268 MR. E. A. SMITH ON THE [Apr. 5, 



iusculi, lente acciescentes, lineis incrementi tenuibus oiliquis 

 striati, ultimus antice valde ascendens,pone labrumconstrictus, 

 scrohiculatus et distortus, inferne qiioque scrohiculatus, ad 

 anfractumpenultimum appressus; spira adapicem valde obtusa; 

 apertura transversim ovafa, superne sinu fere circulari in- 

 structa, intus angustata ; perist. continuum plus minus 

 expansum. 

 Longit. \\ millim., diam. maj. l^, min. I; apertura i long a, 



^ lata. 

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

 (Turton). 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 Boysia. 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 crescentes, sutura vix 

 obliqua sejuncti, lineis perobliquis tenuissime striati, ultimus 

 hand descendens, pone labrum in medio uni-scrobiculatus ; 

 apertura parva, irregulariter subquadrata, longit. totius 3 

 haud ceguans, intus dentibus sex (tribus parietalibus, uno 

 colutnellari, duobus palatalibus) munita ; peristoma niveum, 

 leviter expansum et rejlexum, continuum, superne indenfatum. 

 Longit. 3 millim., diam. 1 ,• apertura | longa et lata. 

 Hab. Sugarloaf Quarry, common (7'Mr/o?j). Extinct. 

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

 taria. Smith, from Fernando Noronha, but rather more cylindrical, 

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

 mouth. 



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

 Testa minuta, cylindracea, pallide fuscescens, rimata ; anfractus 



sex, convexiusculi, sutura i^rofunda sejuncti, costulis arcuatis 

 tenuibus perobliquis ornati, ultimus antice leviter contractus, 

 paulo ascendens, pone labrum haud profunde impressus ; 

 apertura rotunda, subquadrata, longit. totius 5 adcequans, 

 intus haud dentata ; peristoma tenue, undique anguste expan- 

 sum, marginibus superne conniventibus. 

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



