44 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 66 
found last year of the same generation, will furnish the basis of a 
report now in preparation. 
No adult specimens of the second generation have as yet been 
obtained, although many immature individuals of it were observed, 
which should attain complete development during the year (1917). 
The results to be shown by this second generation, probably the most 
interesting one, are eagerly looked forward to. 
An unlooked for result was obtained on New Found Harbor Key, 
where four hybrid specimens between the native Cerion incanum 
and the transplanted Bahama stock were obtained. 
Fic. 45.—Mr. Bethel, the Bird Guardian on Bird Key. Photograph by Bartsch. 
The Florida tree snails, Liguus fasciatus, transplanted from 
Brickles Hammock near Miami, to the grounds of the Commandant’s 
residence at Key West, and Garden and Loggerhead Keys, Tortugas, 
have completely disappeared from these places, not even a trace of 
a shell being found, thus stamping the experiment a failure. 
During the Cerion investigations, and while traveling on a slow 
train between Key West and Miami on June 24, Dr. Bartsch kept 
records of the birds observed. These are to be shortly published in 
the Year Book of the Carnegie Institution, as his fourth annual list 
of the birds observed in scuthern Florida. Eight species were added 
this year, which had not been previously noted, bringing the total 
so far seen to ninety-seven. 
