PURPURA.— Plate XIII. 



Species 76. (Mas. Cuming.) 



Pdrpuka cingulata. Furp. testa oblongo-ovatd, costis 

 tribtis out minorihus spiraliter cingulata, costis valde 

 prominentibm, planads, Icevibus, ntririqite excavatis, cos- 

 taruiyi inferstiliis subtiUssime striatis; cinereo-aWicante, 

 aperturce fauce fusco tinctd. 



The belted Purpura. Shell oblong-ovate, spiraUy en- 

 circled with three, or fewer, ribs, which are peculiarly 

 prominent, smooth and flattened at the summit, and 

 excavated at the sides, interstices between the ribs 

 very finely striated; ashy-white, interior of the 

 aperture stained with brown. 



Deshayes, Anim. sans vert. vol. x. p. 86. note. 

 Bueeinum cingulatum, Linnaeus. 

 Furpnra trochlea, Lamarck. 



Hah. Cape of Good Hope. 



The prominence and regularity of the ribs impart a 



pecidiar screw-like appearance to the shell, the effect of 



which is increased by the depression of the sutural portion 



of the spire. 



Species 77. (Mus. Cuming.) 



Purpura affinis. Purp. testa recto-fmiformi, crassd, 

 solidd, spird acute acuminata, anfractibus tubercitUs 

 solidis proriiinentibus biseriatim cinctis, interstitii^ 

 striatis ; columella obsolete plicatd ; aperfurd pared, 

 labro intus dentato ; alhd, aperturce fauce crocato-fua- 

 cescente. 



The allied Purpura. Shell straightly fusiform, thick, 

 soUd, spire sharply acuminated, whorls encircled 

 with two rows of prominent solid tubercles, interstices 

 striated ; colimiella obsoletely plaited, aperture small, 

 lip toothed within ; white, interior of the apertiu-e 

 saftVon-brown. 



Hab. Elizabeth Island, South Seas, (on exposed rocks at 

 half-tide) ; Cuming. 



I have examined several examples of this species, and 

 find it uniformly distinct from the P. armigera to wliich 

 it is so closely allied. 



Species 78. (Mus. Cuming.) 



Purpura gibbosa. Purp. testa, subventricosd, spird brevi, 

 anfractibus concentrice pli^ato-costatis, costis tumidis. 

 Si bnodosis, tramversim subtiUssime et creberrime cari- 

 natis, carirm acutis, irregwlaribus, minute sqwamatis ; 

 albd, violaceo tinctd, apertura fauce vivide violaced. 



T"he gibbous Purpura. Shell ovate, somewhat ventri- 

 cose, spii'e rather short, whorls concentrically pbcately 



ribbed, ribs swollen, somewhat nodose, transversely 

 very finely and closely keeled, keels sharp, irregulai-, 

 minutely scaled ; white, tinged, with violet, interior 

 of the aperture deep violet. 



A small gibbous species approximating in general 

 character to some of the Murices. 



Species 79. (Mus. Cuming.) 



Purpura Callaoensis. Purp. testd ovatd, subdepressd, 

 spird brevissimd ; anfractibus lavibus aut obsolete 

 uodusis, transversim tenuissinw sulcatis, areis inter 

 sulcos 7ninuiissime regulariter striatis ; columella exca- 

 vatd, aperturd ampld, labro crenulato ; sordide albd, 

 fuscescente sxihhidistincte longitudinaliter undulatd, co- 

 Inmelld et aperturce fauce albis. 



The Callao Purpura. Shell ovate, a little depressed, 

 spire very short ; whorls smooth or obsoletely nodose, 

 transversely very finely grooved, areas between the 

 grooves very minutely regularly striated ; columella 

 excavated, aperture large, lip crenulated ; dull white, 

 rather indistinctly longitudinally festooned with light 

 brown, columella and interior of the aperture white. 



Gray, SpicUegia Zoologica p. 4. pi. 6. f. 11. 



Ifab. Callao Bay ; Hennah, Cuming. 



An interesting little species, described some years since 

 by Mr. Gray, of which there are several examples in the 

 British Museum. 



Species 80. (Mus. Brit.) 



Purpura Janellii. Purp. testd ovatd, medio obesd, basi 

 coiitractd, spird brevi ; anfractibus transversim striatis, 

 supertte declivibus, infra tuberculin rotimdatis obtttsis 

 seriatim armatis ; columelld arcuatd, labro intus denti- 

 culato et lirato ; albidd, epidermide olivaceo-fuscd 

 indutd, columelld rubro-nigricante, aperturce fauce 

 ccerulescente. 



Janelle's Purpura. Shell ovate, stout in the middle, 

 contracted at the base, spire short ; whorls trans- 

 versely striated, sloping round the top, armed beneath 

 with rows of blunt rounded tubercles ; columella 

 arched, lip denticidated and ridged within ; whitish, 

 covered by an oUve-brown epidermis : columella 

 reddish black, interior of the aperture blueish. 



Kiener, Icon. Coq. viv. p. 122. pi. 31. f. 89. 



Hab. Payta; Kiener. 



A very rare and characteristic species of which there are 

 two specimens in the British Museum. 



