TABLE OF CONTENTS. 
Page. 
Part I.—The gigantic squids ( ArchiteutMs) and their allies: with observations on similar large 
species from foreign localities.. . [1] 
General description of the several American specimens, and of their occurrence. .. [5] 
Comparative measurements of the specimens . [22] 
Special descriptions of the Atlantic coast species. . [23] 
Observations on the specimens described from foreign localities: 
A. —Atlantic Ocean species . .. [51] 
B. —Examples from the Indian Ocean and New Zealand. [63] 
C. —Examples from the North Pacific. [65] 
D. —Note on large species of Octopus.. . . [71] 
Part IT.—Monographic revision of the Cephalopoda of the Atlantic coast, from Cape Hatteras 
to Newfoundland.:. . [73] 
Dibranchiata.... . . [73] 
Order I.—Decacera. [75] 
Order II.—Octopoda . [177] 
Supplement . [199] 
Conspectus of the families, genera, and species of Cephalopoda included in this paper [221] 
Explanation of plates. [226] 
Index.. [243] 
[241] 
