Mollusca of Dominica. 431 



the convexity of the spire, and in that particular our shell is 

 nearer to H. Baudoni) and the balance of characters is in 

 favour of the latter name. The animal is viviparous, often 

 containing twenty young of different sizes. The smallest 

 shells resemble a Bulla in shape. The lingual teeth are like 

 those of H. ceUariay and the animal is not furnished with any 

 caudal appendage. 



4. Helix Josephinmy Fer. 



5. Helix dentiensy F^r. 



6. Helix badia^ F^r. 



7. Helix nigrescens^ Wood. 



These four Helices are common throughout the island. 

 Their mandibles and lingual dentition are similar. 



8. Bulimulus laticinctus, n. sp. 



Testa perforata, conico-elongata, tenuis, fusca vel flava, nitida, de- 

 cussata, castaneo 4-fasciata (in forma /3 unicolor), fascia media 

 latior ; anfr. 6, convexiusculi, regiilariter accrescentes, ultimus | 

 longitudinis testae circiter sequans ; spira elongata ; apex acumi- 

 natus ; apertura semiovalis ; peristoma simplex, acutum, vix ex- 

 pansum ; cohimella torta, dilatata, reflexa. 



Alt. 24 millim., lat. 10 ; aperturge alt. 10, lat. 5 ; anfr. ult. alt. 15. 



«. Shell perforate, conic-elongate, fuscous or yellow, thin, 

 shining, decussate, zoned by four dark chestnut bands, of 

 which two are visible on the upper whorls, the second (reckon- 

 ing from the suture) being the widest ; whorls 6, a little con- 

 vex ; peristome thin, columellar margin reflected over the 

 narrow perforation ; columella slightly twisted. 



/S. Like «, but yellowish or greenish, devoid of colour- 

 bands, and somewhat broader. 



A species allied to B. midtifasciatus, but narrow and rela- 

 tively more elongate, and with only four wide colour-bands. 



9. Bidimxdus exilis, Gmelin. 

 10. Bulimulus stenogyroides, n. sp. 



Testa rimata, turrita, elongata, cylindrica, parum nitens, albido- 

 cornea sub epidermide brunnea, sinuato- striata ; anfr. (? circa 5-6) 

 convexiusculi, ultimus spia-ae longitudinem superans; apertura 

 elongato-ovalis, angusta, producta; peristoma simplex, acutum, 

 marginibus callo temii junctis ; columella reflexa. 



Long. — ?, lat. 5| millim. ; apert. alt. 6, lat. 2^ ; anfr. ult. alt. 10. 



A rimate, turrite, elongate cylindric, scarcely shining shell, 

 whitish horn-coloured under a brown epidermis, the strise of 



