List of the principal Literature 
having reference to the subjects treated of in this memoir. 
(There is also referred to a few papers to which I have had no access as we 
have not got them in the library of Bergen's Museum, and which I only know 
from the rep orts by other authors.) 
1804. Mang i li. Nuove richerche zootomiche sopra alcune specie di Conchiglie 
bivalvi. Milano, 
1807. A. Barba. Osservazioni microscopiche sul cervello e sue adjacenti. Napoli. 
An abstract in ReiVs Archiv. Bd. X. 181 1 p. 467. 
1819. — Osservazioni microscopiche etc. . . Seconda edizione aggiunte. Napoli 
— Translated in German: (Beobachtungen iiber das Gehirn etc.) by 
Dr. J. J. Albrecht v. Schonberg. Wiirzburg 1829. 
1820. Tre vir an us. Vermischte Schriften anat. und phys. Inhalts. Bd. III 
Untersuchungen iiber den Bau und die Funktionen des Gehirns der 
Nerven und der Sinneswerkzeuge in den verschiedenen Klassen und 
Familien des Thierreiches. Gottingen. 
1824. Serres. Anatomie comparée du cerveau. 
1825. Roth. De animalium invertebratorum systemate nervoso. Disertatio inau 
gural Wiceburgi. 
de Blainville. Manuel de Malacologie. 
1828. Milne Edwards. Recherches anatomiques sur le syst^me nerveux des 
Crustacés. Ann. d. sei. nat. T. XIII p. 113 — 123. 
Johannes Muller. Ueber ein eigenthiimliches, dem Nervus sympathicus 
analoges Nervensystem der Eingeweide bei dem Insekten. Nova acta 
Leop, Carol. nat. cur. T. 14. Pars I. Bonn p. 71 — 108. 
1829. Morren. Histoire du Lombric terrestre. Bruxelles. 
Lyonet. Anatomie de differentes esp^ces d'Insectes. Mem. du museum 
Paris Tom. 18. 
1832. George Newport. On the nervous system of the Sphinx ligustri, Lin 
and on the changes which it undergoes during a part of the meta- 
morphoses of the insect. Phil. trans, of the Royal Soc. London 
1832 p. 383. 
