500 Mr. E. A. Smith on neiv Sjjecies o/Plenrotomiclse. 



Pleurotoma {Clionella) Krausii. 



Testa turrita, albida, maculis punctulisque purpureo-fuscis pra3- 

 eipue super anfractuum dimidium superius variegata, epidermide 

 tenuissima viridi-olivacea induta ; anfract. 9-10, medio excavati, 

 deinde angulati, superue Iseves, inferne costis subnodosis (in anfr. 

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

 tura uudulata marginata discreti ; apertura albida, fusco maculata, 

 longitudinis testae |- sequans ; labrum tenue, paululum infra 

 suturam leviter sinuatum ; canalis brevis, obliquus ; columella 

 arcuata. 



Long. 29 mill., diam. 10. 



Hab. Cape of Good Hope. 



This 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. semicostata^ Kiener. 



Pleurotoma [Clionella) hipartita. 



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

 vacea dilute rubescens vel albida, liueis graeillimis confertis 

 dilute fuscis longitudinaliter picta, et strigis obliquis subremotis 

 fuscis infra suturam ornata ; anfract. 10, plani. medio sulco spiral! 

 bene defiuito minime profundo sed latiusculo exsculpti, infra sul- 

 cum plicis nodosis obliquis (in anfr. ultimo fere obsoletis, in supe- 

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

 totius ^ aequans, infra periplieriam striis spiralibus paucis circiter 

 7-8 cinctns ; apertura intus dilute purpureo-carnea, longitudine 

 testae |- aequans, basi late canaliculata; columella arcuata, superne 

 callo nodulosa, parvo, munita; labrum tenue, ad sulcum aliquanto 

 profunde scissum. 



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 which 

 the whorls are divided into three parts. Below the suture 

 exists 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 irregulari circa 

 anfractuum partem inferiorem ornata ; anfract. 8, convexiusculi, 



