500 ^Ir. E. A. Smith on neio Species 0/ Pleurotomidge. 



Pleurotoma [Clionella) Krausii. 



Testa turrita, albida, maculis punctulisque purpureo-fuscis pnc- 

 cipue super anfractuum dimidium superius variegata, epidermide 

 tcnuissima viridi-olivaceaindiita ; antract. 9-U', medio excavati, 

 deinde angulati, supcrne teves, inferne costis subuodosis (in anfr. 

 ultimo ad 12) instructi, striis spiralibus exilibus ubique ornati, su- 

 tura undulata marginata discreti ; apcrtura albida, fusco raaculata, 

 longitudinis testae |- ajquans ; labrum tenue, paululum infra 

 suluram leviter sinuatum ; canalis brevis, obliquus ; columella 

 arcuata. 



Long. 29 mill., diam. 10. 



Hah. Cape of Good Hope. 



Tliis species is easily recognized by the short subnodulous 

 ribs, which occupy scarcely the lower half of the whorls, the 

 depression round the middle and the raised band above, and 

 the manner of coloration, the purplish-brown maculations 

 being somewhat flexuous in the depression. Its nearest rela- 

 tion is P. semicostataj Kiener. 



Pleurotoma [Clionella) hipartita. 



Testa elongate ovato-fusiformis, sub epidermide tcnui griseo-oli- 

 vacea dilute rubescens vel albida, lineis gracillimis confertis 

 dilute fuscis longitudinaliter picta, et strigis obliquis subremotis 

 fuscis iufra suturam ornata ; anfract. 10, plani. medio sulco si)irali 

 bene definito minime profundo sed latiusculo exsculpti, iufra sul- 

 cum plicis nodosis obliqiiis (in anfr. xdtimo fere obsoletis, in supe- 

 rioribus ad 12) instructi ; anfract. ultimus magnus, longitudinis 

 totius 4 aequans, infra periphcriam striis spiralibus paucis circiter 

 7-8 cinctus ; apertura intus dilute purpurco-carnea, longitudine 

 testae | sequans, basi late canaliculata ; columella arcuata, supeme 

 callo nodulosa, paiTO, muuita; labrum tenue, ad sulcum aliquanto 

 profunde seissum. 



Long. 34 mill., diam. 12. 



Var. Testa anfr. ultimi costis obliquis baud obsoletis sed ad peri- 

 pheriam desinentibus. 



Hah. South Africa, Port Elizabeth. 



This very distinct form is peculiar for the manner in whicli 

 the whorls are divided into three parts. Below the suture 

 exi.sts a raised band, whitish, streaked obliquely with brown ; 

 below this runs a shallow furrow nearly as broad as the fillet; 

 and again below the sulcus are oblique subnodulous ribs 

 which occupy nearly half the whorl, these ribs disappearing 

 almost entirely in the body-whorl. 



Pleurotoma [Clionella) suhventricosa. 



Testa ovato-fusiformis, carneo-albida, zona lata irregular! circa 

 anfractuum partem inferiorem ornata ; anfract. 8, convexiusculi, 



