NOs Ly) SMITHSONIAN EXPLORATIONS, IQI0 4I 
Before returning, Mr. Henderson and Dr. Bartsch visited the 
“Luis Lazo” region in the extreme western part of the Sierra in 
order to supplement collections hurriedly made there several years 
ago. 
With the completion of the last few items upon the comprehensive 
program of collecting in western Cuba, the Museum is now in 
possession of sufficient material for a thorough study of the special 
fauna of that exceedingly interesting region. 
Fic. 41.—Bird Key Reservation, Tortugas, Florida. The large birds on the 
stakes are Man-o’-war birds; the white-crowned birds nesting in the bushes 
are Noddy Terns; the birds nesting in the open stretches on the ground are 
Sooty Terns. Photograph by Bartsch. 
VISIT TO THE CERION COLONIES IN FLORIDA 
Through the cooperation of the Carnegie Institution and the U. S. 
National Museum, Dr. Paul Bartsch, curator of marine invertebrates, 
was enabled to visit the Bahama Cerion colonies which he has planted 
on the Florida Keys, between Miami and the Tortugas, last May tor 
the purpose of studying the effect of the changed environment upon 
these organisms. He reports the finding of many adult specimens 
of the first Florida grown generation, which together with those 
