S.MITH : MARINE SHELLS FRO.M PORT ALFRED. 35 



Diam. maj. 9 millim., min. 6.5 ; alt. 8. 



Allied to N. queketU, Sowb., but differently coloured, the body-whorl 

 descends more, and there are differences in the umbilical opening and the 

 columellar callus 



Rissoina alfpedi, r.sp. 

 PI. ii, fig. 24. 



Testa elongata, acuminata, alba; anfractus circiter 10, normales septem fere 

 plani, oblique costati, costis leviter arcuatis, circiter 14, ultimus costis infra 

 undulatis instructus, circa basim inter costas tenuiter liratus: apertura obliqua, 

 acuminate ovalis ; labrum paulo incrassatum ; columella callo tenui reflexo 

 induta. 



Longit. 7 millim., diam. 2.5. 



A {)ure white shell with very oblique ribs and some fine striae around 

 the base of the body-whorl, where the costae are slightly waved. 



Rissoa perspeeta, n.sp. 

 PL ii, fig. 25. 



Testa minuta, elongato-ovata, alba, pellucida, laevis ; spira obtusa, ad apicem 

 rotundata ; anfractus 4, convexiusculi, infra suturam late hyalino-marginati, 

 ultimus elongatus ; apertura parva, pyriformis, ^ longit. totius subaequans ; 

 peristoma continuum, leviter incrassatum, margine externo subpatulo, colum- 

 ellari, subreflexo, appresso. 



Longit. 2 millim., diam. i. 



The form and colour are different in It. conxpecta and the whorls are 

 rounder. The peristome in the present species is thicker and a little patulous, 

 and the pellucid margination below the suture is broader than in coiuim'ta. 



Rissoa eonspeeta, n sp. 



PL ii, fig. 26. 



Testa minuta, ovato-turrita, pallide fuscescens subpellucida, nitida, lineis 

 incrementi tenuibus striata, imperforata ; spira ad apicem rotundata, obtusa ; 

 anfractus 5 convexi, infra suturam hyalino-marginati ; apertura ovato- 

 pyriformis, circiter ^ longit. totius adaequans ; peristoma continuum, margine 

 externo tenui, columellari leviter vel vix reflexo. 



Longit. 2 millim., diam. i. 



A very small glossy shell, of a pale brownish colour, without any sculp- 

 ture, excepting the lines of growth. The peristome is perhaps rather paler 

 than the rest of the whorl. 



Eulima distineta, n.sp. 

 PL iii, fig. 1. 



Testa parva, breviter subulata, alba, polita, ad apicem baud acuta, varicibus 

 pluribus instructa ; anfractus 8 fere plani, infra suturam leviter obliquam zona 

 angusta pellucida ornati, ultimus ad medium obtuse vel obsolete angulatus ; 



