528 Rev. L. Guilding on the Zoology of 



Testa pallide succinea, depressa, transverse plicatula; anfrac- 

 tibus 5, ultimo multo majori. 



Habitat in insula Sti. Vincentii satis frequens, frondibus emor- 

 tuis palmarum repens, in summo vertice montis Sti. Andreae, so- 

 cietate specie! minoris mox describenda;. 



Axis testai 2 lui. Diam. 4 lin. 



Tab. XV. Fig. 1. Animal repens auctum. — 2. Idem ad latus 

 visum. — 3. Discus gressorius. — 4. Testa prona. — 5. Eadem supina. 



2. Stenopus lividus. 



St. corpore livido, cervice rufescente, pallio nigro maculate. 



Testa subdiaphana, flavo-fuscescens ; spira sub-elevata, an- 

 fractibus sex ; peripheria subcarinata ; umbilico contracto. 



Habitat in frondibus emortuis palmarum in vertice summo 

 montis Sti. Andreas, societate Stenopi cruentati et Helicinarum. 



Tab. Supp. xxvii. Fig. 1. Animal serpens auctum.^ — 2. Long, 

 et Diam. Testae.— 3. Testa aucta. 



A very remarkable and distinct genus allied to the Linnean 

 Helices, from all of which it differs in the curious contraction of 

 the pedal disk, and the caudal tentaculum furnished with a 

 gland beneath. They creep slowly and awkwardly, not being 

 able to support the shell, on account of the narrowness of the 

 foot, without proceeding in a meandering line : it is confined to 

 the higher and damper parts of the noble mountain on which 

 I have already discovered two species, and soon perishes when 

 brought into a drier atmosphere. 



Familia Helicinad^. Guild. 

 Gen. Helicina. Lam., Gray. 

 Olygyra. Say. 



CiiAU. Gen. 

 Animal. Abdomen spirale : corpus corrugatum : cervice, ca- 

 jpjYeque distincto, prominente, declivi, transverse rugosis. Ten- 

 taenia duo, elongata, setiformia, subretractilia. Oculi radicales, 



