268 MR. E. A. SMITH ON THE [AV^' ^» 



iusculi, lente accrescentes, lineis incrementi tenuibus dbliquis 

 striafi,ultimus antice valde ascendens,pone lahrumconstrictus, 

 scrohiculatus et distortus, inferne quoque scrobiculatus, ad 

 anfractiwi ^lenultimum appressus; spira adapicem valde obtusa; 

 apertura transversim ovata, superne sinu fere circulari in- 

 structa, inUis angustata ; perist. continuum plus minus 

 expansum. 

 Longit. 1| millim., diam. maj. 1^, min. I; apertura 5 longa, 



^ lata. 

 Hab. Side Path, and the sinistral form from Sugarloaf Ridge 

 (Turion). Extinct. 



This is a very remarkable little species and quite unlike any 

 other from the island. 



The manner in which the last whorl ascends in front upon the 

 penultimate recalls certain species of Tomigerus and JBogsia. The 

 emargination at the upper part of the peristome is most remarkable. 

 It has the appearance of being the termination of a tube, the edge of 

 which is notched at one place. The shallow depression on the 

 lower part of the body-whorl towards the aperture and the more 

 distinct groove behind the peristome give the last volution a 

 decidedly distorted appearance. It is difficult to decide whether 

 this species should be classed as a Tomigerus or a Pupa. In size 

 it more resembles the latter genus, but in outline the former ; it 

 has not, however, the same armature to the mouth. 



23. Pupa turtoni, sp. nov. (Plate XXII. figs. 20, 20 a.) 



Testa minuta, cylindracea, superne obtuse conoidea, albida, sub- 

 rimata; anfr actus 5-6, convexi, lente crescent es, sutura vice 

 obliqua sejuncti, lineis perobliquis tenuissime striati, ultimus 

 liaud descendens, ■pone labrmn in medio uni-scrobiculatus ; 

 apertura parva, irregulariter subqnadrata, longit. totius 5 

 hand ceguans, intus dentibus sex {tribus parietalibus, una 

 columellari, duobus palatalibus) munita ; peristoma niveum, 

 leviter expansum et reflexum, continuum, superne indentatum. 

 Longit. 3 millim., diam. 1; apertura g longa et lata. 

 Hab. Sugarloaf Quarry, common (Tijrf oh). Extinct. 

 This species might be found anywhere. It is not unlike P. soli- 

 taria, Smith, Irom Fernando Noronha, but rather more cylindrical, 

 less conical towards the apex, and has different armature to the 

 mouth. 



24. Pupa obuquicostulata, sp. nov. (Plate XXII. fig. 21.) 



Testa minuta, cylindracea, pallide fuscescens, rimata ; anfractus 

 sex, convexiusculi, sutura profunda sejuncti, costulis arcuatis 

 tenuibus per obliquis ornati, ultimus antice leviter contractus, 

 paulo ascendens, pone labrum haud profunde impressus ; 

 apertura rotunda, subquadrata, longit. totius \ adaequans, 

 intus haud dentata ; peristoma tenue, undique anguste expan- 

 sum, marginibus superne conniventibus. 



Longit. 2 millim., diam. | ; apertura | longa, | lata. 



