396 PROCEEDINGS OF THE ACADEMY OF [April, 
Gurart, J. Contribution a l'étude des Gasteropodes Opistobranches et au 
particulier des Cephalaspides. Mem. Soc. Zool. France, 'Tom. XIV, 1901. 
Happon, A.C. Notes on the Development of Mollusca. Quart. Jour. Mic. Sci., 
Vol. XXII, 1882. 
HatscHeK, B. Ueber die Entwicklungsgeschichte von Teredo. Arb. Zool. 
Inst. Wien, Bd. III, 1880. 
Entwicklung der Trochopora von Eupomatus. Jbid., Bd. VI, 1885. 
Heymons, R. Zur Entwicklungsgeschichte von Umbrella mediterranea. Zeit. 
Wiss. Zool., Bd. LVI, 1893. 
Heatu, H. The Development of Ischnochiton. Zool. Jahrb. Abth. Anat. wu. 
Ontog., Bd. XII, 1899. 
Houmes, 8. J. The Cell-Lineage of Planorbis. Zool. Bull., Vol. I, 1897. 
—— Secondary Mesoblast in the Mollusca. Science, Vol. VI, 1897. 
— Reversal of Cleavage in Ancylus. Am. Nat., Vol. XX XIII, 1897. 
The Early Development of Planorbis. Jour. Morph., Vol. XVI, 1900. 
KEFERSTEIN, W. Malacoza Cephalophora. Bronn’s Klass u. Ord., Bd. III, 
1862-66. 
KEFERSTEIN, W., und Exters, E. Beobachtungen tiber die Entwicklung von 
/Holis perigrina. Zool. Beitrige, 1861. 
Kororp, C. A. On the Early Development of Limax. Bull. Mus. Comp. Zool. 
Harv. Coll., Vol. X XVII, 1895. 
KorEN und DANIELSSEN. Bemaerkninger til Molluskernes Udvkling. Nyt. 
Mag. j. Nat. Videnskab., Christiania, 1848. 
Lacaze-Duruiers, H. Mémoire sur l’anatomie et l’embryogénie des Vermets. 
Ann. Sct. Nat. Zool., Tom. XIII. 1860. 
LacazE-DuTuiers et Pruvot. Sur un ceil anale larvaire des Gasteropodes 
Opisthobranches. Comp. rend. Acad. Sci. Paris, Tom. CV, 1887. 
Lane, A. Die Polycladen des Golfes von Neapel. Fauna u. Flora des Goljes 
Neap., Bd. XI, Monographia, 1884. 
LanGerRHANS, P. Zur Entwicklung der Gastropoda Opisthobranchia. Zeit. 
Wiss. Zool., Bd. XXIII, 1873. 
Lanxkester, E. R. Observations on the Development of the Pond Snail 
(Lymnzus stagnalis) and on the Early Stages of Other Mollusca. Quart. 
Journ. Mic. Sci., Vol. XIV, 1874. 
Contributions to the Developmental History of the Mollusca. Phil. Trans. 
Roy. Soc. London, Vol. CLXV, Pt. I, 1875. 
—— On the Coincidence of the Blastopore and Anus in Paludina vivipara. 
Quart. Journ. Mic. Soc., Vol. XVI, 1876. 
—— On the Originally Bilateral Character of the Renal Organs of Prosobranchs, 
etc. Ann. Mag. Nat. Hist., Vol. VII, 1881. 
Lititz, F. R. The Embryology of the Unionide. Journ. Morph., Vol. X, 
1895. 
LovEN, S. Bidrag till Kaennedemen af Molluskernas utwickling. Kongl. 
Vetenskaps Acad. Handl., 1838, Stockholm, 1841. 
MazzarELui, G. Intorno al preteso occhio anale delle larve degli Opistobranchi. 
Rend. R. Accad. Lincei, Vol. I, Fasc. III, 1892. 
ro onerbe delle Aplysiidze del Golfo di Napole. Mem. Soc. Ital., Tom. 
X, 1893. 
—— Bemerkungen iiber die Analniere der freilebenden Larven den Opistho- 
branchies. Biol, Centralbl., Bd. XVIII, 1898. 
McMorricu, J. P. A Contribution to the Embryology of the Prosobranch 
Gasteropods. Stud. Biol. Lab. J. Hop. Univ., Vol. 1886. 
Meap, A. D. The Early Development of Marine Annelids. Journ. Morph., 
Vol. XIII, 1897. 
MEISSENHEIMER, J. Entwicklungsgeschichte von Limax maximus. I. Fur- 
chung und Keimblatterbildung. Zeit. Wiss. Zool., Bd. LXII, 1896. 
—— Entwickslungsgeschichte von Limax maximus. II. Die Larven-periode. 
Ibid., Bd. LXIII, 1898. 
—— Zur Morphologie der Urniere der Pulmonaten. Jbid., Bd. LXV, 1899. 
—— Entwicklungsgeschichte von Dreissensia polymorpha Pall. Jbid., Bd. 
LXIX, 1901, 
Meyer, E. Studien tiber der Korperbau der Anneliden. Mitth. Zool. Stat. z. 
Neapel., Bd. XIV, 1901. 



