MELVILL AND STANDEN : SHELLS FROM LIFU. 307 



A small white species of simple character. Longitudinally 

 obliquely ribbed, the costae being many, and with their inter- 

 stices mostly smooth, but occasionally very finely striate when 

 seen microscopically ; mouth oval, lip rather thickened. 



R. enteles sp. nov. (PI. XL, fig, 63). 



R. testa pyramidato-fusiformi, pellucida, albida, nitida, 

 anfractibus septan, mini me titmidulis, spira liter tenui-sul- 

 eatis, sulcis superficialibus, ultimo anfractu infra medium 

 nitidissimo, planato, aliter tenuisulcato, apertura lunata, 

 effusa, labro crassiusculo, planato, simplice. 



Long. 6, Lat. 2-50 mill. 



A white pellucid shell, with a milky tinge ; the whorls, 

 seven in number, are finely sulcate, sulcations extremely super- 

 ficial. There is a space round the body of the last whorl where 

 these sulci are absent, but they are resumed round the base. 

 The mouth is wide, lip somewhat incrassate. (evTeAiys perfect, 

 complete). 



R. nesiotes sp. nov. (PI. XL, fig. 64). 



R. testa elongata, turrita, albida, anfractibus novem, quorum 

 duobus apicalibus, vitreis, Icevibus, ceeteris ventricosulis, pal- 

 tide oeliraceo-tceniatis, longitudinaliter obliqui-costatis, costis 

 iiumerosis, Icevibus, nitidis, interstitiis sub lente spiraliter 

 ieuuissime striatis, in ultimo anfractu costis ad basim tuber- 

 culatis, tuberculatum quinque ordinibus, apertura ovata, 

 labro multum iucrassalo, intus simplice. 



Long., 6, Lat., \'^o mill. 



A smooth shell, elongate, obtusely turreted, whorls ventri- 

 cose, nine in number, two being apical and glassy ; all the 

 whorls are simply obliquely costate longitudinally, the inter- 

 stices being extremely finely striate. A pale spiral ochreous 

 band surrounds the lower half of the whorls. xAt the base of 

 the last whorl, the costse become tuberculated ; there are five 

 spiral rows of these. Mouth ovate, much thickened. Several 

 specimens. N.B. — A form of this species also occurs in 



