NATICA. 



Species 20. (Mus. Cuming.) 

 N.\TICA AURANTiA. Nat. tedd obkcte miiliUcald, ohlottr/o- 

 ovatd, crassissimd, ponderosd, spird parvd, subcallom, 

 apice didincto, anfradibus -minutissime decusmtim 

 driatk, mperne concavo-dedivibus, ieinde subplaii/i- 

 luto-co/ifp.ri.':, apertiird parra^ semilnnari, cohuneJld 

 callosd, call nail II 1 1' hild, tii^ihiViciim hiiplnnle ; vividi; 

 fulvo-annii/lui, riillo.vfalf rhiiriied. 

 The orange Natica. Shell with a covered umbilicus, 

 obloiig-ovate, very thick, ponderous, spire small, 

 rather callous, apex distinct, whorls very minutely 

 decussately striated, concavely slanting at the upper 

 part, then somewhat flatly convex, aperture small, 

 semilunar, columella callous, callosity broad, filling 

 up the umbilicus ; briglit fulvous orange, callosity 

 ivory-white. 

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



633. 

 Hab. Island of Ticao, Philippines (on the reefs) ; Cuming. 

 A shell of very solid ponderous growth, of a brilliant 

 fulvous-orange colour, distinguished by the delicate con- 

 trast of the bright ivory-white enamelled callosity, which 

 fills up the umbilicus. 



Species 31. (Mus. Cuming.) 



Natica problematica. Kal. tedd laQ aperte lunbUicafd, 

 depnsso-orbicidari, subtus planatd, spird vix elevntu 

 anfradibus convexis, siiperno concavo-drpressis et sub- 

 tiliter plicato-s/ria/ix, u per turd liniari-oriitd, lwri:oii- 

 tali, columelld caltusitnlr parrd, iiuihijico hdisdmi cx- 

 cavaio; fflaitco-ci/wreii, rcrs/rs apicmi cn-rnleiiccufe,ca/- 

 lositate etfauce apertnra castanns. 



The problematic N.atica. Shell broadly openly um- 

 bilicated, depressly orbicular, flattened beneath, spire 

 scarcely raised, whorls convex, concavely depressed, 

 and finely plicately striated at the upper part, aper- 

 ture lunar-ovate, horizontal, columella with a small 

 callosity, umbilicus very broadly excavated ; glaucous- 

 ash, bluish towards the apex, callosity and interior 

 of the aperture chestnut. 



Naticg intermedia, Eecluz (not of Philippi). 



Hab. China. 



A depressed glaucous species, bluish towards the apex, 



but tinged with bright yelk-yellow beneath the suture. 



Species 22. (Mus. Cuming.) 



Natica Powisiana. Nat. testa aperte oblique iirnbili- 

 catd, ovato-vcnlricosd, spird brevi, siibcallosd, apice 

 aciild, anfradibus hcribiis, nitentibus, snperne siibcal- 

 losis, coiivexis, apertiird semilnnari, colitiiielld callosi- 

 tale mediocri; vivide ridienie-spadiced, fascia vitellim 

 distindd juxta suturam, callositate et columelld ebur- 



Powis's Natica. Shell openly obliquely umbilicated, 

 ovately veutricose, spire short, rather callous, sliarp 

 at the apex, whorls smooth, shining, rather callous 

 at the tipper part, convex, aperture semilunar, co- 

 lumella with a moderate callosity; bright reddish- 

 fawn, with a distinct yelk-yellow band next the su- 

 ture, callosity and columella ivory-white. 



Recluz, Pro. Zool. Soc. 1SI.3, p. 210. 



Hab. Moluccas; Cuming. 



This fine species is well characterized by the light band 

 which encircles the whorls next the suture, it being pecu- 

 liarly distinctly defined. 



Species 33. (Mus. Cuming.) 



Natica albula. Nat. testa obtede timbilicatd, depresso- 

 ijlobosd, siibventricosd, snbtus planatd, spird minutd, 

 apice acuta, anfradibus subqiiadrato-convexis, politis, 

 obsolete sulciito-sfrialis, aperiiird luuari-ovatd, sub- 

 effiisd, coltiiiielld densii callosd, callositate mnbiUcimi 

 inipleute ; iiiteiite-eburiied. 



The whitish Natica. Shell with a covered umbibcus, 

 depressly globose, subventricose, flattened beneath, 

 spire very small, sharp at the apex, whorls somewhat 

 s(piarely convex, polished, obsoletely groove-striated, 

 aperture lunar-ovate, somewhat eft'used, columella 

 densely callous, callosity filling up the umbilicus ; 

 shining ivory-white. 



Eecluz, Petit, Journ. Conch, vol. ii. p. 194-. 



Hab. Pasacao, Province of South Caraarines, Island of 

 Luzon, Philippines (in sandy mud at a depth of ten 

 fathoms) ; Cuming. 



A shining ivory-white species, of rather square, effused, 

 inflated growth, with a very small spire, and the umbilicus 

 tilled up with callous enamel. 



April, lS.5o. 



