NATURAL HISTORY. 
CLASS If. ACALEPHA. 
With a soft and generally gelatinous skin—no distinct — 
cavity for stomach and intestines. 
ACTINEA. [. MesempryANTHEMUM. Tur- 
ton’s Brit. Fauna, p. 131. and Syst. Nat. v. 4. p. 
104. Of frequent occurrence adhering to rocks 
—when contracted hemispherical. 
2. A. Crasstcornis. Turton’s Brit. Fauna, 
p. 1380. Frequent in crevices of rocks, &c. 
3. A. Betuis. Brit. Fauna, p. 131. The 
Sea Daisy. A gregarious species. 
4, A. Drantuus. Brit. Fauna, p. 131. Rocky 
pools near the low water mark. 
MEDUSA. 1. Cruciata. Brit, Fauna, p. 
139. Syst. Nat. v. 4. p. 122. 
2. M. Fasca. Syst. Nat. v. 4. p. 123. Borl. 
Cornw. p. 256. t. 25. (URTIcA MarRINA.) 
3. M. Purpurea. Borl. Cornw. t, 25. fig. 9. 
Frequent. 
CLASS JIT. ZOOPHYTES. 
The body mostly compound and assuming plant like 
Sorms—the mouth surrounded by a circle of tentacult. 
