1893. PARASITES ONVALG AE. 123 
but with rich promise of reward, I have appended a list of papers 
which, while it does not claim to exhaust the literature by itself, will 
yet, with the books referred to in the text, guide the student to all 
that is known of the subject, and to collateral matters of interest. 
REFERENCES. 
1. Waucher.—-Conferves d’eau douce, pl. iii., f. 8, 1803. 
2. Balbiani.—Ann. Sci. Nat, (Zoologie), vol. vii., pl. iv., 1878. 
3. Oliver, D.—Trans. Tyneside Nat. Field Club, vol. iv., p. 263, 1860. 
4. Bennett, A. W.—Anmnals of Botany, vol. iv., p. 172 and p. 300 (for literature of 
Vaucheria galls), 1892. 
5. Barton, E. S.—Fourn. Botany, March, 1891, p. 303. 
6. ———— Phycological Memoirs, part i., pl. 7, 1892. 
7. De Man.—Festschrift zum siebenzigsten Geburtstag Rud. Leuckarts. (Engel- 
mann, Leipzig, 1892). 
8. Braun, A.—Monatsber. and Abhandl. Konigl. Akad. Wissensch. Berlin, 1855. 
9g. Bail.—Botan. Zeit., 1855, p. 678. 
1o. Cienkowski.—/bid., 1857, p. 233. 
11. Cohn, in Max Schultze’s Archiv. fiiy mikvoscopische Anatomie, vol. iii., p. 41, 
1867. 
12. Magnus.—Commission zur wissensch. Unters. des deutschen Meeres, vol. ii., 
p. 76, 1872. 
13. Kny.—Botan. Zeit., 1871; p. 870. 
14. Nowakowski.—Cohn’s Beitr. zur Biologie d. Pflanzen, vol. ii., p. 73. 
15. Wright, E. P.—Tvans. Roy. Ivish Acad., vol. xxvi. p. 369, 1879. 
16. Pfitzer.—Monatsber. Konigl. Akad. Wiss. Berlin, 1872, Pp. 379. 
17. Zopf.—Botan. Zeit., 1879, p. 351. 
18. Wright, E. P.—Trans. Roy. Ivish Acad., vol. xxvi., p. 355, 1879. 
19. Cohn.—Beitr. zur Biol. d. Pflanzen, vol. i., p. 87. 
20. Schmitz.— Botan. Zeit., 1892, p. 624. 
GEORGE MuRRAY. 
