ZOOLOGY OP FERNAIfDO NOEONHA. 501 



species of Tomigerus, all of Avhich, liowever, have a mucli more 

 complicated oral dentition, and are of different form, with the last 

 whorl ascending, and other marks of distinctness. 



In general form and texture of the shell it is not at all unlike 

 Pythia inflata, Pfeiffer ; but of course has not the expanded lip 

 or the same dentition as that genus. 



Two only of the twenty specimens which I have examined 

 exhibit any variation in the teeth of the aperture. These want 

 the two parietal denticles. 



3. BuLiMUS (BuLiMULUs) EiDLETi, sp. u. (Plate XXX. fig. 9.) 

 Testa parva, ovata, superne acuminata, umbilicata, fusca, ad 



peripheriam luteo-lineata ; anfractus 5-6, convexiusculi, lineis 

 incrementi striisque spiralibus tenuissimis sculpti, ultimus antice 

 hand descendeus ; apertura ovata, intusfusco-carnea, linea pallide 

 mediana ornata, longit. totius 4- fid sequans ; peristoma undique 

 expansum, carneo-albidum, marginibus callo tenui (interdum 

 crasso) superne subtuberculiformi junctis. 



Longit. 12 millim., diam. 6. 



Hah. Living under bark of Mango-trees in the garden and on 

 the north side of the island ; also found at the base of the Peak, 

 north side, under stones, and on Eat Island. 



I do not know any species sufficiently near this form wherewith 

 to offer a comparison. It resembles somewhat in form certain 

 species of Partula ; it faintly recalls, chiefly on account of colour, 

 Bulimus Jacohi, from the Gralapagos Islands ; and the spiral 

 striation, although finer, somewhat resembles that of some of the 

 species of the genus Plecotrema. 



4. Pupa solitaria, sp. n. (Plate XXX. figs. 10, 10«.) 

 Testa minuta, rimata, albida, ovato-cylindracea ; anfractus 5, 



convexi, striis incrementi tenuibus sculpti, sutura vix obliqua 

 sejuncti, ultimus pone labrum subvaricosus ; apertura parva, 

 quinque-dentata ; dente valido duplici columellari, uno minore 

 etiam duplici in pariete aperturali, duobus parvis ab margiue 

 dextro remotis, quinto minuto basali ; peristoma anguste expan- 

 sum, album, marginibus callo tenui junctis. 



Longit. 2^ millim., diam. 1|. 



Hah. Platform Island. 



This species is a trifle less cylindrical than P.pellucida, Pfeifter, 

 a Cuban species ; but has the number of teeth and their arrange- 

 ment similar. The columellar tooth, however, is double, the 



