XX. — On a Collection of Land Mollusca from the Island 

 OF Dominica, West Indies. By Henry A, Pilsbry. 



Collections of the land raollusks of Dominica have been made 

 by Mr. R. Lechmere Guppy,* Mr. A. D. Brown, f Mr. G. F. Angas,J 

 Mr. G. A. Raniageg and Dr. Benj. Sharp. || The present list is 

 based upon a collection made in March, April and May, 1890, by 

 Messrs. G. E. and A. H. Yerrill.^i 



In Mr. E. A. Smith's reports upon the collections made by Mr. 

 Ramage, a full list of the land molliiscan fauna of the island is 

 compiled from the reports of previous investigators. To that paper, 

 therefore, the student is referred for references to the literature of 

 the fauna. 



HELICID^. 

 Helix (Dentellaria) nigrescens Wood. (ii845).** 



A color variety (11854) is yellowish-olive, becoming brown toward 

 the lij) and in front of the aperture. 



H. (Dentellaria) badia Fer. (ii826). 



H. (Dentellaria) josephinae Per. (ii844, 11829). 



BULIMULID^. 



Bulimulus laticinctus Guppy. (11 846). 



This is no doubt a local variety of the five-banded Ji. imiUifascia- 

 tus, in wliich two of the bands are confluent, the band formula being 

 1(23)45, whilst that of typical multifasciatus is 12345. 



* See Guppy's report in Annals and Magazine of Nat. Hist. (4), I, p. 429, 1868. 



\ American Naturalist, 1881, p. 56. Mr. Brown's specimens are now in the collec- 

 tion of the Academy of Natural Sciences of Philadelphia. 



X Proc. Zool. Soc, 1883, p. 594. 



§ See E A. Smith's .reports in Ann. and Mag. N. H. (6) II, p. 227, 419. 



II The specimens collected by Dr. Sharp are in the collection of the Academy of 

 Natural Sciences of Philadelphia. 



^ This collection is in the Museum of Yale College. 



** The figures refer to the museum numbers of the Yale College collection. 



