NATICA, 



Species 10. (^^Eus. Cuming.) 



Natica pyeifoumis. Nat. testa oUecte umbilkatd, oh- 

 lougo-pyriformi, spird parvd, mamillari, atifractihns 

 superiie coiicavo-declivibus, delude convexis, ultiiiio 

 siibeffuso, aperturd semiltmari, colmnelld callosd, cal- 

 toutate lata, mnbilicimi impleide ; nitente-ebiirned. 



The pear-shaped Natica. Shell with a covered um- 

 bilicus, obloug pear-shaped, spire small, mamillary, 

 whorls concavely slanting round the upper part, then 

 convex, the last somewhat effused, apertm-e semi- 

 lunar, columella callous, callosity broad, tilling np 

 the umbilicus ; shining ivory-white. 



Recluz, Pro. Zool. Soc. 1843, p. 311. 



Hab. Ilo Ilo, Island of Panay, Phihppines (on the sand at 



low water); Cuming. Mouth of the Huan Iviver, 



Australia (in sandy mud, ten fathoms) ; Lieut. Collie. 



A polished ivoiy species, chiefly distinguished by its 



oblong-pyriform effused growth. 



Species 17. (Mus. Cuming.) 



Natica Petiveriana. Nat. testa aperti umbilkatd, de- 

 presso-orbicidari, subtus concavd, spird brevi, parum 

 exsertd, anfractibus convexis, lavlbtis, vel minute de- 

 cussatim striafis, aperturd lunari-ovatd, Jwri:oufali, 

 columella tenuicnld, caUositate proiuiuente spirali sul- 

 cata, mnbilico subanrjidato-excavato ; cinereo-griscd, 

 pal/ide carulesceide stricjatd, subtus alliidd, callosi- 

 tate et aperturee fance castaneis. 



Petiver's Natica. Shell operdy umbilicated, depressly 

 orbicular, concave beneath, spire short, but little ex- 

 serted, whorls convex, smooth, or minutely decus- 

 sately striated, aperture lunar-ovate, horizontal, colu- 

 mella rather thin, with a prominent grooved spiral 

 callosity, umbilicus slightly angularly excavated ; ash- 

 grey, faintly blue-streaked, whitish beneath, callosity 

 and interior of the aperture chestnut. 



Recluz, MS., Mus. Cuming. 



Hab. Catbalonga, Island of Samar, PhiKppiues (on sand 

 banks at low water) ; Cuming. 



Distinguished from several allied species of the same 

 type, by its compressly orbicular form. 



Species IS. (Mus. Cuming.) 



Natica maculata. Nat. testa umbilicafd, ijlolmd, tur- 

 gidd, spird paululicm exsertd, aiifractibns lavibus, vel 

 obsolete strialis, rotmtdatis, aperturd semilnnari, levi- 

 ter effitsd, columelld callositate spirali umbiticiim ui- 

 traute ; Uvido-albidd, fulvo-sanguineo viaciihtd, mu- 

 cidis obscure trizonatis, iutus rubescente-violaced. 



The spotted Natica. Shell umbilicated, globose, tur- 

 gid, spire a little exserted, whorls smooth, or obso- 

 letely striated, rounded, aperture semilunar, sbghtly 

 effused, columella with a spiral callosity entering the 

 umbilicus; livid white, spotted with fulvous-red, 

 spots obscurely three-zoned, interior reddish-violet. 



Desiiates, Anim. sans vert. vol. viii. p. 045. 

 Natica dense maculata, Chemnitz. 

 Natica adspersa, Menke. 

 Natica millepuudata, var., Philippi. 



Ilab. Mediterranean. 



The spots of this well-known species are more or less 



promiscuously blotched, and gather obscurely into IIhtc 



bands. 



Species 19. (ilus. Cuming.) 



Natica columnaris. Nat. testd aperte perspectice um- 

 bilicatd, ovato-globosd, venttkosd, spird mJuuUl, i-i.r 

 elevatd, anfractibus conve.vis, lavigatis, ad suturiim 

 corrugato-striatis, aperturd lunari-ovatd, subumpld, 

 effusd, colmnelld callositate conspicud spirali, umbdicu 

 late angulato-excavato ; eburned. 



The columnar Natica. Shell openly perspectively um- 

 bilicated, ovately globose, ventricose, spire very small, 

 scarcely raised, whorls convex, smooth, wrinkle-stri- 

 ated at the suture, aperture lunar-ovate, rather large, 

 efi'used, columella with a conspicuous spiral callosity, 

 umbilicus broadly angularly excavated ; ivory-white. 



Recluz, Petit, Journ. Conch, vol. i. p. 391. 



Uab. Pasacao, Province of South Camarines, Island ul' 

 Luzon, Philippines (iu sandy mud at six fathonjs) ; 

 Cuming. 

 A shining white neritoid species, ventricose and effused, 



with a peculiarly open spirally excavated umbilicus. 



Api-il, 1855. 



