224 On the Clausilice of America. 



The umbilicus is rather less open than in the Jamaica shell. 



Station. — Under stones. 



Habitat. — Catharineberg, St, Thomas ; T. B. I 



24. (24.) Helix ? Sp. indet. 



This is like H.fidva Mull. (Pfr. Mon. Hel. Viv. p. 30. No. 36.) 

 of Europe, and H. simulans Ad. (Contrib. p. 35,) from Jamaica ; 

 but the microscopic impressed spiral lines are much more 

 minute than in the latter, being visible only under a very high 

 power. Compare also the Cuba shell, H. GundlacM Pfr. in 

 Wiegm. Arch. I. p. 250, 1840. 



Station. — Among fine earth, and decayed vegetable matter. 



Habitat. — Catharineberg, St. Thomas ; T. B. ! 



On the Clausili^ of America. By Thomas Bland, 



Oct. 1852. 



The Genus Clausilia is represented in America and the "West 

 Indies by three species only, of which we subjoin an account. 



Pfeiifer in his Mon. Hel. Viv. (1848) describes 222 species, of 

 which, we learn from his table, vol. ii. p. 489, no less than 136 

 occur in Central Europe, and the remaining 86 as follows : — 



In Tauria, 7 species, 



" Greece and Ionian Islands, - - - 25 " 

 " Turkey and Asia Minor, - - - 20 " ' 



" Caucasus, 1 " 



" Sp-ia, 9 " 



" East Indies, . . _ . - 4 " 



"China, 4 " 



" Cochin-China, ----- 1 " 



" Japan, 2" 



" Philippines, - - . - - 1 " 



"Java, 5 " 



"Egypt, 1 " 



" Madeira, ------3" 



" America, 3" 



