MARINE ZOOLOGY 



ANATINID^E 



80. Thrada fragi/is, Pennant. 

 Rare. Rye Harbour. 



Thracia fragilis var. villosiuscula, 

 MacGillivray. 

 Brighton. t 



SEPTIBRANCHIA 



8 1. Cuspidaria cuspidata (Olivi) t 

 Brighton. 



SCAPHOPODA 



DENTALIID.S 



82. Dentalium vulgare, da Costa. 

 Very common. Hastings. 



83. Dentalium entalis, Linnaeus.t 

 Brighton. 



GASTROPODA 

 PROSOBRANCHIA 



AsPIDOBRANCHIA 



PATELLID.S 



84. Patella vulgata, Linnaeus. 



The limpet ; very common. Hastings. 



Patella vu/gata var. depressa. 

 Brighton. t 



85. Helcion pellucidum, Linnaeus. 



A specimen shows alternate rays of blue 

 and brown upon a dull orange ground ; 

 rare. Hastings. 



ACM.teID.ffi 



86. Acmeea mrginea (Mtiller) 



Shell pink, with interrupted lines of 

 colour ; rare. Hastings. 



FlSSURELLIDJE 



87. Emarginula fissura, Linnaeus. 



Shell depressed, with a marginal slit in 

 front ; rare. Hastings. 



88. Emarginula conica, Schumacher. 



Shell more conical than that of the last 

 species ; not uncommon upon trawled 

 rock. Hastings. 



89. Fissurella gr&ca, Linnaeus. 



The ' key-hole ' limpet. Shell cancel- 

 lated with radial and concentric ribs, and 

 having an apical perforation ; somewhat 

 rare. Hastings. 



TROCHID.*: 



90. Gibbula magus, Linnaeus. 



Shell depressed, with large umbilicus ; 

 common. Hastings. 



91. Gibbula tumida, Montague.* 

 Rare. Hastings. 



92. Gibbula cineraria, Linnaeus. 



Shell slightly turreted ; common. Hast- 

 ings. 



93. Gibbula umbilicata, Montague. 



Shell conical, sides slightly convex ; 

 common. Hastings. 



94. Calliostoma montagui, Wood. 



Shell rather high in the spire, with spiral 

 ridges, and fine striae crossing the inter- 

 vening furrows; rare. Hastings. 



95. Calliostoma exasferatum, Pennant.t 

 Brighton. 



96. Calliostoma granulatum (Born) 



Shell acutely conical, granulated ; sides 

 slightly concave ; not uncommon. Hastings. 



Calliostoma granulatum var. lactea, 

 Jeffreys. 



Similar to the type, but white 5 rather 

 rare. Hastings. 



97. Calliostoma zizyphinus, Linnaeus. 

 Shell acutely conical, sides straight, 



whorls spirally lined ; common. Hastings. 



Calliostoma zizyphinus var. lyonsi, Leach. 

 Shell white and nearly smooth; rather 

 uncommon. Hastings. 



TURBINID^: 

 * 98. Phasianella pulla. 



Shell small, conical, and with lines of 



red running diagonally across the whorls ; 



very rare. Hastings. 



PECTINIBRANCHU 



LlTTORINIDJE 



99. Lacuna crassior, Montague. 

 Periostracum horny-looking, wrinkled 



concentrically ; rare. Hastings. 



100. Lacuna divaricata (Fabricius) 

 Brighton. 



1 01. Lacuna parva (da Costa) 

 Brighton. 



102. Lacuna palhdula (da Costa) 

 Brighton. 



103. Littorina obtusata, Linnaeus. 



Shell with low spire. Colour, canary or 

 orange ; common. Hastings. 



104. Littorina littorea, Linnaeus. 



The edible periwinkle ; very common. 

 Hastings. 



99 



