-
Four examples of Limmnaea peregra Mull., from salt marshes near the Sea of Aral, showing different effects produced by abnormal conditions of life.
-
Limnaea peregra Mull.; e,e, eyes; t,t, tentacles (A). Helix nemoralis Mull.: e,e, eyes; t,t, tentacles; p.o, pulmonary orifice (B)
-
Margarita undulata.
-
Lepidoteuthis Grimaldi, d'apres Joubin, face ventrale (Princesse-Alice).
-
Littorina litorea.
-
Two rows of the radula of Littorina littorea L..
-
Green Frog or Spring Frog. Rara Clamata
-
Indian Deep-Sea Mollusca. A specimen of Xenophora pallidula, from the Andaman Sea, 185 fathoms.... Among the dead shells used as a fortification are--(a) Pleurotoma congener, (b) Pleurotoma travancorica, (c) Pleurotoma carinata, and (d) Drillia captiva. The dead shells utilised as biulding-material are not stuck on indiscriminately, but are arranged along the edge of each whorl
-
Grandma, Lampsilis ovata (Say), from Cumberland River, upper; Pocketbook, Lampsilis capax (Green), from Mississippi River, lower.
-
Venus mercenaria.
-
-
-
-
-
-
-
-
-
-
-
-
-
-