316 On new Sj)ecies o/Pleuvotoniiilse. 



Pleurotoma {Clathnrella) munda. 



Testa angTiste ovata, alba ; anfractus 7, supremi duo la5ves, cseteri 

 convexiusculi, costis crassis circiter 9 instructi, et liris spiralibus 

 tribus tenuibus sed maxime elevatis cincti, sutura filiformi se- 

 juncti ; anfractus ultimus costis paululum ante basim evanidis, ot 

 liris 11-12 ornatus ; apertura parva, loupitudinis totius 5 paulo 

 superans ; labrum extus incrassatum, superne levissime sinuatum, 

 intus denticulis 2-3 armatum ; columella callo tenui induta, 

 in medio liris duobus transversis munita ; canalis angustus, brevis. 



Long. 4| mill., diam. 1|. 



Hah. Persian Gulf and China Sea ? 



This species is especially remarkable for the fine yet very 

 prominent thread-like lirations encircling the whorls. The 

 longitudinal ribs are stout, rounded, and equalling in width 

 the interstices between them. 



Pleurotoma ( ?) contempta. 



Testa elongata, angusta, subfusiformis, albida, ad apicem fuscescens ; 

 anfractus 10, perconvexi, superne juxta suturam sulco angustius- 

 culo sulcati, costis rotundis 9-10 superne ad sulcum terminatis 

 (in anfr. ultimo paululum infra medium evanidis) instructi, trans- 

 versim confertim lirati, liris circiter 8 injequalibus supra costas 

 leviter incrassatis ; anfr. ultimus infra medium constrictus, in 

 caudam brevem productus ; apertura parva, longitudinis totius ^ 

 adaequans : labrum tenue, ad suturam leviter incisum ; canalis 

 obliquus, angustus, leviter recurvus. 



Long. 9 mill., diam. 3. 



Hah. ? 



The whorls are very convex, and at the upper part close 

 to the suture there is a spiral furrow or concavity striated 

 faintly in a longitudinal direction. The spiral lirations are 

 fibout twenty-four in number on the body- whorl. 



Pleurot07na {Bela?) incondita. 



Testa elongata, ovato-fusiformis, sordide albida ; anfract. 6-7, su- 

 premi duo lajves, magni, cseteri medio convexi, longitudinaliter 

 costati, costis vel plicis circiter 15 parum prominentibus (in anfr. 

 ultimo minus conspicuis ct versus medium fere obsoletis) et trans- 

 versim subdistanter maxime profunde sulcati ; apertura elongata, 

 longitudinis totius \ fere ajquans ; labrum tenue, prope suturam 

 leviter sinuatum ; columella rectiuscula, simplex ; canalis brevis, 

 latiusculus. 



Long. 11 mill., diam. 3^. 



