106 University of California Publications in Zoology [Vol.22 



The following Ploima were only recorded once or twice, or were 



only recognized in living material. 



Aseomorpha ecaudis Perty. 



Asplanehna priodonta Gosse. Once, I. 



Asplanchna sieboldii Leydig. 



Asplaachnopus multicepa Schrank. Once, I and III. 



Diasehiza exigua Gosse. 



Diaschiza gibba Ehrbg. 



Diurella porcellus Gosse. Once, II and III. 



Diurella tenuior Gosse. Twice, I, and once, II and III. 



Euehlanis dilatata Ehrbg. Once, III. 



Filinia cornuta Weisse. Once, II. 



Lecane ungulata Gosse. Once, III. 



Lepadella ovalis Miill. 



Macrochaetus subquadratus Perty. Once, III. 



Monostyla cornuta Miill. 



Monostyla lunaris Ehrbg. 



Mytilina mucronata Miill. 



Notholca longispina. 



Notholca egg, attached. Once, III. 



Notommata aurita Miill. Twice, I, once, III. 



Platyias quadricornis Ehrbg. 



Pleurotrocha petromyzon Ehrbg. 



Rhinoglena frontalis. Once, II. 



Trichocerca endo]>arasitized. Once, II. 



Triehotria curta Voronkov. Twice, II, once, III. 



Scirtopoda 

 Pedalia niira Hudson was found in very small numbers once or 

 twice in fresh material from Stockton Channel but not in regular 

 catches for 1913. 



GASTROTBICHA 



Chaetonotus nodicaudus Voight and another species were each 

 recorded once at Station I. They are known to be present in the 

 locality in larger numbers and are, no doubt, strictly adventitious. 



ENTOMOSTRACA 



Station I Station II Station III Daily Hourly 



Average 560,149 22,022 22,551 1,498,724 83,099 



With the exception of three specimens of Gammarus found at Sta- 

 tion III the Crustacea recorded consisted of Entomostraca. Of this 

 group only the Cladocera and Copepoda were of any importance in 

 our plankton. Entomostraca were recorded in every month of the 

 year at all stations, but the numbers were small everywhere during 

 the first three months and there were some misses at all stations at 



