PURPURA. 



Plate XIII. 



Species 71. (Mus. Brit.) 



ruRPUKA QuoYl. Fitrp. testa subfuiiformi, virinque pro- 

 dudd, anfractibus superne concavo-depresiis, loiigitudi- 

 naliter siMilissime lambmlm, codk Urisque rugo-sk ant 

 scabrosk cinctk ; colmnelld parvd, labro intus crenato ; 

 albidd autfiiscesccide, aperlura fauce purpan'o-fuscd. 



Quoy's Purpura. SheU somewhat fusiform, produced at 

 each end, whorls concavely depressed round the upper 

 part, lonsiitudinally very finely laminated, encircled 

 with roua;h and scabrous ribs and ridges ; columella 

 excavated, aperture small, lip crenated within ; \^"hitish 

 or light brown, interior of the aperture purple brown. 



I'urpura ruyom, Quoy, Zool. Voy. de I'Astrolabe, pi. 38. 

 f. 19 to 21. 



Hab. New Zealand. 



M. Kiener appears to have coufoundcd this interesting 

 little species with the following. 



Species 72. (Mus. Cuming.) 



Purpura scobina. Piirp. testa oblongo-ovatd, anfractibus 

 coiwe.rk, lirk tramversk et lougitudlnalibus creberrlme 

 clathratk ; nigricaute-fmcd, lirk tramversk interdum 

 albk, columelld piirpureo-fuscd, aperturce fance carii- 

 lescente. 



The file Purpura. Shell oblong-ovate, whorls convex, 

 very closely latticed with transverse and longitudinal 

 ridges ; blackish-brown, transverse ridges sometimes 

 white, columella purple-brown, interior of the aper- 

 tm'e blueish. 



QuoY, Zool. Voy. de I'Astrolabe, pi. 38. f. 12 and 13. 



Hah. New Zealand. 



An extremely variable species, but one whose different 

 phases exhibit a good specific affinity. 



Species 73. (Mus. Cuming.) 



PuRPUR.\. NUX. Ptirp. testa ovatd, crassiusctdd, subventri- 

 cosd, anfractibus coiwexk, transversini irregulariter 

 multiUraiis, lirarum interstitik laniink decimsaik, labro 

 intus dentato ; oUvaceo-fusco varid, hie illic aWipunc- 

 tatd, columelld et aperturce faiKe albk. 



The nut Purpura. SheU ovate, rather thick, somewhat 

 ventricose, whorls convex, encircled with numerous 

 ii'regular ridges, the interstices between which are 

 crossed with minute laminee, lip toothed within ; 

 variegated with olive brown, dotted with white, 

 columella and interior of the aperture white. 



October 



Hab. 



An interesting species, not immediately allied with any 

 liitherto described. 



Species 71. (Mus. Brit.) 



Purpura spiralis. Purp. testa ovatd, temii, influtd, 

 costis quink prominentibns conspieue spiraliter cinctd, 

 interstiiiis longitudhialiter striatis, costis latk, planatk, 

 Icevibus, laieribus excavatk ; albido-fuscescente, costis 

 rufo-fuscis. 



The spiral Purpura. SheU o%'ate, thin, inflated, conspi- 

 cuously spu'aUy encii'cled with five prominent ribs, 

 smooth and flattened at the summit, excavated at the 

 sides, with the interstices striated longitudinally ; 

 wliitish-brown, ribs reddish brown. 

 Purpura trochlea, var. Kiener, Icon. Coq. viv. pi. 28. 

 f. 75 and 75 a. 



Hab. ? 



" It is very possible," says M. Deshayes, " that tliis shell 

 may constitute a species distinct from the P. ciiigulata 

 (P. trochlea. Lam)." There cannot, I think, be a doubt 

 of it, it is uniformly larger, more inflated, and has a larger 

 number of ribs, 



Species 75. (Mus. Cuming.) 



Purpura Scalauiformis. Purp. testa acuminutn-turritu, 

 anfractibus superm angulafis, suturis depresses, infra 

 angulum carinatis et striatis, carimis irregtdaribus, 

 acutis ; exlus intusque albd. 



The Scalaria-shaped Purpura. SheU acuminately 

 tiu-reted, whorls angulated round the upper part, de- 

 pressed at the sutures, keeled and striated beneath 

 the angle, keels in-egular, sharp ; white within and 

 ivithont. 



Lamarck, Anim. sans vert. (Deshayes' edit.) vol. x. p. 73. 



Hub. Juan Fernandez (in rocky places at low water) ; 

 Cuming. 



The sculpture and general tone of this shell so far re- 

 sembles the P. galea, that it has been considered an 

 elongated growth of that species. The P. deform is of 

 Lamarck, according to Kiener, is a monstrosity of the 

 P. galea ; and the P. brevis of De Blainville, the young of 

 the same. 



1S46. 



