REFERENCES. 307 



104 ZIEGLER, H. ERNST. Der Ursprung der mesenchymatischen 

 GewebebcidenSelachiern. Archiv f. Mikr. Anat. XXXII. 1888. 

 pp. 378-400. One plate. 



Independent discovery of sclerotome-diverticulum. (See Rabl.) 



IV. 

 ASCIDIANS. 



For bibliography relating to the Ascidians, see Professor W. A. HERD- 

 MAX'S Reports on the Tunicata collected during the " Challenger" 

 expedition Parts I. -III. 1882-88; and also KORSCHELT und 

 HEIDER, " Lerhbuch der vergleichenden Entwicklungsgeschichte 

 der wirbellosen Thiere." Heft III. Jena, 1893. 



V. 

 PROTOCHORDATES, ETC. 



105 AYERS, HOWARD. Concerning Vertebrate Cephalogenesis . 

 Jour. Morph. IV. 1890-91. pp. 221-245. 



1 06 BATESON, WILLIAM. Memoirs on the Development of Balano- 

 glossus. Quarterly Jour. Micro. Sc. Vols. XXIV. -XXVI. 



1884-86. 



107 BROOKS, W. K. The Systematic Affinity of Salpa in its 

 Relation to the Conditions of Primitive Pelagic Life ; the Phylogeny 

 of the Timicata ; and the Ancestry of the Chordata. Part II. of 

 Monograph of the Genus Salpa. Johns Hopkins University. 

 Baltimore, 1893. 



1 08 BURCKHARDT, RUDOLF. Die Homologieen des Zwischenhirn- 

 daches und ihre Bedeutitng fur die Morphologic des Hirns bei 

 niederen Vertebraten. Anat. Anz. IX. 1894. pp. 152-155 and 

 320-324. 



Relates to neuropore of craniate Vertebrates. Author calls the 

 lobus olfactorius impar of Kupffer, the recessus neuroporicus. 



109 CLAPP, CORNELIA M. Some Points in the Development of the 

 Toad-fish {Batr a chus Tait). Jour. Morph. V. 1891. pp. 494- 

 501. 



Observations on the double origin of mouth, made in 1889, n t 

 published in this paper. 



1 10 DAVIDOFF, M. VON. Ueber den " Canalis neurentericus 

 anterior bei den Ascidien.'" Anat. Anz. VIII. 1893. pp. 301-303. 



