434 Mr. W. H. Benson on some new Land Shells. 



laoir^ib r Bulimus Gemmula, nobis, n. sJ/ J'T'l^'^ '^ ""^' 



Testa rimato-perforata, ovato-conica, striatula, nitida, cornea ; spira 

 conica, sutura impressa, apice obtasiusculo ; anfractibus 5, ultimo 

 ad basin circum umbilicum subangulato-eompresso ; apertura ro- 

 tuudato-ovali, tuberculo vix conspicuo parietali subangulari munita ; 

 peristomate undique expansiusculo, tenui, acuto, margine dextro 

 arcuate. 



Long. 2|, diam. \\ mill. 



Hab. ad insulam Sancti Vincentii Promontorii Viridis, sub lapidibus. 



Found by Mr. Layard on the west side of the island, under 

 the Duke's Head Mountain ; not uncommon. This little shell 

 belongs to the group which contains Bulimus nitidulus, Pfr., 

 B. putillus, Shuttl., coenopictus, Hutton, tutulus, nobis, and mar- 

 ginatus [fallax), Say, which have been indifferently assigned to 

 Bulimus and PupUj and all of which are characterized by the 

 tubercle at the right angle of the parietal border. 



Bulimus compressilabris, nobis, n. s. 



Testa vix perforata, subuliforrni, confertim flexuose costulato-striata, 

 cerea, albida, sutura subimpressa, marginata, apice obtusiuseulo ; 



'. anfractibus vix 7, ultimo f longitudinis sequante ; apertura trun- 



-4 cato-ovali, basi rotundata ; peristomate tenui simplici, margine 

 dextro superne antrorsum arcuatim producto, subcompresso, colu- 

 mellari vertical!, breviter reflexo, subtus nullo modo truncate nee 

 emarginato. .iui^jy- -Aai i^njiikin 



Long. 6^, diam. 2 mill^r^ ! irr r^a-mn ? 



Hab. ad insulam Sanctse Helense in horto publico non infrequens. 



This is a form of the widely spread type to which Bulimus 

 Goodalli, Octona, &c. belong. Mr. Layard found it in a little 

 artificial watercourse in the public gardens at the entrance of 

 Jamestown. 

 :' ' Achatina Spiculum, nobis, n. s. 



Testa imperforata, subulato-cylindracea, gracillima, hyalaea, politis- 



sima ; spira elongaia, apice obtuso, sutura impressa, marginata ; 



^. anfractibus sub 6, convexiusculis, ultimo ^ testae sequante ; aper- 



; tura vertical!, attenuato-pyriformi, basi rotundata ; labro obtusius- 



- culo, leviter arcuato ; columella ad basin oblique valde truncata et 



pariete callosis. 

 Long. 4, lat. 1 mill. ; long, apert. 1^ mill. 

 Hab. ad insulam S*^ Vincentii sub lapide. 



A single specimen was found by Mr. Layard on the west side 

 of the island, under the Duke's Head Mountain. This is a very 

 distinct species of the Acicula type. An uncertain species, Ach. 

 vitrea, W. B., from Teneriffe, is contained in D'Orbigny's collec- 

 tion in the British Museum. Dr. Pfeiffer has, on examination, 

 transferred it to the genus Bulimus, in which he places it as 



