REFERENCES '99 



Meisenheimer, J., 1905. Pteropoda. Wiss. Ergebn. Deut.-Tiefsee Exped. 'Valdivia', ix. 



Morton, J. E., 1954a. Studies on the Digestive and Reproductive Systems of the British Ellobiidae (Leucophytia bidentata, 



Ovatella myosotis and Carychium tridentatum). (In the Press.) 

 19546. The Evolution of the Ellobiidae with a discussion on the origin of pulmonates. Proc. Zool. Soc. London (in the 



Press). 



1954c The Biology of Limacina retroversa. J. Mar. biol. Ass. U.K. xxxiii, pp. 297-312. 



Naef, A., 1923. Die Cephalopoden. Teil II. Systematische Morphologie der inneren Organisation. (Vergleichende Anatomie und 



Organogenese.) Fauna e Flora del Golfo di Napoli, Monografia, xxxv, p. 2. 

 National Institute of Oceanography, 1950. Station List R.R.S. 'William Scoresby' 1950. Discovery Repts. xxvi, pp. 



211-58. 

 Oliver, W. R. B., 1915. The Mollusca of the Kermadec Islands. Trans. N.Z. Inst, xlvii, pp. 509-68. 

 Orton, J. H., 1909. On the occurrence of protandric hermaphroditism in the mollusc Crepidula fornicata. Proc. Roy. Soc. London, 



B, lxxxi, p. 468. 

 1926. Observations and Experiments on Sex-change in the European Oyster (O. edulis). J. Mar. biol. Ass. U.K. xiv, 



P- 967- 

 Pelseneer,P.,i887. Report on the Pteropoda collected by H. M.S. 'Challenger'. I. The Gymnosomata. Sci. Repts. 'Challenger', 



Zoology, xix, (iv), pp. 1-69. 

 1888. Report on the Pteropoda. . . 'Challenger'. II. Thecosomata; III. Anatomy. Sci. Repts. 'Challenger', Zoology, 



xxm, pp. 1-132. 



1906. Mollusca, in A Treatise on Zoology (ed. by E. Ray Lankester, London), pp. 355. 



Pruvot-Fol, Alice, 1924. Etude de quelques Gymnosomes mediterr. des peches de VOrvet en 1921-22. Arch. Zool. exp. gen. 



Paris, lxii, pp. 345-400. 

 ■ 1926. Moll, ptirop. gymnos. provenant des campagnes du Prince Albert I de Monaco. Res. Camp. sci. Monaco, LXX, pp. 1-60. 



1942. Les Gymnosomes. I. Dana Rept. XX. 



Redfield, A. C, 1939. The History of a population of Limacina retroversa during its drift across the Gulf of Maine. Biol. Bull. 



Woods Hole, lxxvi, pp. 26-47. 

 Rees, C. B., 1950. The Identification and Classification of Lamellibranch Larvae. Hull. Bull. Mar. Ecol. Ill, (19), pp. 73" io 4- 

 Sherborn, C. D., 1930. Index Animalium, 1801-1850. London, xxm, p. 6093. 

 Stubbings, H. G., 1937. Pteropoda, in Sci. Repts. John Murray Exped. 1933-34. v . PP- x 5-33- 

 Tesch, J. J., 1904. The Thecosomata and Gymnosomata of the Siboga-Expedition. Leyden, 27 (iv), p. 13. 



1946. The Thecosomatous Pteropods. I. The Atlantic. Dana Repts. xxvili. 



1948. The Thecosomatous Pteropods. II. The Indo-Pacific. Dana Repts. xxx. 



1949. Heteropoda. Dana Rept. xxxiv. 



1950. The Gymnosomata. II. Dana Repts. XXXVI. 



Thiele, J., 193 1. Handbuch der systematise/ten Weichtierkunde, (11), Jena. 

 Vayssiere, A., 1915. Moll, eupteropodes. Res. Camp. sci. Monaco, xlvii. 



