337 
In the Cephalopoda, Pelecypoda, Gastropoda, Brachiopoda, Trilobita, 
Bryozoa, Graptolites, Echinoderms and Corals, examples are pointed out 
in which there is clear and unmistakable evidence of recapitulation. In 
most of these cases it is the epembryonic and not the embryonic stages 
that are the basis of comparison. 
13. 
Paleontological Laboratory, 
Indiana University, 
Bloomington, Indiana. 
REFERENCHS. 
Bather, F. A.—The recapitulation theory in Paleontology. Nat. Sci.. 
ii, 1893. 
—— Treatise on Zoology. Echinoderma, 1900. 
Barrande, J.—Sao Hirsuta, Barrande, ein Bruchstiick aus dem “Sys- 
téme Silurien du centre de la Bohéme.” Neues Jahrb. f. Min. 
Geol. u. Pal., 1849. 
—— Systeme Silurian du centre de la Bohéme,” 1-iere partie. 1852. 
Beecher, C. E.—Development of a Paleozoic poriferous coral. Trans. 
Conn. Acad. Sci., vol. viii, 1891. 
—— Development of the Brachiopoda. Part I, Introduction. Am. 
Jour. Sci., (3), xli, 1891; Part, II, Classifications of the stages 
of growth and decline. Am. Jour. Sci., (8), xliv, 1892; Part 
III, Morphology of the Brachia. Bull. U. S. Geol. Sury., No. 
97, ch. iv, 1897. 
— Some correlations of ontogeny and phylogeny in the Brachiopoda. 
Am. Nat., xxvii. 1893. 
—— [Larval stages of Trilobites. Am. Geol., vol. xvi, 1895. 
—— Outline of a natural classification of the trilobites. Am. Jour. 
Sci., (4), iii, 1897. 
—— Studies in Evolution. (Mainly reprints of occasional papers. 
The papers listed above are also contained in this collection. ) 
New York, Charles Scribner’s Sons, 1901. 
—— and Clarke, J. M.—The development of some Silurian Brachi- 
opoda. Mem. N. Y. State Mus., No. i. 1889. 
—— and Schuchert, C.—Development of the brachial supports in Die- 
lasma and Zygospira. Proc. Biol. Soc., Washington, vol. 
viii, 1893. 
Bernard. H. M.—The prototheka of the Madreporaria, with special 
reference to the genera Calostylis, Linds. and Mosleya, Quelch. 
Ann. Mag. Nat. Hist., Ser. 7, vol. xiii, 1904. 
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