OBSERVATIONS ON THE BRACHIOPODA. 



6ii 



ages of growth, or local variations, resulting from changed environ- 

 ment. But we are not sanguine. 



REFERENCES. 



1. Joubin, li. — Recherches sur I'Anatomie de Waldhcimia venosa, Sol. Mhii. Soc. 



Zool. France, vol. v., p. 554, Paris, 1892. 



2. Dall, W. H. — Notes on some Recent Brachiopods. Proc. Acad. Nat. Set. 



Philadelphia, p. 172, 1891. 



3. Joubin, li. — Recherches sur I'Anatomie des Brachiopodes Inarticules, Paris : 



A. Hennuyer, 1885. Archiv. Zool. Expcyinientales, vol. iv., p. 161, 1886. 



4. Notes sur I'Anatomie des Brachiopodes Articules. Bull. Soc. Zool. France, 



vol. xii., 1887 



5. Crane, Agnes. — The Anatomy of Crania from Dr. L Joubin's " Recherches sur 



I'Anatomie des Brachiopodes Articules (Archives de Zoologie Experimentales, 

 t. iv., p. 161, 1886). Abstract in Trans. Linnean Soc., vol. iv., ser. 2, Zoology. 

 Appendix, part iii., 1888. 



6. On a Brachiopod of the genus Atretia {A. hrazieri, Dav. MS.). Proc. 



Zool. Soc, p. 181, April, 1886. 



7. Beecher, Charles E., and Clarke, John M. — The Development of some 



Silurian Brachiopoda Mem. New York State Museum, vol i., no. i, Octoberi 

 1889. 



8. Beecher, C. E3. — Development of the Brachiopoda. Part I. Introduction. 



Amer. Joitrn. Sci., vol. xli., p. 343, April, 1891. 



9. Ditto. Part II. Classification of the Stages of Growth and Decline. 



Amev. Journ. Sci., vol. xliv., p. 133, August, 1892. 

 10. Development of Bilobites. Amer. Journ. Sci., vol. xlii., p. 51, July, i8gi. 



11. Davidson, Thomas. — General Summary to the "British Fossil Brachio- 



poda," vol. v., part iii. Mon. Pal. Soc, London, 1884. 



12. Monograph of the Recent Brachiopoda. Trans. Linn. Soc, ser. 2, Zool., 



vol. iv., 1886-1888. 



13. On a Living Spinose Rhynchonella from Japan. Ann. Mag. Nat. Hist., 



ser 5, vol. xvii., p. i, January, 1886. 

 14. Davidson, T., and King, William. — On the Trimerellidse, Quart. Journ. 



Geol. Soc, vol. xxx., p. 124, 1874. 



15 Deslongchamps, Eugene E. — Etudes Critiques sur des Brachiopodes 



nouveaux ou peu connus, vol. i., p. 333. Caen, 1886. 



Agnes Crane. 



2R 2 



