CRUSTACEA FROM LAKE VALENCIA, VENEZUELA. 



By A. S. Pearse, 



Of the University of Wisconsin. 



The writer collected in Lake Valencia and its tributaries during 

 July, 1918. The following list includes all the species of crustaceans 

 collected. Thanks are due to Dr. Mary J. Rathbun and to Prof. 

 C. B. Wilson, who identified the the decapods and the argulids, 

 respectively. 



COPEPODA. 



DIAPTOMUS CONIFER Sars. 



This species was abundant in the lake and was taken at various 

 depths in townets on July 18 and 25, 1918. 



CYCLOPS LEUCKARTI Clans, variety EDAX Forbes. 



Taken in townet in open lake at various depths and in the shore 

 vegetation with a Birge net in all places where collections were made. 



CYCLOPS SERRULATUS Fischer. 



Collected among the shore vegetation. 



CYCLOPS PHALERATUS Koch. 



Found in the vegetation alongshore. 



CYCLOPS VIRIDIS Jurine. 



Found in the vegetation alongshore. 



CLADOCERA. 



MOINODAPHNIA MACLEAYH (King). 



This little cladoceran was abundant in the open lake where it was 

 captured with townets, and was found once inshore in a Birge net 

 collection. 



LATHONURA RECT1ROSTRIS (O. F. Miiller). 



A cladoceran, apparently this species, was collected among the 

 shore vegetation with a Birge net, July 25, 1918. 



Proceedings U. S. National Museum, Vol. 59-No. 2381. 



459 



