Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 631
esents numerous phe-nomena of great interest. The eggs (save among the terres-trial species) are usually deposited in aggregate masses, eachenclosed in a common protective envelope. The nature ofthis envelope, however, varies greatly: thus in the commonLymnceus stagnalis, or water-snail, of our… … Palate of Buccinum undatum, asseen under polarized light. DEYELOPMEXT OF GASTEROPODS :—JiUDIBEANCHS. 609 Buccinum umlatum, or common Whelk, it is a membranouscase, connected with a considerable number of similar cases byshort stalks, so as to form large globular masses, which mayoften be picked-np…
Microscopy
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