10. 
ll. 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
DEVELOPMENT OF ACANTHODRILUS MULTIPORUS. 537 
List or PrincrpaAL MEMOIRS CONSULTED. 
. Vevpovsky, F.—‘ Entwickelungsgeschichtliche Untersuchungen,’ Hefte 
1 and 2, Prague, 1888, 1890. 
. Vespovsky, F.—‘ System u. Morphologie d. Oligochaeten,’ Prague, 1884. 
. Batrour, F. M.—*‘ A Monograph on the Development of Elasmobranch 
Fishes,’ London, 1878. 
. Bennam, W. B.—*< Note on a New Earthworm,” ‘ Zool. Anz.,’ 1889. 
. Bennam, W. B.—*‘ Studies on Harthworms,” Pt. 1, ‘ Quart. Journ. 
Mier. Sci.,’ vol. xxvi. 
. Perrier, BE.—“ Etude sur un nouveau genre de Vers de Terre,” ‘Arch. 
Zool. Exp.,’ t. ii. 
. Bepparp, F, E.—‘“‘ On the Specific Characters and Structure of certain 
New Zealand EKarthworms,” ‘ Proc. Zool. Soc.,’? 1885. 
. Bepparp, F, E.—‘‘ On the Anatomy and Histology of Pleurocheta 
Moseleyi,” ‘Trans. Roy. Soc. Edin.,’ vol. xxx. 
. Bepparp, F. E.—‘“ On the Structure of a New Genus of Oligocheta 
(Deodrilus), and on the Presence of Anal Nephridia in Acantho- 
drilus,”’ ‘Quart. Journ. Mier. Sci.,’ vol. xxxi. 
Bepparp, F. E.—* On the Structure of an Earthworm allied to Nemer- 
todrilus, Mich., &.,’’ ‘Quart. Journ. Mier. Sci.,’ vol. xxxi. 
Brreu, R. 8.—*“‘ Untersuchungen tiber den Bau und die Entwickelung 
der Geschlechtsorgane der Regenwirmer,”’ ‘ Zeitschr. wiss. Zool.,’ 
Bd. xliv. 
Bereu, R. §8.—“ Zur Bildungsgeschichte der Hxkretionsorgane bei 
Criodrilus,” ‘Arb. Inst. Wiirzburg,’ Bd. viii. 
Brreu, R. $.—“ Neue Beitrage zur Embryologie der Anneliden,” 
‘ Zeitschr. wiss. Zool.,’ Bd. 1. 
Dre Mrvron.—‘ Comptes Rendus,’ t. 102. 
Wutsoy, HE. B.—“ The Embryology of the Earthworm,” ‘ Journ. Morph.,’ 
vol. ill. - 
Mitnes-Marsuatt, A., anD Buzs, EH. J.—The Development of the 
Blood-vessels in the Frog,’”’ ‘Stud. Biol. Labowen’s Coll.,’ vol. ii. 
KixentHat, W.—‘‘ Ueber die Lymphoidzellen d. Anneliden,” ‘Jen. 
Zeitschr.,’ Bd. xviii. 
Kowatevskxy, A.— Embryologische Studien an Wiirmern und Arthropo- 
den,” ‘Mém. Ac. Sci. St. Petersburg,’ t. xvi. 
LanxesterR, EH. R.— Contributions to the Knowledge of the Lower 
Annelids,” ‘Trans. Linn. Soc.,’ vol. xxvi. 
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