414 OHIO BIOLOGICAL SURVEY 



formed of numerous elevations apparently developed as short 

 hairs; flagellum 1-1 1/2 times length of body. 



L. 22-70^. D. 12-20;u. 



Distribution, cosmopolitan. In stagnant water generally in 

 company with Eugleva. The presence of the rod-like organ serves 

 to distinguish the species from members of the genus Astasia. 



Jennings in his study of the Protozoa of Lake Erie noted 

 under the name of Astasia tridiophora Ehrb., a form which may 

 be referred to this species. Conn in The Protozoa of Connecticut 

 suggests that the extreme variation in the forms indicates several 

 species in the genus. 



2. P. granulifera Penard (Fig. 3, PI. XXIV). 



Elongately spherical ; periplast covered with granules ; flagel- 

 lum 21/2-3 times length of body. 

 L.VlS/^. D.(?). 

 Distribution, Europe. Stagnant pools. 



5. Gen. URCEOLUS Meresch. 



Form flask shaped with contracted neck ; decidedly metabolic ; 

 posterior end rounded ; anterior end forming a funnel shaped peri- 

 stome extending into a pharynx and reaching to the posterior third 

 of the body ; flagellum somewhat longer than body ; rod-like organ 

 present; pellicula either striate spirally or smooth surrounded with 

 mucous containing minute for^^ign substances; principal vacuole 

 with a small accessory contractile vacuole and with a long excre- 

 tory canal ; movement creeping. Four species. 



Habitat, fresh water and marine. 



Distribution, cosmopolitan ( ?) . 



TABLE OF SPECIES. 



Ai Periplast without a gxlatinous layer in which is imbedded 

 numerous minute granules of sand. 

 Bi Periplast striated. 



C Posterior end with a short tip; prominent spiral 



carinae not present 1. U. cyclostomus 



C- Posterior end developed into an elongate tip; sev- 

 eral prominent spiral carinae . . . 2. U. costatus 

 B- Periplast not striated . . . . . 3. U. alenizini 



A- Periplast with gelatinous layer in which are imbedded 



numerous minute granules of sand . . . . 4. U. sabulosus 



