PURPURA.— Plate XI. 



M.Kiener is evidently unacquainted witli the P.s]>eciosa ; 

 it is quite distinct from the young of the F. hufo, to which 

 he refers it ; and may be recognised by the peculiar exact- 

 ness of the little squares into which its coloiu- is distributed. 



Species 57. (Mus. Cuming.) 



Purpura Caeolensis. Pnrp. testa, orhiculari, spird bre- 



vissimd, dejiresstt, anfmctihus transvmim fortiter 



biaeriatim tuberctdatis, suhtiUter iiiciso-lineatis, areia 



intermediis minutisdme regulariter striatis ; spadiceo- 



fuscescente, intus nived. 



The Charles Island Purpura. SheU orbicidar, spire 



very short, depressed; whorls encncled with two 



rows of very prominent tubercles, and finely engi-aved 



lines, the interstices between which are very minutely 



regularly striated ; light bay colour, interior snon^ 



white . 



Hab. Charles Island, Gallapagos (under stones at low 



water); Cuming. 



Care must be taken not to confound this species with 



the P. Callaoensis ; it is rounder and of more ventricose 



proportions, is much more strongly tuberculated, and the 



minute engraved detail is diiierent, the areas between the 



fine grooves being more numerously and regulai-ly striated. 



Species 58. (Mus. Cuming.) 

 Purpura sacellum. Purp. tedd fmifomi-ovatd, spird 

 acummatd; aiifraclibus supcrne amjulatk, ad angidum 

 et infra seriatim squamatis, squamis erectis, snhmun- 

 catis, peculiariter compressis, interstitiis minutissime 

 squamulatis ; luteo-albicaiiie, squamis fuscescentihus. 

 The temple Purpura. Shell fusiformly ovate, spii-e 

 acuminated, whorls angulated round the upper part, 

 encii-cled with rows of erect somewhat prickly pecu- 

 liarly compressed scales on and below the angle, the 

 interstices between which are very minutely scaled ; 

 yellowish white, scales light brown. 

 Miirex sacellum, Chemnitz, Conch. Cab. vol. x. p. 267. 



Hab. ? 



The shell figured by M. Kiener for the Purpura sacel- 

 lum, accords distinctly with Lamarck's description of the 

 species, but it is not the Murex sacellum of Chemnitz ; 

 neither Lamarck nor Kiener have identified it. M. Des- 

 hayes notices the discrepancy between the figm-es of 

 Kiener and Chemnitz, and it is peculiarly gratifying to 

 me to be enabled to produce the tnie species. The ac- 

 companying figure may appear somewhat dissimilar from 

 the antiquated drawing in the ' Conchylien Cabinet,' at 

 first sight, but a comparison with the original description 

 removes all doubt on the subject :—" testa umbilicata, 

 flavescente, costis mm-ioato-spinosis circumcincta, anfrac- 

 tibus supra late planiusculis et margine acuto, imbricato, 



a parietibus distinctis, spinis costarum ex fusco macu- 

 latis, subulatis, labro crenato, caude recta adscendente ". 

 The shell figured by M. Kiener PL U, Yig. 39 a, as a 

 variety of the P. imperialis, is, I think, a P. sacellum. 



Species 59. (Fig. a and b. Mus. Cuming.) 



Purpura muricina. Purp. testa ovatd vet oblongo-ovatd, 

 aiifractibus superne depressis, longitudinaliter plicato- 

 costatis, costis interdum duplicatis, superfcie told mi- 

 nutissime et creberrime squamatd ; sordide fused vel 

 nigricante, albo articulatd et tessellatd, columella 

 labroque chocolato-fuscis, aperturce faiice carulescente. 



The little mouse Purpura. Shell ovate or oblong- 

 ovate, whorls depressed round the upper part, longi- 

 tudinally plicately ribbed, ribs more or less tubercu- 

 lated, transversely ribbed, ribs sometimes duplicated, 

 entire sm-face of the shell very minutely and closely 

 scaled; dun brown or blackish, articulated and 

 tessellated with white, lip and columella chocolate- 

 brown, interior of the apertm-e blueish. 



De Blainville. Nouv.Ann. duMus.pl. 10. Fig. 3 to 5. 

 Purpura tessellata. Sowerby, Genera of Shells. 



Hab. Philippine Islands, (under stones) ; Cuming. 



This extremely variable, yet well-defined, species, was 

 introduced by M. De Blainville, under three heads, 

 P. muricina, Miiricoides, and Turbinoides ; and in M.Kiener's 

 ' Iconographie ', it will be found that the shells repre- 

 sented in his group of ' Pourpres semi-ricinules ' Fig. 13 

 and 17, are clearly identical \vith that figm-ed among his 

 ' Poiu-pres buccinoides ' at Fig. 82. The species is subject 

 to a remarkable degree of modification, but may be recog- 

 nized in all its phases, amongst other characters, by the 

 sm-face being closely bestudded with minute scales. 



Species 6p(Mus. Cuming). 



Purpura alveolata. Purp. testd subfusiformi-ovatd, 

 transversini obscure coslatd, undique inciso-striatd, 

 costis obsolete luberculafis, tuberculis obtusis, superfi- 

 ciariis, columelld subdepressd, labro intus dentato ; 

 albidd, tuberculis nigris, areis inter strias maculis 

 nigris oblongis interruptis, columelld et apertiirce fauce 

 aurantio-luteis. 



The checkered Purpura. SheU somewhat fusiformly 

 ovate, transversely obscurely ribbed, encii-cl 

 throughout with engraved striae, ribs obsoletely tuber- 

 culated, tubercles black, spaces between the stris 

 interrupted with oblong black spots, columella and 

 interior of the aperture orange yellow. 



Hab. Panama (under stones) ; Cuming. 



Avery characteristic species easUy recognized by its 



style of colom-ing above described. 



