PURPURA. 



Plate VI. 



Species 25. (Mus. Cuming.) 



Purpura coeonata. Purp. testa subglobosd, ventricosu, 

 hasi nniMUcatd, anfractibm trkeriatim nodosis, mperne 

 sqnainis callosis gihbosis asctndentibus coronatis; albi- 

 catiie, linei-s tra)i»cersis fusds compicm pictd, columella, 

 et apertura fauce rufo-aurantik. 



The coronated Purpura. Shell somewhat globose, 

 veutricose, umbilicated at the base, whorls encircled 

 with thiee rows of nodules, coronated round the upper 

 part with callous swollen ascending scales ; whitish, 

 conspicuously painted with transverse brown lines, 

 columella and interior of the aperture reddish orange. 



Lamarck, Anim. sans vert. (Deshayes' edit.) vol. x. p. 72. 

 Eadem. Purpura callifera, Lamarck. 

 Purpura Cruinemis, Schubert and Wagner. 



Hab. ? 



The main feature of distinction in this species, consists 

 in the curious vaulted scales which ai'e formed over the 

 sutm'c. Prequently they ai'e increased by a callous deposit 

 of semitransparent matter, having almost the appearance 

 of wax ; which state is the Purpura callifera of Lamarck. 



Species 26. (Mus. Cuming.) 



Purpura carixifera. Purp. ovatd, spird acuminato- 

 turritd, aii/ractibus transversim carinatis et striatis, 

 medio angulato-tumidk et tuberculatis, aperturd supenie 

 sinuatd; ciuereo-fic-scescente, carinis striisgue, columella 

 et aperturiB fauce rufo-aurantiis. 



The keeled Purpura. Shell ovate, spii-e acuminately 

 turreted, whorls transversely keeled and striated, an- 

 gidarly swollen and tuberculated in the middle, aper- 

 tm-e sinuated at the upper part ; ashy brown, keels, 

 striai, columella and interior of the aperture reddish 

 orange. 



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



Eab. ? 



It is the distmguishing featm-e ot this species to have 

 two keels of a more prominent character than the rest, on 

 the middle and upj)er half of the whorls, each of which, 

 particularly the lower, is more or less tuberculated. 



Species 27. (Mus. Cuming.) 

 Purpura armigera. Purp. testa ovatd, spird conico- 



acumiiiatd, aiifractibus superne depressiuscnlis, tuber- 

 culoruni seriebus tribus aut pluribus cingulati^s, tuber- 

 culis grandibus, crassis, obtusis, valde prominentibns, 

 colmiielld et apertures fauce rosaceo-luteis. 



The armed Purpura. Shell ovate, spii-e conically acu- 

 minated, whorls rather depressed round the upper 

 part, encircled with thi-ee or more rows of tubercles, 

 tubercles large, tliick, obtuse, very prominent, colu- 

 mella slightly WTiukled; white, encircled with yel- 

 lowish-brown bands between the rows of tubercles, 

 colimiella and interior of the apertm-e pinkish-yellow. 



Lamarck, Anim. sans vert. (Deshayes' edit.) vol. x. p. 64. 

 Buccinurii armigerum, Chemnitz. 



Hah. ? 



A well-known species, distinguished by its stout promi- 

 nent tubercles and elevated conical spu-e; the banded 

 painting is also pecidiar. 



Species 38. (Mus. Cuming.) 



Purpura bicostalis. Purp. testa ovatd, spird subacu- 

 mitiatd, aiifractibus transversim undique imjiresso-stria- 

 tis, superne depressiuscuUs, costis duabus subobsotetis, 

 plus miiiusve tuberculiferis, cingulatis, columelld oblique 

 plicato-rugosd, labro intus fortiter inciso-sulcato ; fus- 

 cescente, strigis flexuosis cinereo-olivaceis longitudina- 

 liter nebulatd, areis inter strias conciime fusco articu- 

 latis, columelld et apertura fauce aurantio-rujis. 



The two-ribbed Purpura. Shell ovate, spire a little 

 acuminated, whorls transversely impressly striated 

 throughout, rather depressed at the upper part, en- 

 circled with two obsolete ribs, which are more or less 

 tuberculiferous, columella obliquely plicately wiinkled, 

 Hp strongly sharply grooved within ; light brown, 

 clouded longitudinally wth ashy oKve streaks, spaces 

 between the striaa prettily articulated with brown, 

 columella and interior of the aperture orange-red. 



Lasi.vrck, Anim. sans vert. (Deshayes' edit.) vol. x. p. 82. 



Hab. St. Elena, West Columbia (found on the rocks at 

 low water) ; Cuming. 



This species, which is probably often confounded with 

 the P. licemastoma, may be distinguished in gi-eat measure 

 by its neat articidated painting. 



August, 1846. 



