new Species o/Tleurotoraidfe. 319 



to the right, thus givhig tlie aperture an auriform aspect. 

 The teeth or liratious both within the labrum and on the 

 columella are not at all strongly developed. 



Pleurotoma [Drillia ?) 'pupiformh. 



Testa oblonga, angusta, subpupiformis, leviter turrita, nitens, alba, 

 ad apicem rufescens ; anfractus 8, primi duo laeves, convexiusculi, 

 tertms medio cariuatus, cseteri sutura carinata sejuncti, costis 

 bituberculatis 10 iustructi ; anfr, ultimus infra tuberculorum 

 series duas, liris spiralibus tenuibus circiter 10 cinctus ; apertura 

 minima, lougitudinis totius ^ vix aeqiians ; labrum tenue, superne 

 pauluhim infra suturam profunda incisum, j^rope medium macula 

 rufeseenti notatum ; columella callo tenui iuduta, juxta suturam 

 tuberculo valido rufeseenti munita ; canalis breviusculus, angus- 

 tiusculus. 



Long. 4i mill., diam. \\. 



Hah. Persian Gulf {Col. Pelly). 



This is a very pretty and remarkable little species. The 

 whorls increase but slowly and the last three are nearly of the 

 same width. They are divided at the suture by a fine keel, 

 and a double series of largish and rather acute tubercles sur- 

 round the middle. 



Pleurotoma ( Crassispira ?) hebes. 



Testa elougata, subpjramidalis, flava, zona purpureo-rufa circa 

 suturam et altera circa anfr.' ultimi medium oruata, caudaque 

 eodem colore tincta ; anfractus G, minime convexi, costis confertis 

 circiter 17 et liris spiralibus 4-5 (in anfr. ultimo ad 13) supra 

 costas granosis concinne clatbrati ; apex obtusus ; apertura per- 

 parva, longitudinis totius -| vix tequans ; labrum extus costa 

 ultima lata incrassatum, superne paululum infra suturam levis- 

 sime siuuatum ; canalis brevis, angustus. 



Long. 5 mill., diam. 2. 



Hab. ? 



This pretty species is well characterized by its coloration 

 and grauulous clathration. For the size of the shell the apex 

 is remarkably large and obtuse. 



Pleurotoma [MangiUa) dentlculata. 



Testa oblonga, angusta, lutescens, prope suturam pallida fusco 

 tincta, circa medium anfr. ultian lineis duabus fuscis cincta, ad 

 caudam labrique basim fusco tincta ; anfractus 9 ? (apice ab- 

 rupto), reliqui 6 convexiusculi, costis tenuibus flexuosis 12 (in 

 aufr. ultimo basi continuis) iustructi ; apertura angusta, longit. 

 totius ad Y^9 lequans ; labrum incrassatum, superne leviter sinua- 

 tum, intus denticulis circiter 10 munitum ; columella callo tenui 

 laevi induta ; canalis brevis. 



Long. 9^ mill., diam. 2^. 



2o* 



