THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY, 



[SECOND SERIES.] 

 No. 108. DECEMBER 1856. 



XXXVI. — New Land Shells collected by E. L. Layard, Esq., 

 and described by W. H. Benson, Esq. 



The following shells were collected by Mr. E. L. Layard at the 

 Cape of Good Hope, and on his route to that colony, at St. 

 Vincents, in the Cape de Verde Islands, and St. Helena. His 

 researches have added new localities for several species already 

 known, and he has furnished some interesting facts respecting 

 their habits. 



Bulimus arenicola, nobis, n. s. 



Testa vix perforata, trochiformi, irregulariter subplieato-striata, 

 nitidula, albida, rufo-castaneo fasciata ; spira attenuato-conica, 

 sutura leviter impressa, apice acute, castaneo ; anfractibus 6^ 

 subplanulatis, ultimo magno, dimidium testae efformante, acute 

 carinato, subtus convexiusculo, faseiis duabus, altera suturali, 

 altera ad carinam, ornate ; apertura magna, subquadrato-rotun- 

 data ; peristomate simplici, acute, margine externo infra ad peri- 

 phteriam angulato, columellari verticali arcuate, expansiusculo, 

 superne breviter appresso-reflexo, perferationem fere claudente, 

 basali valde arcuate. 



Long. 17, diam. 15 ; long, apert. 10, lat. 8|-mill. ; diam. anfr. supra 

 aperturam ad carinam 1 1 mill. 



Ilab. ad celles arenesas prope sinum ** Waterloo '* dictum CafPrariae. 



Were it not for the evident affinity of this shell to the Natal 

 species, Bulimus spadiceus, Menke, I should have been inclined 

 to refer it to the genus Helix. Mr. Layard states that there is 

 a brown, bandless variety. It may be at once distinguished from 

 B. spadiceus by its higher and more slender spire, by the acute 

 carination of the last whorl, and by its imperfect perforation ; 

 the umbilicus in B. spadiceus being pervious, although narrow, 

 and merely hidden by the free dilatation of the columellar lip. 



Ann. ^ Mag. N. Hist. Ser. 2. Vol. xviii. 28 



