24 DAVENPORT ACADEMY OF SCIENCES. 



general appearance, except for the green color, they are identical 

 with the last species. 



It seems not at all improbable that the green forms observed in 

 this state as well as Adinophrys picta of L^eidy may be but a vari- 

 ety of Adinophrys sol. 



No illustration of this green variety has been made owing to 

 its close resemblance to Adinophrys sol. 



ACTINOSPH^RIUM Stein. 



Body spherical, of large size, protoplasm granular, differen- 

 tiated into an outer highly vesiculated zone and a denser interior 

 region. Pseudopodia with thick bases, tapering, with axial sup- 

 ports. Nuclei many. 



ACTINOSPH^RIUM EICHHORNII Stein. 



Having the characters of the genus. 



Diameter of the body, 150 microns. (Fig. 41, PI. VI.) 



The body is of granular protoplasm with a well marked and 

 very transparent peripheral region which is highly vesiculated ; 

 usually two or more of these vesicles are contractile exhibiting 

 the same phenomena just before systole as the contractile vesicles 

 of Adinophrys sol. The large, ray-like pseudopodia possess rigid 

 yet flexible axial supports which originate from the inner sur- 

 face of the vesiculated border. 



The inner and more dense region of the body may be almost 

 completely filled with small .spherical nuclei. I have observed 

 individuals possessing more than sixty nuclei. 



The species is not a common one in this state but has been 

 found associated with Adinophrys sol in fresh water. 



Figure 41, Plate VI, illustrates one-half of a typical specimen. 



VAMPYRELLA Cienkowsky. 



Body spherical, capable of amoeboid movements. Pseudopodia 

 of two varieties, capitate and simple, ray-like. 



Vampyrella lateritia Fres. 



Body spherical, granular in appearance, sometimes brick or 

 orange red in color, sometimes colorless. Capitate pseudopodia 

 the more numerous, arising from all points of the periphery. 



Diameter of the body, 30 microns. (Figs. 37-38, PI. VI.) 



