XL Mollusca für 1904. 3 



€aziot, M. (I). Etüde sur les Helix du groupe cespitum. Ann. Soc. 

 Linn. Lyon. Tome 51. 1904. p. -'57—57. 



— (2). Note sur V Helix aperta. Feuille jeunes Natural. Paris 

 (ser. 4) Tome 35. 1904. p. 6—7. 



* — (3). On the dispersal of Mollusca. Proc. Mal. Soc. London. 

 Vol. 6. 1904. p. 3. 



4'liuii, C. Jugendliche Octopoden. Verh. D. Z. Ges. 14. Vers. 

 1904. p. 243—244. 



*Colüer, E. The conchological differences between the genera 

 and sections of the Pupinidae. Journ. Conchol. Leeds. Vol. 11. 1904. 

 p. 110—115. 



*Colliuge, W. E. (1). Notes on slugs and sluglike Molluscs. 5. On a 

 new and interesting genus of slugs. 6. Arion subfuscus from the Orkney- 

 Islands. 7. Abseiice of the male generative organs in Arion hortensis 

 Fer. Journ. Malac. London. Vol. 11. 1904. p. 14—15. 



*— (2). Note on two varieties of Arion subfuscus Drap. Journ. 

 Malac. London. Vol. 11. 1904. p. 98. 



* — (3). Non operculate pulmonata. Fascic. Malay. Zool. London. 

 Vol. 1. 1904. p. 201—202. 



Conklin, E. CJ. (1). Organ-forming germ regions in the eggs of 

 ascidians and snails. Amer. Natural. Vol. 38. 1904. p. 501 — 502. 



— {%). Experiments on the origin of the cleavage centrosoms. 

 Biol. Bull. Woods Holl Vol. 7. 1904. p. 221—226. 12 Figg. 



Coutagne, G. Des caracteres polytaxiques chez les especes ä 

 Fetat sauvage. C. R. Acad. Sc. Paris. Tome 138. 1904. p. 1521—1523. 



*Dautzeubergcr, Ph. Variations et cas teratologiques chez Murex 

 brandaris Linne. Journ. Conchvliologie. Paris. Tome 52. 1904. p. 285 

 —287. Taf. 



*Davenport, €. B. (1). A comparison of some Pectens from the 

 East and the West coasts of the United »States. Mark Annivers. Vol. 

 New York. 1904. p. 121—136. Taf. 9. 



— (2). Evolution without mutation. Science (2) Vol. 19. 1904. 

 p. 215. 



*Deau, B. Japanese oyster-culture. Bull. U. S. Fish Comm. 

 Vol. 22. 1904. p. 17—38. 28 Figg. Taf. 3—6. 



Dhere, Cli. Presence de cuivre et de fer dans l'oeuf de la Seche. 

 C. R. Soc. Biol. Paris Tome 57. 1904. p. 209—210. 



JMstaso, A. Sul sistema nervoso di Oscanius membranaceus e Pleuro- 

 branchea nieckeli. Anat. Anz. 25. Bd. 1904. p. 535 — 541. 



Drew, G. A. (I). The Lamellibranch nervous System. Amer. 

 Natural. Vol. 38. 1904. p. 508. 



[Auszug.] 



* — (2). The anatomy and embryologie of Pecten tenuicostata. 

 Biol. Bull. Woods Holl. Vol. 6. 1904. pag. 307. 



[Vorläufige Mitteilung.] 



Dubois, R. (1). Application des rayons X ä la recherche des perles 

 fines. C. R. Acad. Sc. Paris. Tome 138. 1904. p. 301—302. 



1* 



