337 



In the Cephalopoda, Peleeypoda, Gastropoda, Braehiopoda, Trilobita, 

 Bryozoa, Graptolites. Echinoderuis aud 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. 

 Paleontological Laboratory, 

 Indiana University, 



Bloomington, Indiana. 



REFERENCES. 



1. Bather, F. A. — The recapitulation theory in Paleontology. Nat. Sci.. 



ii. 1893. 



2. Treatise on Zoology. Echinoderma, 1900. 



3. Barrande. J. — Sao Hirsute, Barrande, ein Bruchstiick aus dein "Sys- 



teme Silurien du centre de la Boheme." Neues Jahrb. f. Min. 

 Geol. u. Pal., 1849. 

 4. System e Silurian du centre de la Boheme," 1-iere partie. 1852. 



5. Beecher, C. E. — Development of a Paleozoic poriferous coral. Trans. 



Conn. Acad. Sci., vol. viii, 1891. 



6. Development of the Braehiopoda. Part I, Introduction. Am. 



Jour. Sci., (3), xli, 1891; Part, II, Classifications of the stages 

 of growth and decline. Am. Jour. Sci., (3), xliv, 1892; Part 

 III, Morphology of the Brachia. Bull. U. S. Geol. Surv.. No. 

 97, ch. iv, 1897. 



7. Some correlations of ontogeny and phylogeny in the Braehiopoda. 



Am. Nat, xxvii. 1893. 



8. Larval stages of Trilobites. Am. Geol.. vol. xvi, 1895. 



9. Outline of a natural classification of the trilobites. Am. Jour. 



Sci., (4), iii. 1897. 



10. 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. 



11. and Clarke. J. M. — The development of some Silurian Braehi- 



opoda. Mem. N. Y. State Mus.. No. i. 1889. 



12. — — and Schuchert, C. — Development of the brachial supports in Die- 



lasma and Zygospira. Proc. Biol. Soe.. Washington, vol.. 

 viii. 1893. 



13. Bernard. H. M. — The prototheka of the Madreporaria. with special 



reference to the genera Colostylis, Linds. and Mosleya, Qneleh. 

 Ann. Mag. Nat. Hist, Ser. 7, vol. xiii, 1904. 



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