ZOOLOGY. 591 



M6moires concemaut I'Histoire naturelle do I'enipire claiuois par des Piires de 1,1 Com- 

 pagnie de J^sus. 2 cahier. Notes siir les mollusqiies terrestres de la valine du 

 Fleuve Bleu. Chaiig-Hai, 1882. (4to, 90 pp., 10 pi.) 



MoUendorff (O. von). Materialien zur Fauna von China. I. Die Declielsclmecken. 

 Mit 2 Taf. Jalirb. deutscli. malak. Ges., 9. Jalirg., 1882, pp. 251-278. 



(Africa.) 



Crosse (Henri). Faune malacologique dulac Tanganyika. Avecl pi. Journ. de Con- 

 chyliol., t. 30. 



(Australia.) 



Smith (Edgar A.). On the fresh-water shells of Australia, with 3 pi. Journ. Linn. Soc. 

 London, Zool., v. 16, p. 255-317. (1,55 sp., of which 27 are new ; 14 pseudo-Aus- 

 tralian sp.) 



CONCniFERS. 



Morphology. 



Mitsukuri (K.). On the structure and signiiicance of some aberrant forms of Lamel- 

 libranchiate gills. With 1 pi. Stud. Biolog. Laborat, Johns Hopkins University, 

 V. 2, p. 257-270. (Reprinted from Quart. Journ. Micr. Sc.) 



The Oysters. 



Bouchon-Brandely. De la sexualit6 chez I'hultre ordinaire (0. edulis) et chez I'hultre 

 ■poTtngaiee (0. ang2ilata). F€condatiou« artificielle de I'hultre portugaisc. Not« 

 de M. Bouchon-Brandely, presentee par M. Berthelot. Comptes rendus, Acad. Sci. 

 Pans, t. 95, pp. 256-259, July 31, 1882. 



. On the sexuality of the common and that of the Portuguese oyster (0. angu- 



lata). Artificial fecundation of the Portuguese oyster. Translatedby J. A. Ryder. 

 Bull. U. S. Fish Commission, v. 2, pp. 339-341. 



Rapport rolatif h la g^n^ration et h la f6condation artificielle des huitres, 



adress6 an ministre de la marine et des colonies, par M. Bouchon-Brandely, se- 

 cr6taire du Coll6ge de France. Journal officiel de la E^publique Frau^aise. Dec. 

 16 and 17, 1882 ; pp. 6762-6764 and 6778-6782. 



. Report relative to the generation and artificial fecundation of oysters, ad- 

 dressed to the minister of the marine and colonies. (With notes by J. A. Ryder.) 

 Bull. U. S. Fish Commission, v. 2, pp. 319-338. 



Hoek (P. P. C.) Recherches sur les organes g^nitaux des huiltres. Comptes rendus, 

 t. 95, Nov. 6, 1882. 



. Researches on the generative organs of the oyster (O. ef7«?ts). (A translation 



of the foregoing by J. A. Ryder.) Bull. U. S. Fish Commission, v. 2, pp. 343-347. 



Horst (R. ) Bijdrage tot de Kennis van de Ontwikkelingsgeschiedenis van de Oester 

 (Ostrea edulis L.). Tijdschr. d. Ned. Dierk. Vereen., dl. 6, 1882. 



. On the development of the European oyster (Ostrea edulis L.). Quar. Journ. 



Mic. Sci., n. s. v. xxii, pp. 341-346, pi. 27. 



. A contribution to our knowledge of the development of the oyster (Ostrea 



edulis L.). (Translated from the original Dutch by J. A. Ryder.) Bull. U. S. 

 Fish Commission, v. ii., pp. 159-107. 



Oysters and their propagation. 

 Much alarm has been felt in some quarters lest nature unaided should 

 be unable to answer the demands of an oyster-loving population, in- 

 creasing in an extraordinary ratio, and covering a continent. The U. 

 S. Commissioner of Fisheries therefore delegated Mr, John A. Eyder, an 

 accomplished embryologist,to investigate the feasibility of the artificial 

 propagation of the esteemed niollusk. Meanwhile European govern- 



