PURPUitA, 



Platk IV. 



Species 16. (Fig. a and h Mus. Cuming.) 



PuRPi'ii.i ni;cciNEA. Purp. tedd Huljobl/myo-fmiformi, 

 longiludinuliter ohmlelc coHtald, cohIu lalin, tranHvwmin 

 undique liratd, lirls atifjunliH, (icuUh, hie iUic, Hutittqui- 

 diitanler, majorihm, colmrudld ohlme uuiplicald, aper- 

 tura-fauce Hublililer rad'mlim liratd ; fuHcd, Urin majo- 

 rilnufuKO saiuraliore aViui/ua niiide arliculalin, aper- 

 tvrdfuscescente-al6idd. 

 Thb buccinoid i'uiu'UKA. Shell somewhat oblong, 

 fusiform, longitudinally obsoletcly ribbed, ribs broad, 

 transversely ridged throughout, ridges narrow, acute, 

 here and there, nearly cquidistantly, larger, columella 

 obtusely one-plaited, interior of the aperture finely 

 radiately ridged ; brown, larger ridges neatly articii- 

 lated with white and darker brown, aperture brownish 

 white. 

 Deshayes, Anim. sans vert. vol. x. p. 92. 

 Purpura striata, Ciuoy and Gaimard. 

 y/«//. New Guinea. 



An aberrant species of the genus, but posses.sing an 

 al)undance of character. The columella has a strong ob- 

 tuse plait upon it, and the shell is encircled round the 

 upper part by three narrow articulated fillets. 



Species 17. (Mus. Cuming.) 



Purpura gigantea. Purp. lestd Huljquadralo-ovatd, apird 

 peculiariler acumiuatd, transveritim irregulariter subti- 

 lisnme sulcata, anfractibus superni uni- vet bi-seriatim 

 tuberculatis, tuberculis peculiariter rotundatis et obtmia, 

 aperturd perampld, mari/ine intus inciso-milcato ; oli- 

 vaceo-fuscescente, sulcis saturatinriAus, columelld et 

 aperturre fauce aurantio-rufis. 

 The gigantic Purpura. Shell somewhat squarely ovate, 

 spire peculiarly acuminated, transversely irregularly 

 very finely grooved, whorls encircled round the upper 

 part with one or two rows of blunt peculiarly rounded 

 tubercles, aperture very large, edge sharply grooved 

 within ; pale olive brown, grooves of a dark tinge, 

 columella and interior of the aperture orange-red. 

 Bttccinum /iaraastoma, Chemnitz (not of Linnaeus), 



vol. xi. pi. 187. f. 1796-7. 

 Purpura cotisul, Kiener (not of Lamarck). 



Hab. ? 



It will be seen by the above arrangement of synonymes, 

 that this magnificent species is neither the Buccinura hm- 

 mastoma of Linnjeus, as supposed by Chemnitz, nor the 

 Purpura coanul of Lamarck, as propounded by Kiener ; ' 



the former (PI. V. Pig. 21.) is an oval shell, encircled 

 throughout with rows of blunt tubercles, and fine dark 

 flattened stria;, the .spire being only moderately elevated; 

 the latter (PI. I. Fig. 4.) is a broad abbreviated shell, 

 with a strong radiating series of prominent tubercles, and 

 a curiously acuminated conical spire. 'J'he shell under con- 

 sideration, differs from both these in being of a more ob- 

 long-square form, with a peculiarly elevated armminated 

 spire, the tubercles though prominent, are of a rounded 

 pimple-like character, and one of the most characteristic 

 features of the species, consists in the surface being en- 

 circled throughout with finely engraved grooves, which are 

 the most prominently developed on the summit of the tu- 

 bercles. 



Species 18. (Mus. Cuming.) 



Purpura deltoidka. Purp. lestd nMreviato-ovuM, crassd, 

 pnmhrosd, trn.mversini impresso-Hlriatd, lubernnliji hoU- 

 dit subdistantibus coronald ; r,astu,neo-niijricante, basi 

 albicante, tuberculin albiionatis, columella palliM pur- 

 pured. 



The deltoid Purpura. Shell shortly ovate, thick, 

 ponderous, transversely impressly striated, coronated 

 with solid, rather distant, tubercles ; dark chesnut 

 black, base whitish, tubercles marked with a white 

 zone, columella faintly stained with purple. 



Lamarck, Anim. sans vert. vol. x. p. 8.5. 



Ilab. Jamaica ; Dr. Adams. 



Distinguished from the following species with which we 

 are more familiar, by its spiral ridge of tubercles. 



Species 19. (Mus. Cuming.) 



Purpura melones. Purp. tesld aMmiato-ovald, craMsd, 

 ponderosd, spird bremjtsirad, transversim imprress'j -striata, 

 muticd; catlaneo-migricante, alMo varid, columelld lules- 

 nente, purpurea linctd, aperturd lutesnente. 



The melon Purpura. Shell shortly ovate, thick, pon- 

 derous, spire very short, transversely impressly 

 striated, smooth ; dark chesnut-black, variegated with 

 white, columella yellowish, stained with purple, aper- 

 ture yellowish. 



DucLos, Annales Sci. Nat. 1832. PI. 1. fig. 2. 

 Purpura crassa, De BUiinville. 



Hah. Monte Christi, West Columbia (under stones at low 

 water); Cuming. 



One of the few species of the genus which are desti- 

 tute of tubercles. 



I 



August, 1846. 



