MUSEUM OF COMPARATIVE ZOOLOGY. 113 



Balfour, Francis M. (continued). 



Also German trausl. by Dr. B. Vetter : Haudbuch der vcrgleicliendeu 

 Embryologie. I. Jeiia, 1880. 



Essays on Embryology. 



I. On the Structure and Homologies of tlie Germinal Layers of the Embryo. 



QuarL Jouni. Micr. Set., XX. pp. 247-273, 17 cuts. 1S80. 



II. Larval Forms : their Nature, Origin, and Affinities. QuarL Journ. Micr. 

 Sci., XX. pp. 3S1-407. 21 cuts. ISSO. 



Bastian, H. Charlton. 



On the Anatomy and Physiology of the Nematoids, Parasitic and Free ; with 

 Observations on their Zoological Position and Affinities to the Echiuoderms. 

 Phil. Traits. Roy. Soc. London, CLVI. pp. 545-638, PI. XXII.-XXVIII. 

 1866. 



Barrels, J. 



Embryogenie de VAsteriscus verrticulatus. Journ. de VAnat. et de la Thi/siol., 

 XV. pp. 1-S, PL I., II. 1879. 



Baur, Albert. 



Beitrage zur Naturgeschichte d. St/mpta digitata. Drci Abhandlungen. Dres- 

 den, 1861^. 51 ; 60 ; 119 pp., 8 pi. 

 (Zweite Abhandlung, Metamorphose und Entwickelung der Synapta digitata.) 



Bell, F. Jeffrey. 



Note on the Number of Anal Plates in Echinocidaris. Proc. Zool. Soc. Lon- 

 don, pp. 436, 437. 1879. 



Exhibition of an Immature Echinoid. Proc. Zool. Soc. London, pp. 356-358. 



1880. 



(Palaeolampas, the immature form of an Echinolampas.) 



Observations on the Characters of the Echinoidea. Part III. On Some Genera 

 and Species of the Temnopleurida;. Proc. Zool. Soc. London, June 1, 1880. 

 pp. 422-440, PI. XLI. 



(Describes the young forms of several species.) 



On the Apparent Retention of a Sur-Anal Plate by a Young Echiuometra. 

 Journ. lAmi. Soc. Jjondon, Zool., XV. pp. 318-320. 1881. 



Abstr. Journ. Roy. Mic. Soc. [2], I. p. 896. 1881. Also Zool. Anzeig., 

 No. 99, p. 89G. 



See also p. 119, Gegenbaur, Carl. 



Beneden, P. J. van. 



Sur deux Larves d'fechinodermes de la Cote d'Ostende. Bull. Acad. Roy. 

 Belgiqiie, XVII. pp. 508-515, 1 pi. 1850. VJnstitut Journ. Gen. Soc. 

 Trav. Sci., XVIII, p. 276. 1850. 



{Bipinnaria and Ophiuraii larvx.) 



