NO. 30 



SMITHSONIAN EXPLORATIONS, [OI2 



from all these reservoirs and the stream- supplying them, from the 

 embryonic Gatun Lake, its adjacent swamp-, and from the waters 



Fig. 80. — Rocky [sland in Panama Bay, showing Frigate birds. Planl 

 ton collections were made near this spot. Photograph by Marsh. 



Fig. 81. — Collecting Entomostraca in Black Swamp, Canal Zone. I his locality 

 will be covered by Gatun Lake. Photograph by Marsh. 



of the Chagres and Trinidad Rivers, as well as from the streams 

 and ])(ki1s df the southern slope, and in the harbors "I Colon and 



