5 2 



however, from the type of that group in being uniformly smaller, in the 

 occasional Cowrey-like extension of the aperture to the summit of the 

 spire, and in the outer surface being of the same highly polished enamel, 

 as the Cf/praa and Oliva. We learn from the last of these characters, 

 that the shell is enveloped by the mantle of its animal inhabitant ; a 

 description of which was published by M. Adanson towards the close of 

 the last century, in his ' Voyage en Sene'gal ', and it has been recently 

 confirmed with greater accuracy by the observations of M. Deshayes on 

 the shores of the Mediterranean ; he describes it as having a thin capa- 

 cious disc reflected over the edge of the shell, with the mantle extended 

 on either side, as in the Cowrey, into a thin lobe, closing together chiefly 

 behind, so as to leave a narrow opening on the back. 



The soft parts of the Marginella, like the Cowries, exhibit a brilliant 

 variety of colouring ; the shells are also similarly characterized ; they are 

 tolerably numerous in species, and are mostly found within the Tropics. 



Species. 



53. liturata, Menke. 



54. longivaricosa, Lam. 



55. maculosa, Kiener. 



56. margarita, Kiener. 



57. marginata, Sow. 



58. miliacea (Volv.), kdan. 



59. monilis, Sow. 



60. muscaria, Lam. 



61. musica, Hinds. 



62. neglecta, Sow. 



63. nodata, Hinds. 



64. nubeculata, Lam. 



65. oblonga, Swainson. 



66. Olivseformis, Kiener. 



67. oryza {Volv.), Lam. 



68. pallida, Sow. 



69. persicula, Lam. 



70. Petitii, Duval. 



71. prunum, Swainson. 



72. pseudo-faba, Sow. 



73. pulchella, Kiener. 



74. pulchra, Gray. 



75. punctulata, Petit. 



76. quinqueplicata, Lam.. 



77. retusa, id. 



78. rosea, id. 



