36 University of California Publications in Zoology [Vol.22 



Gloeocapsa conglomerata Kiitz. 



Station I Station II Station III Daily Hourly 



Average 13,685 4,438 11,015 191,027 49,811 



Kecorded only in July and August at all stations. Identification 

 not positive. Abundant through daily and hourly series and in con- 

 siderable numbers for the few times taken in the regular series. 

 However, not an important factor so far as these catches indicate. 

 Losses through net probably heavy. 



Gloeocapsa spp. ^.^ ^.^ sutionIU Daily Hourlv 



Average 197,400 141,594 181,426 520,660 539,132 



Probably several species are included under this heading. They 

 are found at all stations throughout the year though most abundant 

 in July and August. Losses through the net were probably very 

 heavy and the genus must play an important part in local waters. 

 Identification considered probable though some confusion affected 

 the count at times. 



Gomphosphacra aponina Kg. 



Station I Station II Station III Daily Hourly 



Average 7,856 8,968 14,485 726 36,620 



Identification uncertain. Occurrence at irregular intervals 

 throughout the year at all stations. Numbers small. 



Inactis tincioria Agardh 



Station I Station II Station III Daily Hourly 



Average 532,790 215,653 594,302 103,7!i2 



Identification uncertain. None recorded until August. Very few 



after October at any station. Numbers large while present. Heavy 



loss through net probable. Evidently of considerable importance in 



the plankton while present. 



Merismopcdium glaucus Ehrbg. 



Station I Station II Station III Daily Hourly 



Average 89,512 5,117 6,992 413 210 



Identification satisfactory. Losses through net very heavy. Num- 

 bers fairly large in November and December. Rarely recorded earlier 

 in year. Small size makes it easy to overlook even when present. 



Microcystis sp. 



Station I Station II Station III Daily Hourly 



Average 44,240 64,S90 43,646 166,545 364,169 



Identification satisfactory. Count probably too low on account of 

 confusion of some colonies with other forms. Found occasionally 



