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494 CHAPTER II— LIFE OF THE SNAIL Habits, Life Histories and Ecology A Preliminary Investigation of the Importance of Desiccation, Temperature and Salinity as Factors Controlling the Vertical Distribution of Certain Intertidal Marine Gastropods in False Bay, South Africa. G. J. Broekhuysen. 1940. Trans. Royal Soc. South Africa, vol. 28, pt. 3, pp. 278-292, 2 pis. Notes on the Louisiana Conch, Thais haemastoma in its Relation to the Oyster, Ostrea virginica. M. D. Burkenroad. 193 i. Ecology, vol. 12, no. 4, pp. 656- 664, 2 figs. Observations on the Local Movements of Littorina littorea (L.) and Thais lapil- lus (L.). R. W. Dexter. The Nautilus, vol. 57, pp. 6-8. The Mud Snail: Nassa obsoleta. A. C. Dimon. 1905, Cold Spring Harbor Monogr. j, pp. 1-48, 2 pis. (Habits and anatomy). The Mechanism of Locomotion in Gastropod Molluscs. H. W. Lissmann. 1945. Joimi. Exper. Biol., vol. 21, pp. 58-69. Illus. The Biology of Purpura lapillus. H. B. Moore, 1936-39. Pts. I, II, and III. Joiirn. Marine Biol. Assoc, vol. 21, pp. 61-89; '^ol. 23, pp. 57-74. The Leaping of the Stromb (Strombus gigas Linn.). G. H. Parker. 1922. Joiirn. Exper. XooL, vol. 36, no. 2, pp. 205-209, 2 figs. Biology of Acmaea testudinalis Muller. M. A. Willcox. 1905. Anier. Nat., vol. 39, no. 461, pp. 325-333. Groivth and Feeding Influence of Natural and Experimental Conditions in Determining Shape of Shell and Rate of Growth in Gastropods of the Genus Crepidula. W. R, Coe. 1942. Joiirn. Morph., vol. 71, no. i, pp. 35-47. A Statistical Test of the Species Concept in Littorina. J. Colman. 1932. Biol. Bidl., vol. 62, no. 3, pp. iiyi4f'^, 11 figs., 8 tables. How Fulgar and Sycotypus Eat Oysters, Mussels and Clams (Busycon). H. S. CoLTON. 1908. Froc. Acad. Nat. Sci. Phila., 1908, pp. 3-10, 5 pis. Growth of the Oyster Drill, Urosalpinx cinerea. Feeding on Four Different Food Animals. J. B. Engle. 1942. Anatom. Records, vol. 84, p. 505ff. Observations on Some of the Probable Factors Controllino- the Size of Certain Tide Pool Snails. R. R. Humphrey and R. W. Macey. 1930. Fiibl. Puget Sound Biol. Sta., vol. 7, pp. 205-208. The Mode of Feeding of Crepidula ... J. H. Orton. 191 2. Joiirn. Mar. Biol. Assoc, vol. 9, no. 3, pp. 444-478. Illus. Anatofjiy The Structure and Function of the Alimentary Canal of Some Tectibranch A4olluscs with a Note on Excretion. Vera Fretter. 1939. Tra?is. Roval Soc. Edinburgh, vol. 59, pt. 3, no. 22, pp. 599-646. Excellent figs.; also same subject on Chitons vol. 59, p. ii9ff; on Limpets vol. 57, p. 287fT; on Aeolids vol. 59, p. 267fT.