182 CARNEGIE INSTITUTION OF WASHINGTON. 



New Colonies. 



The two new colonies planted this year are : 



Colony M 300 tips from Colony F, of the first generation of " Kings Road " 

 type cerions of the 1914 planting. This new colony is placed a little south 

 of the entrance stake to the original "Kings Road" type colony. It is on 

 the inner edge of the outer sand-dune. 



Colony N. 8317 specimens of a species of cerion gathered by Dr. Ralph 

 Arnold on Curasao, Netherlands West Indies. This is placed at the south- 

 eastern end of the large central meadow at the southern end of the island. 

 We cleared this field of cactus to render observations less arduous next year. 



Boca Grande Key. 



The second colony on Boca Grande Key, consisting of first generation of 

 Florida-grown individuals, was, I believe, completely destroyed by fire this 

 year; but at the original planting many shells were seen upon the grass and 

 bushes in the little meadow which is separated from the outer by a fringe 

 of low bushes. It will be remembered that the original planting was visited 

 by fire last year; the remnant in the location above referred to escaped burn- 

 ing and may continue the race. 



A detailed report of the first generation of Florida-grown cerions, of which 

 there is a large series on hand from most of the colonies, will appear soon, 

 giving measurements, illustrations, and a general discussion of the data. 



Report on the Colony of the Florida Tree Snails transplanted from Miami to 

 the Tortugas and Key West, by Paul Bartsch. 



In Year Book No. 14 of the Carnegie Institution (pp. 196-197, 1915) 

 attention was called to the attempted colonization of this magnificent mol- 

 lusk, which is threatened with extermination in the region of Miami, upon some 

 of the southern keys. 318 specimens were transplanted, of which 113 were 

 placed in the trees situated in the angle between the main road and first 

 path to the left within the fort on Garden Key, 92 were placed in various 

 kinds of shrubs and trees around the Laboratory on Loggerhead Key, and 101 

 were planted in the small groves of cordia trees on the east side and a little 

 north of the light-house on Loggerhead Key. The remaining 12 were placed 

 in trees near the commandant's residence at the naval station at Key 

 West. A careful search in all these places failed to reveal a single shell 

 and, unless these mollusks have burrowed in the ground or hidden away in 

 knotholes or crevices which I was unable to discover, this experiment will 

 have to be considered closed and a failure. 



Birds Observed in 19 16, in the region of Miami and the Florida Keys from May 15 

 to June 4, CLud along the Railroad from Key West to Miami on June 24, by 

 Paul Bartsch. 



During the past three years a hst of the birds observed in southern Florida 

 and on the ofT-lying keys has been published in each Year Book of the Carnegie 

 Institution of Washington. Similar observations were continued this year, 

 resulting in a total list of 54 species, of which 8 are additions to the lists 

 which I have previously published. These represent the following species: 

 Little blue heron, Florida clapper-rail, turnstone. Everglade kite, short- 

 eared owl, chuck-will's-widow, wood pewee, and purple martin. This addi- 

 tion brings the total number of species observed during the past four seasons 

 to 97. The season at which the observations were made would lead one to 

 beUeve that almost all of the species listed are breeding birds. 



