HYALOLAMPE. 49 



than the spirious rays. Exterior envelope of the body 

 appearing like an atmosphere of exceedingly minute 

 bacterium-like particles, sometimes absent. Diameter, 

 48/j. to 100// ; length of furcate spines, 20/* to 60//. 

 Hah. Same as Actinophrys and Actinosphcerium. 



Acanthocystis f 



Spinous rays numerous, exceedingly delicate ; emanat- 

 ing from lenticular disks at the surface of the body, and 

 sharply pointed at the distal end. Enveloping layer of 

 protoplasm finely granular, sometimes absent. Pseudo- 

 podal rays longer than the former. Diameter, 36^ to 

 48/e. 



Hob. Among aquatic plants in ponds and ditches. 



A canthocystis f 



Body spherical, composed of a basis of granular proto- 

 plasm with a central nucleus, with green and colorless 

 corpuscles, or colorless ones only. Spinous rays numer- 

 ous, short, pin-like. Diameter, 39^ to 



Hob. Among floating algae. 



GENUS VIII. HYALOLAMPE. 



SYN. : ffyalolampe, Greeff ; Pompholyxophrys, Archer. 



Animal spherical, composed of a finely granular proto- 

 plasmic mass, mingled with variable proportions of 

 colored granules and vacuoles, with a central nucleus. 

 Body invested with a thick layer of loosely coherent, 

 minute, clear, silicious globules. Pseudopods few, 

 radiant, exceedingly delicate, filamentous, not granular. 



