196 CARNEGIE INSTITUTION OF WASHINGTON. 



stake marking the place where they were liberated in 1912. Many of these 

 snails have taken to the bay-cedars, which border the little meadow. We 

 picked up 646 specimens, which may be of the first or of the first and second 

 generations of Florida-grown specimens. We measured 250 of these and 

 photographed the lot, then planted all of them in a little meadow to the west of 

 the original planting, which is separated from this by a fringe of bay-cedars. 

 We placed them in the north end of this meadow and marked the planting by 

 a stake bearing the legend "Cerions 1915 K." 



Colony F. — This colon})- consists of the 500 of the "King's Road type" cerions 

 imported and planted in 1914 by Dr. Mayer. It is doing well. The adults 

 were up on the grass and bushes. No young were seen; if any were present 

 they were probably still very small and buried in the sand. 



Colony G. — Last year we planted 300 specimens, ranging from mere tips to 

 three-quarters-grown of the first generation of Florida-grown "King's Road 

 type" cerions taken from colony E. Of these we recovered 49 adult or 

 almost adult specimens, which were measured, photographed, and planted in 

 the meadow a little to the west of colony K. We marked the place with a 

 stake bearing the legend "Cerions 1915 L." 



Colony H. — We planted a mixture of 500 each of the "King's Road type" 

 and the "White House type" cerions in 1912. This colony we decided to 

 transplant last year to a more favorable location, the old place having been 

 partly burned over and partly swamped by a rank growth of cactus and grass. 

 We cleaned up the place last year, by pulling up the cactus and hunting the 

 ground over thoroughly; 200 of the "White House type" and 150 of the 

 "King's Road type" were found and transferred to a new place, colony I. 

 This year quite a number of specimens were found in the bay-cedars bordering 

 the west side of the original planting which we must have overlooked last 

 year. These we left there undisturbed. 



Colony I. — Colony I was supposed to be ail that was left in 1914 of the mixed 

 colony H, which we transplanted to this new site. These specimens are doing 

 well, but no young were noticed. 



A new colony of a new strain of cerions, collected by Dr. Mayer at Ballena 

 Point, near Guanica Bay, Porto Rico, was planted in a little meadow on the 

 west side of the south end of the island. This colony consists of 800 specimens, 

 which were marked as usual. The place of planting was marked by a stake, 

 bearing a copper tag, with the legend "Porto Rico 1915." 



The small colony on Bird Key has completely disappeared and no sign of 

 cerions was found at the two plantings on Garden Key. 



An Attempt to Colonize the Tree Snail, Liguus fasdatus, at Tortugas, 



by Paul Bartsch. 



On our visit to Brickies Hammock, near Miami, Florida, this year, we found 

 that the ground was being extensively cleared, which of course will mean the 

 extermination of the splendid Liguus colony which occupies this hammock. 

 It seems a pity that this magnificent mollusk, the largest and most beautiful 

 of all the land shells native in our country, should thus be forced from this 

 accessible locality. With the hope of colonizing it on the Tortugas, Avhere the 

 genus does not occur at present, 307 of the 319 specimens gleaned in an hour's 

 walk through the hammock were transferred to these islands. These we 

 divided into three groups: 



First : Light-colored, without the mottled markings on the early whorls, of which there 



were 113. 

 Second: The dark-colored individuals without the mottled markings on the early 



whorls, of which there were 92. 

 Third: Those which have the early whorls mottled, of which there were 101. 



