NATICA. 



Species 108. (Fig. a, b, Mus. Cuming.) 



Natica umbtlicata. Nat. testa anqAltvr obliqui exca- 

 oate umbilicatd, convexo-depresscl, Ealiotiformi, tenui, 

 semipdluciild, qnrd hrevi-mmd, laterali, anfractihus 

 coKWxis, temdter dwussaiim striatis, ultimo maximo, 

 injlaio, aperturd ovatd, marg'mibus apjiroximrttis ; siib- 

 pelliicido-albd, ferrugineo-rvfo promiscue stiigatu H 

 macidatd. 



The umbilicated Natica. Shell largely obliquely ex- 

 cavately umbilicated, convexly depressed, Haliotis- 

 shaped, thin, semitransi5aront, spire very short, la- 

 teral, whorls convex, finely decussately striated, last 

 whorl much the largest, inflated, aperture ovate, with 

 the margins approximated ; subtransparent white, 

 promiscuously streaked and spotted with rust-red. 



QuoY, Voy. de I'Astrolabe, vol. ii. p. 234. pi. 6(5. f. 22 

 and 23. 



Hab. Van Diemen's Land ; Eonald C. Gunn. 



A light semitransparent Haliotis-shaped shell, with a 

 veiy peculiar obliquely excavated umbilicus. 



Species 109. (Mus. Cuming.) 

 Natica teisekiata. Nat. testa snbanguste mnbilicutd, 

 glohosd, sptrd breviuscidd, sidurd leviter impreum, ai/- 

 fractibiis rotundatls, obsolete plicato-striatls, aperturd 

 ovatd, columelld super iie calloso-reflexd ; Imdo-grised, 

 obscure triseriutd, hie illic ferrugineodinctd, callosi- 

 tiite opaco-albd, apertures fauce castaned. 

 The three-banded Natica. Shell rather narrowly 

 umbilicated, globose, spire rather short, suture 

 slightly impressed, whorls rounded, ftuntly plicately 

 striated, aperture ovate, columella callously reflected 

 at the upper part ; livid grey, obscurely three-banded, 

 here and there rust-tinged, callously opake-white, in- 

 terior of aperture chestnut. 

 Say, Journ. Acad. Nat. Sci. Philadelphia, vol. v. p. 209. 

 Hab. Bay of Massachusetts, United States. 



The opake-white callosity and chestnut interior of this 

 shell, contrast in a characteristic manner with its rust- 

 tinged livid blue exterior. 



Species 110. (Mus. Cuming.) 

 Natica flava. Nat. iestd imperforatd, globosd, tenui, 

 tumidiusculd, spird brevissimd, depressd, anfractibns 

 convexis, ultimo midtu niaximo, aperturd ovatd, sub- 

 ampld, columelld temie refiexd, suhcontorto ; pelluciJo- 

 albd, epidermide corned decidudflam indutd. 

 The yellow Natica. Shell imperforated, globose, thin, 

 rather swollen, spire very short, depressed, whorls 

 convex, the last much the largest, aperture ovate. 



rather large, columella thinly reflected, slightly twisted ; 



transparent white, covered with a yellow deciduous 



horny epidermis. 

 Gould, Silliman's Journ. vol. xxxviii. p, 19('>. Invert, of 



Massachusetts, p. 239. f. 162. 

 Hab. Massachusetts Bay, United States. 



A light inflated globose transparent white shell, covered 

 with a yellow horny deciduous epidermis, the spire being 

 almost on a level with the upper margin of the aperture. 



Species 111. (Mus. Cuming.) 

 Natica Sagraina. Nat. testd subobtecti umbilicatd, ob- 

 lique globosd, spird brevi, subobtusd, uufractibus su- 

 perue declivibus, delude convexis, lavibus, politis, aper- 

 turd lunari-ovatd, columelld callositate lata amptd 

 inidjUicum fere iegente ; alhidd, lineis griseo-pnrpu- 

 rasci'ulibus dense oblique undatd, callosilate fusces- 

 ceute. 

 The Sagua Natica. Shell with a nearly covered um- 

 bilicus, obliquely globose, spire short, rather obtuse, 

 whorls slanting round the upper part, then convex, 

 smooth, polished, aperture lunar-ovate, columella 

 with a large broad callosity nearly covering the um- 

 bilicus ; whitish, densely obliquely waved with grey- 

 ish-purple lines, callosity brownish. 

 D'Orbigny, Moll. Cuba, pi. IS. f. 20 and 22. 

 Hab. Malaga. 



A smooth porclain-like species, closely painted through- 

 out with obliquely waved greyish-purple lines ; the umbi- 

 licus being nearly covered by a broad button-like callosity. 



Species 112. (ilus. Cuming.) 

 Natica Colliei. Nut. l,:sl.i xutiiiuiiilitrr iiuihilicnld, glo- 

 bosd, spird brevi, subr.r.^, rfd, luifnii-tihiin ruluiidaHs, 

 superne obsolete plicato-liruHs, aperturd lunari-ovatd, 

 columelld callositate solidd columnari umbilicum in- 

 trante ; albidd, macidis subquadratis, aurantio-spadi- 

 ceis, interdum conjlueutibus, seriatim pictd. 

 Collie's Natica. Shell rather largely umbilicated, glo- 

 bose, spire short, rather exserted, whorls rounded, 

 obsoletely plicately ridged round the upper part, 

 aperture lunar-ovate, columella with a solid columnar 

 callosity entering the umbilicus; whitish, painted 

 with rows of somewhat square orange-fawn spots 

 sometimes flowing together. 

 Eecluz, Pro. Zool. Soc. 1843, p. 207. 

 Hab. Swan River, Australia (on stones at low water); 

 Lieut. Collie. 

 Distinguished mainly by its large obliquely square 

 orange-fawn spots, sometimes flowing longitudinally to- 

 gether. 



