NO. 17 



SMITHSONIAN EXTLORATIONS, igiT) 



41 



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. 



Fig. 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 Rartscli. 



VISIT TO THE CERION COLONIES IN FLORIDA 

 Through the cooperation of the Carnegie Institution and the V. S. 

 National Museum, Dr. Paul Bartsch, curator of marine invertebrates, 

 was enabled to visit the Bahama Cerion colonies which he has jilanted 

 on the Florida Keys, between Miami and the Tortugas. last May for 

 the i)urpose 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 



