170 CARNEGIE INSTITUTION OF WASHINGTON. 



cistern, antl marked with a stake. The dead shells were placed on the wall 

 opposite the planting. 



On April 27 we visited the planting of 500 specimens of "King's Road" 

 type cerions on Tea Table Key. We found the place covered with a rank 

 growth of a malvaceous plant which seems unsuited to the cerions, for they 

 have left it and all have wandered inland, some as much as 100 feet. Most 

 of them died on this journey. Of the 75 recovered, only 3 were alive. 

 We planted these and also left the dead shells among some amaryllis plants, 

 about 200 feet northwest of a cordia tree {Cordia sebestina), which is about 

 100 feet west of the old building, where the first planting was made. Last 

 year the malvaceous plant was past the flowering and fruiting stage, giving 

 the locality a most desirable aspect for a cerion plantation. No young were 

 found. 



On April 28 we paid a visit to the cerions planted on Bahia Honda Key, 

 where 500 of the "White House" type were left last year. This place has 

 been completely overrun by Cenchrus trihuloides, full of burrs, which made 

 our search for cerions a rather trying one. Only 70 of the planted speci- 

 mens were recovered, 7 of which were dead. No doubt many more could 

 have been found, but this would have required a great amount of tearing 

 up of vegetation and the enduring of a lot of misery, both undesirable at 

 this time, since the only young specimens discovered were quite young, con- 

 sisting practically of the nepionic whorls only. We planted the recovered 

 lot opposite the tall palm above the mouth of the ditch and marked the 

 place with a stake. On the same day we called at the planting on Duck 

 Key, where 500 of the " King's Road" type were left. Here we found that 

 the cerions had become quite scattered. We recovered 125, all of which 

 were living, and were up in the grass and shrubbery, but not a single young 

 specimen was to be seen. The dense grass made it difficult to find the 

 shells, but as no dead specimens were found, we may consider that the 

 colony is doing well. We replanted the whole batch near the old plantation 

 and marked the place with a stake. 



We next visited the plantation of 500 of the "King's Road" type made 

 in the middle of New Found Harbor Key, and recovered 145, some of which 

 had moved fully 50 feet from the place where they were planted; 14 of 

 these were dead. Here the grass was so densely matted and luxuriant that 

 it was difficult to find the specimens, which were quite generally distributed. 

 No young were found. We replanted the recovered material on the ridge 

 of the middle of the south side of the island, near the previous planting, 

 fearing that the low central section might be subject to inundation, in case 

 of heavy storms; the new place was marked with a stake and two cross- 

 marks were cut into a coconut tree nearby. 



On May 1 we stopped at Boca Grande and looked over the cerion plant- 

 ing, where 500 of the "King's Road" type were left last year, under the 

 United States Coast Survey beacon. We recovered 128 from the very 

 dense vegetation, only 2 of which were dead. No young were found. We 

 replanted the lot a little inside of the inner side of the beacon, and marked 

 the place with a stake. 



On May 2 we visited the cerion plantation on Garden Key, where 138 

 of the "King's Road" type were left a year ago. The ground at this place 

 was covered with a rank growth of morning glor}^ {IponKsa pes-caprce). I 

 cleared a space of 10 by 20 feet by use of a pocket knife, and recovered 62 of 

 the planted mollusks. I understand that some persons visiting this key 

 had discovered this planting and collected some of the specimens, and, 

 although they were asked to replace them, it is quite possible that this may 



