REPORT ON THE BAHAMA CERIONS PLANTED ON THE 
FLORIDA KEYS. 
By Pau. Bartscu. 
In the annual report of the Director of the Department of Marine 
Biology of the Carnegie Institution of Washington for 1912 (Year Book 
No. 11, pages 129-131), attention was called to the transplanting of a 
large number of two races of Bahama cerions to the Florida Keys. In 
Year Book No. 12 (1913) of the same Institution, a report of the results 
of the planting of Bahama cerions on the Florida Keys was made, on 
pages 169-172. In 1914 these plantations were visited at the end of 
April and the following results were noted. I shall first report on the 
conditions of the colonies in the various plantings, and then discuss 
the adult offspring grown in the various colonies. 
April 21, 1914.—We visited the plantation which had been made 
in 1912, on the second Ragged Key north of Sands Key, and gathered 
170 planted specimens, all but one of which were alive and seemed to 
be thriving; 55 of their offspring were also found, three full-grown 
(plate 3, the first 3 figures of the left-hand side of bottom row); the 
others varied in size from nepionic whorls to half-grown. We returned 
the original lot and two of the young to the spot, taking the 3 adults 
for the collection of the U. S. National Museum, at Washington. In 
order to isolate the generations and in the hope of starting a new 
colony, 50 of the young were planted in a grassy spot about 62 feet 
northeast from the old planting; this planting was marked with a short 
stake and a piece of drift bamboo was put in an old stump near the 
place. The members of this colony have moved but little beyond 
their limits of last year. 
On the first Ragged Key north of Sands Key someone had built a 
house in the midst of our plantation. Our cerions were clinging to the 
walls of the house and to bushes and grass near it. We gathered 144 
of the original planting, all living, and placed them near the northwest 
corner of the house. We also collected 50 young, which, like those 
found on the last key, varied from mere tips to half-grown. Not one 
full-grown individual produced on this key was found. We took the 
50 young to Sands Key, in order to start a new colony with this genera- 
tion, and planted them in the middle of the first sand stretch south of 
the north end, on the seaward side. The place is marked by an old 
skinned and bleached white tree, which forms a conspicuous landmark 
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