OP CONCHOLOGY. 363 



has S. Car a ccasensis,~Rv., which inhabits the Guadeloupe subpro- 

 vince and South America. 



Melaniella is not represented. 



Macroceramus (M. formosus, Wood), with the exception of 

 Cuba, has the largest number of species in Haiti. A noma tri- 

 color, Pfr., is found in this as well as in the Jamaica subpro- 

 vince. The occurrence in Haiti of Vitrina (Malak. Blatt., 

 1858, p. 146), which belongs rather to Eastern North America, 

 is somewhat remarkable. 



The genus Hyalina is widely distributed, but the subgenus 

 Mesomphix [H.fuliginosa, Griff.) likewise more especially of 

 Eastern North America, is represented in the West Indies by 

 one species only, H. ptycoraphe. W. and M., of Haiti, where 

 Hyalina indentata, Say, common in the United States, also 

 occurs. 



Glandina, Spiraxis and Gylindrella, to which I have referred 

 as characteristic of the faunas of Mexico and Central America, 

 are represented in Haiti, — the two first by comparatively few 

 species. Those of Glandina belong to the subgenera Vari- 

 cella (G. biplicata, Wein.), and Oleacina (G. ohacea, Fer., found 

 also in Cuba.) Oleacina Paivana. Pfr., a sinistral species, is a 

 remarkable form. Of Spiraxis, the subgenus Euspiraxis (S. 

 Dunkeri, Pfr.) is alone represented. Gylindrella has a consid- 

 erable number of species, chiefly of the subgenus Urocoptis 

 (G. Menkeana, Pfr.) 



In this suhprovince Orthalicus and Leptinaria (South Amer- 

 ican) are wanting. Of Bulimulus, the subgenus Thanmastus 

 is represented by B. exilis, Gmel., widely distributed in the 

 Porto Rico and Guadeloupe subprovinces; Lioslracus? by B. 

 Dominicits, Rv., referred also to Mexico, and Mesembrinus by 

 B. Moussoni, Pfr. 



The genus Simprdopsis has species in Mexico, but is more 

 especially South American. It is not found in Cuba or Ja- 

 maica, but there is one representative in each of the Islands 

 of Haiti (S. Dominicensis, Pfr.), Porto Rico (»S'. Portoricensis, 

 Shuttle, and Trinidad (S. corrugitus, Guppy.) 



Haiti, as remarked with reference to the operculates. has, 

 the inoperculates also considered, more relationship with Cuba 

 than with Jamaica, as evidenced especially by the occurrence 

 of Liguus and Atrophia, and the many species of Microcera- 

 mus 



Seeing that Vitrina and Mesomphix, as well as Hy dina in- 

 dentata, Say, are found in this subprovince, it may be said to 

 have a greater connection than Jamaica with Eastern North 

 America. 



4. Porto Rico. with. Viejue and the Virgin Idands including 

 also Anguilla, St. Martin and St. Bartholomew. This sub- 



