PURPURA. 



Platk V. 



Species 20. (Mus. Cuming.) 



PuKPUKA INERJIA. Purp. testdrotundato-ovata,ventricosd, 

 spird acuta, traitsversim creberrime sufitilissime liratd, 

 liris striis longitud'maUhus decussatis, aperturd siib- 

 ampld, lalro tenuictdo, intus i/iciso-sulcato ; cinereo- 

 olivaced, liris mactdis albis hie ilUc sparsim ornatis, 

 columelld et apertiinB fauce rufescente-aurantiis. 



The unaemed Purpura. Shell rotimdately ovate, ven- 

 tricose, spice sharp, transversely verj' closely and 

 finely ridged, ridges decussated -ndth longitudinal 

 strife, apertm-e rather large. Up rather tliin, sharply 

 gi'ooved within; ashy olive, ridges sparingly orna- 

 mented here and there with white spots, columella 

 and interior of the aperture reddish orange. 



Eeeve, Pro. Zool. Soc, 1846. 



Hah. ? 



This is probably one of those species which M. Kiener 

 has confounded together, under the title of Purpura cata- 

 racta, neither of which have the slightest reference to the 

 Buccitmrii cataracfa of Chemnitz. I cannot identify it 

 with any species hitherto recorded, and am luiable to say 

 whether it is ever tuberculated ; there is no indication of 

 tubercles in the specimen before me, and it has a very pe- 

 cidiar style of colouring, the ridges being marked here and 

 there in a very in-egidar manner, with oblong white spots. 



Species 21. (Mus. Cuming.) 



Purpura h^emastoma. Purp. testa ovatd, spird conicd, 

 anfractibus superm concavis, transversim planistriatis 

 et quadriseriatim tiiberculatis, tubercidis rotundatis ob- 

 tusis, basem versus obsoletioribus, columelld leevigatu> 

 aperturd oblongd, superne subconspicue sinuatd, lairo 

 intus inciso-sttlcato ; olivaceo-fused, striis nigrican- 

 tibus, columelld et apertura fauce vivide aurantio-rnjis. 



The red-mouth Purpura. Shell ovate, spu-e conical, 

 whorls concave round the upper part, transversely 

 flatly ridged and encircled with fom' rows of tubercles, 

 which are blunt, rounded, and more obsolete as they 

 approach the base, columella smooth, aperture oblong, 

 rather conspicuously sinuated at the upper part, lip 

 sharply gi-ooved within ; oHve-brown, striae blackish, 

 columella and interior of the apertm-e bright orange- 

 red. 



Buccinum hamastom-a, Liunffius, Syst. Nat. (12th 



edit.) p. 1202. 

 Eadem? Purpura cormda, Menke. 

 Hab. Mediterranean. 



I am inclined to think with M. Deshayes, that this spe- 

 cies is confined to the Mediterranean and Atlantic shores 

 of Europe, concluding that where a more southern locality 

 is quoted, as in the ' Iconogi'aphie des CoquiUes vivantes,' 

 the author has, probaby, had some aUied species before him, 

 (such as the P. ochrostoma, for example) the specific pecu- 

 liarities of which he has failed to discriminate. 



Species 22. (Mus. Cuming.) 



Purpura chocolatum. Purp. testd subalbreviato-ovatd, 

 turgidd, aiifractibus superne concavo-depressis, undi- 

 que creberrhne et suitilissime inciso-striatis, tubercidis 

 grandibus, subdistantibi's, ad unguium armatis, colu- 

 melld concavd, lahro teiiui, iiUus iriciso-suicato ; extus 

 cJwcolato-fuscd, columelld aurantio-rufd, labro intus 

 cliocolato-fusco. 



The chocolate-brown Purpura. Shell somewhat 

 shortly ovate, swollen, whorls concavely depressed at 

 the upper part, verj- closely and finely deeply striated 

 throughout, armed with large rather distant tubercles 

 at the angle, columella concave, Hp thin, sharply 

 gi-ooved mthin ; exterior dark chocolate brown, colu- 

 mella orange-red, hp chocolate brown within. 



DucLOs, Aimales Sci. Nat. vol. xx\d. pi. 2. f. 7. 



Hab. Bay of CaUao, Peru (found in sandy mud at the 

 depth of six fathoms) ; ^Cuming. 



An extremely characteristic species, and so lUstinct from 

 nay other yet described that it is impossible to find any 

 difficulty in recognizing it. 



Species 23. (Mus. Cuming.) 



Purpura succinxta. Purp. testd ovatd, spird plus mi- 

 nusve elevatd, anfractibus sic plm minusve intrusis, 

 transversim nndique costatd, cosfis promineiitibus, ru- 

 gosis, obsolete squamatis, iuterstitiis profundi: excavatis, 

 striatis, costd minore raro interveniente ; sordide lutes- 

 cente-albd. 



The encircled Purpura. Shell ovate, spii'e more or 

 less elevated, whorls accordingly more or less thrust 



August, 1S46. 



