152 



from North America, although Michaelsen ('oo, p. 96) regards F. 

 parva Moore as a synonym of P. bulbosa Rosa. The North American 

 species with their type locahties are as follows : F. alba Moore (Phila- 

 delphia, Pa.), F. agricola Moore (Philadelphia, Pa.), F. longa Moore 

 (Philadelphia, Pa.), F. parva Moore {^F. bulbosa Rosa?) (Philadel- 

 phia, Pa.), F. agilis Smith (Havana, 111.), F. iirma Smith & Welch 

 (Urbana, 111.), F. tenera Smith & Welch (Urbana, 111.), F. harrimani 

 Eisen (Mountain View, Calif.), F. fuchsi Eisen (Santa Cruz, near 

 Boulder Creek, Calif.), F. johnsoni Eisen (Santa Barbara, Calif.), F. 

 santceroscB Eisen (Santa Rosa, Sonoma Co., Calif.), F. santccbar- 

 barcr Eisen (Santa Barbara, Calif.), F. macgregori Eisen (Napa Co., 

 Calif.), F. sonorcc Eisen (Sonora, ^Mexico), F. popofiana Eisen 

 (Popof Island, Alaska), and F. calif ornica Eisen (San Francisco, 

 Calif.). Three new species are described in the following pages, 

 namely, F. doiiglasciisis, F. oconccnsis, and F. siiiia. 



Key to the Species of Feiderica kxowx to occur ix 

 North America 



SpermathecEe without diverticula. 

 Posterior margin of brain convex. 



Spermathecae do not connect with digestive tract sonora; 



SpermathecEe connect with digestive tract. 



Peptonephridia simple and unbranched ; brain about twice as 



long as wide sima 



Peptonephridia with four to six branches projecting from a 



common base ; brain almost circular fuchsi 



Posterior margin of brain truncate or concave. 



Peptonephridia simple and unbranched parva 



Peptonephridia with distinct branches. 



Length over 10 mm.; somites over 50: dorsal pores begin on 



VI ; dorsal vessel arises in XXII alba 



Length under 10 mm.; somites not more than 50; dorsal pores 



begin on VII. 

 Dorsal vessel arises in XIV ; peptonephridia short, each with at 



least two branches ; brain deltoid, posterior margin almost 



straight, anterior margin conical harrimani 



13 (12) Dorsal vessel arises in XIII; peptonephridia thick and compact, 



with the free end frayed; brain with the posterior margin 

 slightly concave, anterior margin convex johnsoni 



14 (i) Spermathec?e with diverticula. 



15 (22) Spermathecae each with two diverticula. 



