NERITA.— Plate III. 



Chemnitz, Conch. Cab. vol. v. pi. 191. f. 1958, 1959. 

 Hah. Port Essington, North Australia. Philippine Is- 

 lands. 

 Of an elegant oblong narrowly globose form, closely 

 sculptured throughout with neat puiijle-black linear ridges 

 upon a pink-ash ground, the columellar area being con- 

 spicuously stained with yellow. 



Species l-l. (Mus. Cuming.) 

 Nerita Ascensionis. Ner. testa ovato-turbinatd, spird 

 subexsertd, mifractilms mperm concavo-impresm, spi- 

 raliter cosfatis, costis rotundatis, subelevatis, undique 

 tenuiserratis, interstitiis excavatis, aperturd vix in- 

 crassatd, area columdlari obsolete corriujatd, biden- 



tatd; lutescente-albd, costis maculis griseo-nigricaitli- 

 bus dense tessellatis, area columellari lutesceute. 



Tub Ascension Nerite. Shell ovately turbinated, spire 

 rather exserted, whorls concavely impressed at the 

 upper part, spirally ribbed, ribs rounded, rather ele- 

 vated, finely serrated throughout, interstices exca- 

 vated, aperture scarcely thickened, columellar area 

 obsoletely wrinkled, two-toothed ; yellowish-white, 

 ribs thickly tessellated with grey-black s])ots, colu- 

 mellar area yellowish. 



Hab. Island of Ascension. 



Of rather light growth, speckled throughout on the ribs 



with clouded blue-black or grey spots, the interstices being 



of a yellowish or pinkish hue. 



