Common. 



MOLLUSC A. 467 



Family LITTOEINID^ 



57. Littorina malaccana, Phil. 



58. L. intermedia, Phil. 



Family PLAK'AXID^. 



59. Planaxis sulcata, Bom. 



Syn. P. undulata, Lam. 



Family EISSOIDiE. 



60. Eissoina myosorcddes, EecL 



61. R. plicata, A. Ad. 



62. R. media, Schwartz, v. Mohr. 



63. R. d'Orbignyi, A. Ad. var. 



64. R. sp. nov. 



65. Alaha, sp. nov. 



Family NEEITID^. 



66. Nerita polita, L. 



Very common. 



67. N. rudis, Gray. 



Common. 



68. N. alhicella, L. 



Common. 



Family TEOCHID^. 



69. Tectus dentatus, Forsk. 



70. T. noduliferiis. Lam. 



71. EuclieUiis edeniulus, A. Ad. 



72. E. haccaius, Kiister. 



73. Trochus crebriliratus, Jonas. 



74. Monodonta canalifera, Lam. 



75. Gihhula, sp. nov. 



Near G. adriatica, Piiil., but the spire is higher, and 

 the sutures less impressed. It also approaches G. leu- 



H H 2 



