NATICA. 



Plate XX. 



Species 87. (Mus. Cuming.) 

 Natica collaeia. Nat. testa mnbilicatd, glohosa, sjiird 

 iubproducta, sntiird ptanaid, leviter canalicuhitd, an- 

 fractibm convexis, aperturd semihinari, cohoiielld te- 

 nuicuM, calJositate parvd colimmari wmhiliciim in- 

 trante ; albidd, striyis pallide rufescente-fuscis taidatix 

 pictd, strigis ampHi paticioribtis in fascid pateute infra 

 suturam. 

 The collar Natica. Shell iimbilicated, globose, spire 

 rather produced, suture flattened, slightly channelled, 

 whorls convex, aperture semilunar, columella rather 

 thin, with a small columnar callosity entering the 

 umbilicus ; wliitish, painted with light waved reddish- 

 brown streaks, streaks beneath the sutui'e large and 

 fewer, in an open band. 

 Lamarck, Anim. sans vert. vol. viii. p. 638. 

 Hab. Senegal. 



The open zigzag waves which fonn a collar, so to speak, 

 round the upper part of each whorl, are always charac- 

 teristic of this species. 



Species 88. (Mus. Cuming.) 



Xatica clausa. Nat. iestd imperforatd, ylobulari, tenni- 

 culd, spird hrevi, snbexsertd, anfractibus ■V(peme sub- 

 depressis, deinde rotundaiis, lavigatis, aperturd hmari- 

 ovatd, coliimeUd tenui, callosd, caUositate mubilicurn 

 claudente ; albidd aut fuscescente. 



The closed Natica. Shell imperforated, globular, rather 

 thin, spu-e short, rather esserted, whorls a little de- 

 pressed round the upper part, then rounded, smooth, 

 aperture lunar-ovate, columella thin, caUous, callosity 

 closing the umbilicus; white or brownish. 



BoRDEEip and Sowerby, Zool. Journal, vol. iv. p. .360. 



Hub. North Sea. 



Of a delicate white or brownish colour, generally thin, but 



varpng in substance according to circumstances of locality. 



Species 89. (Mus. Cuming.) 

 Natica Inch. Nat. tedd ohted'e mnbilicatd, orhictdari- 

 depressd, solidiusculd, spird pluuo-obtusd, anfruciibus 



angustis, .viperne declim-ronre.vis, inferne rotundatis, 

 /i/in/Uis.si„/e dt'Cii.mitim. .Hriatis, aperlvrd 1 itnari-ovatd, 

 //ori-on/fi/i, cohtmeUd si(bcicii/e adlosd, caUositate lata, 

 rotmidatd, in ared umbilicali ; nitente-albd. 



Ince's Natica. Shell with a covered umbilicus, orbi- 

 cularly depressed, rather solid, spire flatly obtuse, 

 whorls narrow, slantingly convex at the upper part, 

 rounded at the lower, very minutely decussately 

 striated, aperture lunar-ovate, horizontal, columella 

 rather sharply callous, callosity broad, round, in the 

 umbilical area ; shining white. 



Philippi, MS. Mus. Cuming. 



Hab. Torres Straits, Australia ; Capt. Incc. 



A species of solid texture, and of peculiarly depressed 



growth, with a large solid button-like callosity filling up 



the umbilical area. 



Species 90. (Mus. Cuming.) 



Natica Zelandica. Nat. testd vix tmibilicatd, globoso- 

 Inrbinatd, spird stihexsertd, anfractibus snperne declivi- 

 conre.vis, deinde rotundatis, glabris, aperturd Iniiari- 

 otntd, columelld tenui, caUositate rotuudnfd in urea 

 iinibilicnii ; liiteo-spadiced, maculis fuscis circua/is 

 quinquefa-mald. 



The New Zealand Natica. Shell scarcely umbilieated, 

 globosely turbinated, spii-e rather esserted, whorls 

 slantingly convex on the upper part, then rounded, 

 smooth, aperture lunar-ovate, columella thin, with a 

 round callosity in the umbilical area ; yellowish-fawn, 

 cncii-cled with five zones of arched brown spots. 



QuoY and Gaimard, Voy. de I'Astrolabe, vol. ii. p. 237. 

 pi. 66. f. 11 and 13. 

 Natica afjinis, Philippi. 



Hab. New Zealand. 



Of a smooth porcelain-like substance, painted with five 



rows of arched spots. 



Pig. 91. (Mus. Cuming.) 

 For description of this species. A', sulcata, see next Plate, 

 Sp. 95. 



Maj% 1855. 



