242 Wisconsin Academy of Sciences, Arts, and Letters. 
Cyclops prasinus Fischer. Lakes Amatitlan and Atitlan, San 
Cristobal. 
Cyclops phaleratus Koch. Los Amates. 
Cyclops bicolor Sars. Mangrove swamp at San Jose, Mexico 
City. 
Cyclops fimbriatus Fischer. Puerto Barrios. 
OLADOCERA. 
Diaphanosoma brachyurum Lievan. Puerto Barrios, lake 
Atitlan, Mexico City. 
Pseudosida bidentata Herrick. Puerto Barrios. 
Pseudosida tridentata Herrick. Los Amates. 
Parasida ramosa Daday. Puerto Barrios. 
Daphnia longispina var. hyalina Leydig. Lakes Amatitlan, 
Atitlan, and Coatepeque. 
Daphnia pulex He Geer. Lake Atitlan. 
Simocephalus vetulus 0. F. Mueller. Mexico City. 
Simocephalus serrulatus Koch. Los Amates. 
Ceriodaphnia pulchella Sars. Lakes Amatitlan, Atitlan, Ilo- 
pango, and Coatepeque, and Mexico City. 
Ceriodaphnia lacustris Birge. Lake Amatitlan. 
Bosmina longirostris 0. F. Mueller. Lakes Amatitlan and 
Ilopango, Mexico City. 
Bosmina obtusirostris Sars. Lake Atitlan. 
llyocryptus spinifer Herrick. Lake Atitlan, Mexico City. 
Macrothrix laticornis Jurine. Lake Atitlan. 
Macrothrix rosea Jurine. Puerto Barrios, Los Amates, Mexico 
City. 
Eurycercus lamellatus 0. F. Mueller. Mexico City. 
Camptocercus rectirostris Schoedler. Lake Atitlan. 
Kurzia latissima Kurz. Mexico City. 
Alona costata Sars. Lake Atitlan, Mexico City. 
Graptoleberis testudinaria Fischer. Lake Atitlan, Mexico 
City. 
Dunhevidia setigera Birge. Mexico City. 
Pleuroxus denticulatus Birge. Mexico City. 
Chydorus globosus Baird. Mexico City. 
Chydorus sphaericus 0. F. Mueller. Lakes Amatitlan and 
Atitlan, Mexico City, Puerto Barrios. 
