858 



PROTOZOOLOGY 



Fig. 365. a, Vaginicola leptosoma, X130 (Stokes); b, V. annulata, 

 X170 (Stokes); c, Cothurnia canthocampti, X150 (Stokes); d, C. an- 

 nulata, X340 (Stokes); e, Thuricola folliculata, XllO (Kahl); f, Thuri- 

 colopsis kellicottiana, XllO (Stokes); g, Caulicola valvata, X760 (Stokes); 

 h, i, Pyxicola affinis, X170 (Kent); j, P. socialis, X170 (Kent); k, Platy- 

 cola longicollis, X200 (De Fromentel); 1, Lagenophrys vaginicola, X380 

 (Penard); m, L. patina, X150 (Stokes); n, L. labiata, X340 (Penard). 



T. folliculata (Miiller) (Fig. 365, e). Lorica 127-170// high (Kent) ; 

 160-200/x high (Kahl) ; salt and fresh water. 



Genus Thuricolopsis Stokes. Lorcia with an internal, narrow, 

 flexible valve-rest, adherent to lorica wall and projecting across 

 cavity to receive and support the descended valve; protoplasmic 

 body attached to lorica by a pedicel; on freshwater plants. 



T. kellicottiana S. (Fig. 365,/). Lorica about 22G> long. 



Genus Caulicola Stokes. Similar to Thuricola; but lorica-lid at- 

 tached to aperture; fresh or brackish water. 2 species. 



C. valvata S. (Fig. 365, g). Lorica about 50/x high; stalk about 1/2; 

 body protrudes about 1/3 when extended; brackish water. 



Genus Pyxicola Kent. Body attached posteriorly to a corneous 

 lorica; lorica colorless to brown, erect, on a pedicel; a discoidal 

 corneous operculum developed beneath border of peristome, which 

 closes lorica when organism contracts; fresh or salt water. Many 

 species. 



P. affinis K. (Fig. 365, h, i). Lorica about 85m long; in marsh 

 water. 



