellow hair. Hypopygium (PI. V, Figs. 13 and 14) 

 reddish, testaceous. The ninth tergite about as long as wide, broadly 

 and deeply emarginate, the lateral angles prolonged as digitiform 

 processes, slightly bent downward at the apex ; the upper surface of the 

 tergite with a median, longitudinal carina; viewed laterally, the upper 

 surface appears subangulate about the middle. Ninth sternite short, 

 with a median acute incision. Pleural suture complete, pleural process 

 conspicuous, curved upward and markedly broadened just beyond the 

 base, convoluted, then extending directly caudad and slightly bent 

 outwardly. The outer apical appendages small, ovoidal, fringed with 

 hair; the inner appendages a broad perpendicular lamina, extending 

 above into an acutely pointed and strongly chitinized process; the 

 lower margin strongly bearded with yellow, bristly hair. 



Holotype, cf, Somona County, California, May 21, 1914. 

 Paratypes, 4 9 9 's, topotypic. 



The formation of the hypopygium alone must be depended 

 on for differentiation from allied species. 



Tipula streptocera-pallidocera var. n. 



A specimen in my collection received from Prof. Doane and 

 bearing the label "L. streptocera,'' agrees in all details with 

 the description and other specimens of this species, received 

 or determined by its author, except that the antennas are 

 entirely pale yellowish. The thoracic stripes are ill defined. 



Holotype, cf, Keyport, Washington, July, 1905, (R. W. 

 Doane). 



