164 MOLLUSCA 



Specimens of other cephalopods, such as Octopus and 

 Nautilus, should be compared with the squid and the adapta- 

 tions that fit them for their particular lives noted. 



Brooks: The Development of the Squid (Loligo Pealii). Mem. Bost. 

 Soc. Nat. Hist., 1880. 



: Handbook of Invertebrate Zoology. 



Cowdry: Color Changes in Cephalopods. Univ. of Toronto Studies, 10, 



1911. 

 Drew: Sexual Activities of the Squid. I. Copulation, Egg-laying and 



Fertilization. Jour. Morph., 22, 1911. 

 : Sexual Activities of the Squid. II. The Spermatophore ; Its 



Structure, Ejaculation and Formation. Jour. Morph., 32, 1919. 

 Faussek: Untersuchungen iiber die Entwicklung der Cephalopoden. 



Mitt. Zool. Stat. Neapel, 14, 1900. 

 Griffin: The Anatomy of Nautilus pompilius. Mem. Nat. Acad. Sci., 



9, 1900. 



Vialleton: Recherches sur les Premieres Phases Du Developpement de 

 La Seiche (Sepia officinalis). Ann. Sci. Nat. (7) Zool., 6, 1888. 



Willey: Contribution to the Natural History of the Pearly Nautilus. 

 Willey's Zool. Results. 4, Cambridge Univ. Press, 1902. 



Williams: The Anatomy of the Common Squid, Loligo pealii. Amer. 

 Mus. Nat. Hist. 



: The Vascular System of the Common Squid. Am. Nat., 36, 1902. 



