VAMPYKELLA. 4:5 



on the pseudopodal rays, and densely pervaded with 

 minute spicules, tangentially arranged. Pseudopodal 

 rays very long, numerous, straight, simple, finely 

 granulated. 



Raphidiophrys viridis. 



Single, or more frequently in closely aggregated groups 

 of variable number. Individuals green or colorless. 

 Spicules thickly distributed, tangentially arranged, ex- 

 tending outwardly on the bases of the pseudopodal rays, 

 comparatively coarse and slightly bent. Diameter about 

 g-J^ of an inch (Archer), 90//, Leidy. 



Hob. Ditches, rivers. 



jRdphidiophryS degans. SYN. : A. oculata, sol, Carter; . 

 elegans, H. and L., Leidy, Archer; Sephcerastrum conglobatum, Greeff. 



Single, or usually in groups of two or three dozen or 

 more, united by narrow bands. Individuals bright-green 

 from the presence of chlorophyll corpuscles, or colorless. 

 Spicules delicate, in the form of semicircles, tangentially 

 arranged, with their convexity directed toward the body 

 and the pseudopodals rays. Contractile vesicle changes 

 its position. Diameter, 32// to 40//; rays, 240//; length 

 of semicircular spicules, 6/*. 



Hal). Springs and ponds among aquatic plants. 



GENUS IY. VAMPYKELLA. 



SYN. : Amceba, Fresenius ; Vampyrella, Cienkowski. 



Animal usually Actinophrys-like, with a soft, sphe- 

 roidal body, capable of amoeboid variations of form ; 



