NATICA. 



Plate XII. 



Species 47. (Mus. Cumiug.) 



K.VTICA RAPULUM. Nat. teslii mignste proftmde nmbili- 

 ctttd, globosd, teuuiculd, veuiricosd, sjiird parvd, su6- 

 exserfd, apice acuta, anfraciibus rolundalis, 7timuth- 

 ■ume deciissaiim striatis, apertttrd lunari-ovatd, colii- 

 melld fenuiculd, callosd ; opaco-albd, epidermide stru- 

 mined partim indidd. 



The little turnip Natica. Shell narrowly dcei)ly iim- 

 bilicated, globose, rather thin, ventricose, spire small, 

 slightly exserted, sharp at the apex, whorls rounded, 

 very minutely decussately striated, aperture linear- 

 ovate, columella rather thin, callous ; opake-white, 

 partially covered with a straw-coloured epidermis. 



Hab. Payta, Peru (on mud-banks) ; Cuming. 



A light, opake-white species, partially covered with a 



light straw-coloured epidermis, with somewhat the form 



of an AmpuUaria. 



Species 48. (Mus. Cuming.) 



Xatica conica. Xat. testd anguste partim obtecic nmbi- 

 Ikatd, oblongo-conicd, so/idd, spird awpld, exicrtd, 

 anfractibus oblique tenuistriatis, convexis, infra siitn- 

 rarii depresso-concavis, aperturd Itmari-ovatd, columeUd 

 rnllosd, encauslo solidiiisculo, super mubilicum revoluto; 

 fidvo-cinered, columelld fmneo-caslaneo iincld. 



The conical Natica. Shell with a narrow partially 

 covered umbilicus, oblong-conical, solid, spire large, 

 exserted, whorls obliquely finely striated, convex, de- 

 pressly concave beneath the suture, aperture luuar- 

 ovate, columella callous, enamel rather solid, rolled 

 back over the umbilicus ; fulvous-asli, culumella 

 stained with smoky-chestnut. 



li.MlARCK, Anim. sans vert. (Deshayes' edit.), vol. viii. ji. 

 G33. 



llnb. Australia. 



Characterized chiefly by its conically turbinated form, 



and by the smoky-chestnut tinge of the columellar enamel. 



Species 49. (Mus. Cumiug.) 



Natica unifasciata. Nat. testa umbilicald, vciitricoso- 

 globosd, spird subexsertd, apice aciitd, anfractibus mi- 

 nute deeussatim striatis, rotundatis, superne leviter de- 

 pressis, aperturd lunai-i-ovatd, efusd, columeUd teuui- 

 culd, callositate spirali mubilicum fere implente ; vio- 

 lascente-cinered, fascia albidd liiieari supra medium 

 ringulatd. 



The one-banded Natica. Shell urabilicated, ventri- 

 cosely globose, spire rather exserted, sharp at the 

 apex, whorls minutely decussately striated, rounded, 

 slightly depressed at the upper part, aperture lunar- 

 ovate, effused, columella rather thin, with a spiral 

 callosity nearly filling the umbilicus ; violet-ash, en- 

 circled with a whitish linear band above the middle. 



Lamauck, Auini. sans vert. (Dcshayes' edit.), vol. viii. p. 



(•.40. 

 Hub. Eay of Panama (on mud-banks at low water) ; 



Cuming. 



This species has, particularly, the form and general as- 

 pect of an JmpuUuria. It has a shelly operculum. 



Species 50. (Mus. Cuming.) 



Natica monilifeka. Nat. testd anguste prof mde umbili- 

 catd, globosd, subventricosd, spird exsertd, apice acutd, 

 suturd lineari-iiiipressd, anfractibus rotundatis, Icevi- 

 gatis, aperturd lunari-ovatd, columeUd temie callosd; 

 fuho-glnucescente, superne maculis spadiceis serie unicd 

 cingulafd. 



The necklace-marked Natica. Shell narrowly deeply 

 umbUicated, globose, subventricose, spire exserted, 

 sharp at the apex, with the suture linearly impressed, 

 whorls rounded, smooth, aperture lunar-ovate, co- 

 lumella thiidy callous; pale yellowish-glaucous, en- 

 circled at the upper part with a single row of pale 

 fawn spots. 



Lamarck, Anim. sans vert. (Deshayes' edit.), vol. viii. p. 

 638. 



Nerila glaucina, Pennant (not of Linn;eus). 

 Nerita catena. Da Costa. 

 Natica castanea, Lamarck. 

 Natica squalida, Macgillivray. 



Hub. Em-opean seas. 



Well characterized by the necklace of fawn-red spots 



wiuch encircles the whorls next the suture. 



Species 51. (Mus. Cuming.) 



Xatica lehcoph^a. Nat. testd subanguste pnfunde 

 umbilicatd, globoso-ventricosd, spird breviusculd, ob- 

 tufid, anfractibus rotundatis, ad suturam obsolete pli- 

 ca/is, ojierfurd piiriformi-ovatd, columeUd callosd, en- 

 Cdiislij ■■iiqirr niiibilicum remluto ; plumbeo-grised, infra 

 snlnniiii rufu tincHi, labro et encauslo columellari .lan- 

 guineo-rufis. 



The grey Natica. Shell rather narrowly deeply um- 

 bilicatcd, globosely ventricose, spire rather short, ob- 

 tuse, whorls rounded, faintly plicated at the suture, 

 aperture pyriformly ovate, columella callous, enamel 

 rolling back over the umbilicus ; leaden-grey, stained 

 with i-ed beneath the sutme, lip and columellar enamel 

 red. 



Ilab. Australia. 



A very characteristic leaden-grey shell, of light Amput- 



fo;-ia-like form, stained with blood-red along the edge of 



the lip and columellar enamel, and round the upper edge 



of the whorls next the suture. 



Aprd, 1855. 



