. Journal of the Bombay Natural History Society . Fig. 13. The .formula for JSerita may be stated as oo • 3 • 1 • 3 • oo if thelarge capitmliform tooth next the marginals be regarded as a lateral,That for Astralium and Polydonta is in each case oo • 5 • 1 • 5 • oo Allthese Iadnlae consist of a large number of rows, only a couple ofrows are illustrated in the figures. Other species in the collection are Turbo elegans, Phil., Clanculusscahrosiis, Phil., and Euchelus indicas, A. Adams. The two latterbelong to the Trochidce. THE TEETH OF SNAILS. 277. All our species are vegetable feeders and areco
. Journal of the Bombay Natural History Society . Fig. 13. The .formula for JSerita may be stated as oo • 3 • 1 • 3 • oo if thelarge capitmliform tooth next the marginals be regarded as a lateral,That for Astralium and Polydonta is in each case oo • 5 • 1 • 5 • oo Allthese Iadnlae consist of a large number of rows, only a couple ofrows are illustrated in the figures. Other species in the collection are Turbo elegans, Phil., Clanculusscahrosiis, Phil., and Euchelus indicas, A. Adams. The two latterbelong to the Trochidce. THE TEETH OF SNAILS. 277. All our species are vegetable feeders and arecommon on rocks, between tide marks, on theBombay beaches. Some of the Ehiji>ido(/loi;sa possess jaws. (<j) Docoglossa (Jo/co9=beam). Example: Melcioniscns aster, Reeve, familvPateUida (the limpets). The radute of thelimpets are of great lengih, that of Melcioniscns,when stretched out straight, is mnch longer thanthe body of the animal. A few rows are shownin fig. 14. The formula may perhaps be writtenas3. 1.( 1.) 1. 3. where the outer figuresdenote some obscure plates not shown in thedrawing and the inner figures denote a pair of identical centrals. I^g. 14. 4. Order Amphineura. Example: Chiton lurmanus, Carpenter (fig. 15). llie Chitonidctare creatures, with the habits of limpets, protected by a compoundshell of eight overlapping plates connected by a leatiiery det-ached from the rock they have the power of foiling up like a woodlouse. The ittdula is very large and massiv^compared with the size of the an
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