6 
. GUIDE TO THE CORAL GALLERY. 
High Wall 
Case 
E. end of 
Gallery. 
“ flowers of tan.” The cysts rupture and liberate Amwla-YikQ 
spores (flagellulm), which fuse together to form a plasmodium. 
Didymium , one of the Mycetozoa, is figured in Plate II. in the 
Case. 
Heliozoa or Sun Animalcules. 
The Sun Animalcules are more or less spherical in form and pro- 
vided with fine ray-like pseudopods. They mostly inhabit fresh water 
Actinojphrys sol, the Common Sun Animalcule (Pig. 2), lives 
Fig. 4. 1 
Miliolina tenera, one of the Imperforate Foraminifera. Young 
living animal with expanded pseudopods. A nucleus is seen 
in the innermost chamber. Magnified. (After Max Schultze.) 
amongst weeds in ponds. “It commonly appears as a globular, 
hyaline, foamy, or vesicular body, bristling with delicate rays, C and 
suspended almost stationary in the water” (Leidy). The total 
diameter is about ^ of an inch. The body generally contains, in 
addition to the central nucleus and the contractile vacuole, numerous 
vacuoles and food-balls : the contractile vacuole is usually seen 
emerging from a point on the surface, bursting, and reappearing at 
the same spot (Model 3). Actinophrys swims by means of its 
flexible pseudopods, and when one of these touches some organism, 
the latter is drawn towards the body and engulfed. Well might 
From “ Encyclopedia Britannica,” 
