AOTINOPHRYS SOL. 21 



Feritricha sol 



BoRY DB St. Vincent Encycl. metli., Zoophytes, 1824, p. 614. 

 Actlnophrys sol 



Ehrenbbeg Abh. Akad. Berl. 1830, p. 42, pi. ii, f. 4. 

 Lbidy Rep. U.S. Geol. Surv. XII, 1879, p. 235, pi. xl. 

 Penard Heliozoaires, 1904, p. 98, ff. 1 and 2. 

 A. difformis 



Khrbnberg Abh. Akad. Berl. 1831 (1832), p. 102. 

 A. marina 



DujAEDiN Hist. Nat. Zoopli. Infus. 1841, p. 264, pi. i, f. 18. 

 A. stella 



Perty Z. Kennt. Kleinster Lebensformen, 1852, p. 160, pi. viii, f.5. 

 A. oculata 



Stein Die Infusionsthiere auf Entw. unters. 1854, p. 157, pi. v, f . 25. 

 A. Eichhornii 



Clapaeede Arch. Anat. Phys. 1854, p. 898, pi. xv. fE. 1-6. 

 A. tenuipes 



Clapaeede et Lachmann l^tudes s. 1. Infusoires. Mem. Inst. 

 Nation. Genevois, YI, 1859, p. 451, pi. xxii, f. 4. 

 A. fissipes 



Lachmann Yerh. nat. Yer. preuss. Rheinlande, XYI, 1859, Sitz 

 Ber. p. 61, 

 A. longipes 



Lachmann T.c. p. 61. 

 A. tunicata 



Lachmann T.c. p. 93. 

 A. limhata 



Lachmann T.c. p. 93. 

 A. paradoxa 



Oaetek Ann. Mag. Nat. Hist. (3), XIII, 1864, p. .34, pi. ii, f. 20. 

 A. picta 



Lbidy Rep. U.S. Geol. Surv. XII, 1879, p. 241, pi. xlvi, f. 4. 

 A. alveolata 



ScHBwiAKOFF Mem. Acad. St. Petersb. (7), XL,I, No. 8, 1893, 

 p. 8, pi. i, f. 4 

 J Monohia solituria 



SCHBWIAKOFF T.C. p. 7, pi. i, f. 3. 



Body spherical witli a fine membranous investment ; 

 ■ectoplasm containing numerous large vacuoles ; endo- 

 plasm granular, colourless, containing numerous small 

 vacuoles ; nucleus large, placed centrally in the body ; 

 contractile vesicle large, usually single ; pseudopodia 

 radial, numerous, long, attenuate, each containing a 

 rigid axis arising from near the nucleus ; reproduction 

 usually by division with or without previous encyst- 

 men-t or by syngamy of two individuals within a cyst ; 

 habit usually solitary but may be colonial especially 

 when young. 



Diameter of body when mature about 40 ju, to 50 /u, ; 



