2 EDGAR A. SMITH. 



rather more produced than the other. The fine decussation 

 of the surface between the costae and the spiral lirte is only 

 visible under a powerful lens or microscope. 



Cerithiopsis (Sella) natalensis n. sp. PI. I, fig. 2. 



Testa subulata, nigro-fusca, ad apicem pallida; anfractus 

 circiter decern, convexi, regulariter acerescentes, sutura 

 obliqua sejuncti, liris spiralibus ad quinque instructi, liris 

 incrementi fortibus oblique arcuatis sculpti, inter liras 

 spiraliter tenuiter striati ; ultinius infra concentrice striatus ; 

 apertura irregulariter rotundata, intus nigrescens ; columella 

 arcuata, callo tenui reflexo induta, ad basim oblique 

 truncata. 



Longit. 10 mm., diam. 2"5. Apertura 1"75 longa, 1'25 lata. 



Hab. — Tongaat, Natal (Burnup). 



Very like Sella attenuata Hedley from Port Jackson, 

 but with stronger lines of growth and more equal spiral 

 cords, and intermediate thread-like lines. On crossing the 

 spirals these become almost granulated. The nuclear whorls 

 are wanting in the specimen described. 



Grlyphis levicostata n. sp., PI. I, figs. 3-.5. 



Testa oblongo-ovata, autice leviter angustata, mediocriter 

 elata, alba, fusco-olivaceo radiata, circa foramen interdum 

 pallide livida costulis numerosissimis vix elatis et liris in- 

 crementi tenuibus confertis undulatis sculpta ; foramen 

 magnum, oblongum, intus callo livido postice truncato 

 succinctum ; superficies interna albo-pellucida lineis opacis 

 albis radiata, ad marginem lateraliter paulo elatum tenuiter 

 crenulata. 



Longit. 35, diam. 23, alt. 14 mm. 



Hab. — Tongaat and Port Shepstone, Natal (Burnup). 



This species is remarkable for the fineness of its sculpture, 

 and the elongate cap-shaped form. The radiating riblets are 

 very little raised, and separated merely by impressed lines 



