232 



PROTOZOOLOGY 



Fig. 105. a, Dolichodinium lineatum, X670 (Kofoid and Adamson); 

 b, Goniodoma acuminata, x340 (Stein); c, Gorumlax polyedra, X670 

 (Kofoid); d, G. apiculata, x670 (Lindemann); e, Spiraulax jolliffei, 

 right side of theca, X340 (Kofoid) ; f, Dinophysis aciita, X580 (Schiitt); 

 g, h, Oxyphysis oxytoxoides, X780 (Kofoid); i, Phytodinium simplex, 

 X340 (Klebs); j, k, Dissodinium lunula: j, primary cyst (Dogiel); 

 k, secondary cyst with 4 s warmers (Wailes), X220. 



summer plankton, July-September, when it causes local out- 

 breaks of 'red water,' which extend along the coast of southern 

 and lower California" (Kofoid, 1911). 



G. apiculata (Penard) (Fig. 105, d). Ovate, chromatophores 

 yellowish brown; 30-60^ long; fresh water. 



Genus Spiraulax Kofoid. Bi conical; apices pointed; sulcus not 

 reaching apex; no ventral pore; surface heavily pitted; salt water. 



