BIBLIOGRAPHY.--Among the important papers relating to Gregarines are the following: 1. A. Berndt, "Beitrag zur Kenntnis der ... Gregarinen," _Arch. Protistenk._ I, p. 375, 3 pls. (1902); 2. L. Brasil, "Recherches sur la reproduction des Gregarines monocystidees," _Arch. zool. exp._ (4) 3, p. 17, pl. 2 (1905), and _op. cit._ 4, p. 69, 2 pls. (1905); 3. L. Brazil, "_Eleutheroschizon duboscqi_, parasite nouveau, &c.," _op. cit._ (N. et R.) (4), p. xvii., 5 figs. (1906); 4. M. Caullery and F. Mesnil, "Sur une Gregarine ... presentant ... une phase de multiplication asporulee," _C.R. Ac. Sci._ 126, p. 262 (1898); 5. M. Caullery and F. Mesnil, "Le Parasitisme intracellulaire des Gregarines," _op. cit._ 132, p. 220 (1901); 6. M. Caullery and F. Mesnil, "Sur une mode particuliere de division nucleaire chez les Gregarines," _Arch. anat. microsc._ 3, p. 146, 1 pl. (1900); 7. M. Caullery and F. Mesnil, "Sur quelques parasites internes des Annelides," _Misc. biol._ (_Trav. Stat. Wimereux_), 9, p. 80, 1 pl. (1899); 7a. J. Cecconi, "Sur l'_Anchorina sagittata_, &c.," _Arch. Protistenk._ 6, p. 230, 2 pls. (1905); 8. H. Crawley, "Progressive Movement of Gregarines," _P. Ac. Philad._ 54, p. 4, 2 pls. (1902), also _op. cit._ 57, p. 89 (1905); 9. H. Crawley, "List of the Polycystid Gregarines of the U.S.," _op. cit._ 55, pp. 41, 632, 4 pls. (1903); 10. L. Cuenot, "Recherches sur l'evolution et la conjugaison des Gregarines," _Arch. biol._ 17, p. 581, 4 pls. (1901); 11. A. Laveran and F. Mesnil, "Sur quelques particularites de l'evolution d'une Gregarine et la reaction de la cellule-hote," _C.R. Soc. Biol._ 52, p. 554, 9 figs. (1900); 12. L. Leger, "Recherches sur les Gregarines," _Tabl. zool._ 3, p. i., 22 pls. (1892); 13. L. Leger, "Contribution a la connaissance des Sporozoaires, &c.," _Bull. Sci. France_, 30, p. 240, 3 pls. (1897); 14. L. Leger, "Sur un nouveau Sporozoaire (_Schizocystis_), &c.," _C.R. Ac. Sci._ 131, p. 722 (1900); 15. L. Leger, "La Reproduction sexuee chez les Ophryocystis," _t. c._ p. 761 (1900); 16. L. Leger, "Sur une nouvelle Gregarine (_Aggregata coelomica_,), &c." _op. cit._ 132, p. 1343 (1901); 17. L. Leger, "La Reproduction sexuee chez les Stylorhynchus," _Arch. Protistenk._ 3, p. 304, 2 pls. (1904); 18. L. Leger, "Etude sur _Taeniocystis mira_ (Leger), &c.," _op. cit._ 7, p. 307, 2 pls. (1906); 19. L. Leger and O. Duboscq, "La Reproduction sexuee chez _Pterocephalus_," _Arch. zool. exp._ (N. et R.) (4) 1, p. 141, 11 figs. (1903); 20. L. Leger and O. Duboscq, "_Aggregata vagans_, n. sp., &c." _t. c._ p. 147, 6 figs. (1903); 21. L. Leger and O. Duboscq, "Les Gregarines et l'epithelium intestinal, &c.," _Arch. parasitol._ 6, p. 377, 4 pls. (1902); 22. L. Leger and O. Duboscq, "Nouvelles Recherches sur les Gregarines, &c.," _Arch. Protistenk._ 4, p. 335, 2 pls. (1904); 23. M. Luhe, "Bau und Entwickelung der Gregarinen," _t. c._ p. 88, several figs.