WEYSSE. — BLASTODERMIC VESICLE OF SUS SCROFA. 317 



LITERATURE CITED. 



Agassiz, A., and Whitman, C. O. 



'84. On the Development of some Pelagic Fish Eggs. Preliminary 

 Notice. Proc. Amer. Acad. Arts and Sci., Vol. XX. pp. 23-75, 

 IPl. 



'85. The Development of Osseons Fishes. I. The Pelagic Stages of 

 Young Fishes. Mem. Mus. Comp. Zool. Harvard Coll., Vol. XIV. 

 No. 1, Part 1. 56 pp., Pis. I.-XIX. 



'89. The Development of Osseous Fishes. II. The Pre-embryonic 

 Stages of Development. Part First. The History of the Egg from 

 Fertilization to Cleavage. Mem. Mus. Comp. Zool. Harvard Coll., 

 Vol. XIV. No. 1, Part 2. 40 pp.. Pis. XX.-XXXI. 



Balfour, F. M. 



'81. A Treatise on Comparative Embryology. Vol. II. pp. xi + 

 655 + xxii. London. 



Beneden, E. van. 



'80. Recherches sur I'embryologie des mammiferes. La formation 

 des feuillets chez le lapin. Arch, de Biol., Tom. I. pp. 137-224, 

 Pis. IV.-VI. 



Beneden, E. van, et Julin, C. 



'80. Observations sur la maturation, la fecondation et la segmentation 

 de I'oeuf chez les Cheiropteres. Arch, de Biol., Tom. I. pp. 551- 

 571, Pis. XXII. et XXIIL 



Bonnet, R. 



'84. Beitriige zur Embryologie der Wiederkliuer, gewonnen am Schafei. 

 Arch. f. Anat. u. Phys., Anat. Abth., Jahrg. 1884, pp. 170-230, 

 Taf. IX.-XI. 



'91. Grundriss der Entwickelungsgeschichte der Haussaugethiere. 

 282 pp., 201 Abbild. Berlin. 



Christian!, H. 



'92. L'inversion des feuillets blastodermiques chez le rat albinos. 

 Arch, de Phys. norm, et path., ser. 5, Tom. IV. pp. 1-11, Pis. I. 

 etIL 



Clapp, Cornelia M. 



'91. Some Points in the Development of the Toad-Fish (Batrachus 

 tau). Jour, of Morph., Vol. V. pp. 494-501, 3 Figs. 



