178 AMERICAN JOURNAL 



interesting, considering that two species belong to Guadeloupe 

 and four to Martinique, but none to the other islands. Several 

 species inhabit Mexico, Central and South America, but the 

 genus has its greatest development in India. The discovery of 

 a species of Diplommatina, also of Asiatic type, in Trinidad, 

 and of an Indian species of Ennea in that island, Grenada, and 

 St. Thomas, is remarkable, but they have, in my opinion, most 

 probably been introduced.* 



The relations of the faunas of Grenada and Trinidad are very 

 striking, —indeed, from St. Kitts and Antigua to Trinidad, the 

 same fauna unquestionably prevails. 



Guppy's writingsf contain much new information on the lingual 

 dentition of West Indian species, to which, on the present occa- 

 sion, I can only incidentally refer. Ilis papers on the Tertiary 

 Formations of the West Indies (Quar. Jour. Geo. Soc, 18G6-7) 

 should also be mentioned as extremely valuable contributions to 

 science. 



TRINIDAD. 



1. Diplommatina Huttoni, Pfeiffer. 



Near the Maracas Waterfall. $ Gill, Guppy. Also India. 



I sent one of Gill's specimens to Pfeiffer, who returned it with 

 label, — "It seems, indeed, to be a Diplommatina, very like 

 D. Huttoni." As Guppy remarks, there is scarcely yet absolute 

 certainty that the Trinidad and Indian shells are identical, but I 

 believe them to be so. 



2. Cyclotus translucidus, Sowerby. 



Among dead leaves in forests, on calcareous soils. Abundant 

 on one of the Cotoras Islets, and near Savana Grande, more 

 sparingly in many other districts. Gill, ( Guppy. Also Venezuela. 



* For an interesting account of the curious affinities of certain fossil 

 Helices found in Algeria, with species now living in Guadeloupe and Mar- 

 tinique, I refer to a paper by M. Crosse, in the Jour, de Couch. 3 ser. ii, 

 153, 1862. 



t See "On the Lingual Dentition of some West Indian Gasteropoda," 

 by R. J. Lechmere Guppy and Jabez Hogg. Linn. Trans., xxvi. Some 

 of the figures illustrating this paper appear to me quite unsatisfactory. la 

 justice to Mr. Q-uppy, 1 should mention that he tells me, — "I regret to 

 say that the artist has altogether misinterpreted the structure of some of 

 the dental bands, and the paper should have had twice as many figures 

 to render it of any value. I hope that I may be able to rectify this at a 

 future time." 



J All the information as to the station and particular habitats of the 

 species are given on the authority of Guppy. Prof. Theodore Gill col- 

 lected iu Trinidad in 1858. 



