48 



Of Ackatina, A. ociona is very widely distributed through the 

 West Indies, and is said by Mr. Reeve to occur in the Polynesian 

 islands. It has probably been distributed more or less by human 

 agency. In Jamaica, it occurred only in Kingston, in a small gar- 

 den near the shipping. A. leucozonias is said by Ferussac to oc- 

 cur in Martinique. It has twice been given to me in Jamaica as a 

 native species, although I have not found it in place. A. Domini- 

 censis is said to occur in Hayti. I have found it in the eastern 

 part of Jamaica. According to Dr. Pfeiffer, his variety of y of 

 A. venusta occurs in Demerara. The remaining twenty-four spe- 

 cies are known only as natives of Jamaica. 



Fifteen species of Bulimus have been found in Jamaica, of which 

 one only, B. zebra, is known to inhabit other islands. The habits 

 of this species, which lives on cultivated and other shrubs, lattice 

 fences, &c. near human habitations, and its very local distribution 

 in such situations, suggest that it may have been introduced. 



Of the more general distribution of the small species, we have a 

 remarkable example in the genus Pupa. Of the nine speeies known 

 to me, one appears to be identical with P. contracta, which is well 

 known to occur over a large part of the United States. As far 

 north as 44° lat., I have frequently found it in Vermont. In cer- 

 tain localities the Jamaica shells of this species are very abundant. 

 Another species, which I have found in Jamaica and received from 

 Cuba, is not distinguishable specifically from P. fallax, which has a 

 similar distribution in the United States. The West Indian variety 

 however is thinner both in the lip and in the walls of the shell ; 

 and, if a slight difference, especially when constant, should have 

 more weight in distinguishing species where plurality of origin is 

 probable, perhaps this variety is entitled to specific rank. P. servi- 

 lis was found by Dr. R. E. Griffith in Santa Cruz. P. striatella, of 

 which one specimen was given to me in Jamaica as native, is said 

 to occur in Hayti, Porto Rico, &c. But this species belongs to 

 the group of large and solid Pupse, which are more maritime in 

 their habits. 



[to be CONTI^'UED.] 



Errata. — On p. 18, line 8th from the bottom, for tip read lip. 



" 40, after 75 B. Ijeviusculus Ad. insert 75 bis. B. subula Pfr. 



Note. — Ten of the fresh water species will be sold at the same rate as the 

 150 species of land shells. See Note p. 15. Some additional rare species in all 

 these families can be had at .50 cts. each, with one or two specimens of each. 



