THE NAUTILUS. 121 



reguli. I also found a single specimen of Macroceramus, 

 which I have not yet identified. 



Of course I was much handicapped by the fact that I was 

 in uniform, and consequently rather conspicuous, also that I 

 had no means of properly caring for the shells on board 

 once I had collected them. For these reasons I didn't collect 

 as intensively as I might have, and I have often kicked myself 

 since for it. Some day I hope to return to these interesting 

 islands. 



The following is a list of the mollusks I collected in the 

 West Indies, as far as I have been able to determine them. 

 Mr. Charles W. Johnson and Mr. W. F. Clapp have kindly 

 aided me in identifying the material. 



St. Thomas, Virgin Islands. 



Bulimulus exilis Gmel. Subulina octona Drug. 



Guantanamo Bay, Cuba. 



Thais patula L. Nerita peleronta L. 



Thais undata Lam. Nerita tesselata Gmel. 



Sistrum iiodulosum C. B. Ad. Chlorostoma excavatum Lam. 



Cymatium aquatile Rve. Livona pica L. 



Leucozonia ciugulifera Lam. Vasum muricatum Born. 



Strombus bituberculatus Lam. Fissurella nodosa Born. 



Strombus gigas L. Fissurella barbadensis Gmel. 



Cerithium litteratum Born. Acmaea candeana Orb. 



Cerithium atratum Born. Cepolis ovum-reguli Lea. 



Littorina ziczac Gmel. Macroceramus sp. 



Littorina z. lineatus Lam. Chiton tuberculatus L. 



Tectarius muricatus L. Chiton squamosus L. 



Echinella nodulosa Pfr. Acanthopleura granulataGmel. 



Modulus modulus Lam. Codakia orbicularis L. 



Planaxis nucleus Wood. Lucina chrysostoma Morch. 



Nerita praecognita C. B. Ad. Area occidentals Phil. 



Nerita versicolor L. Area deshayesii Hanley. 



