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PROCEEDINGS OF THE ACADEMY OF [July, 



A CATALOGUE OF JAPANESE CEPHALOPODA. 



by s. stillman berry. 

 Introduction. 



While engaged in a somewhat comprehensive study of the Ceph- 

 alopod fauna of the Hawaiian Islands, the writer found himself 

 impelled to consider the possibility of correlation with that of other 

 regions of the Pacific, notably Japan, whence so many bizarre and 

 interesting types have been described. In pursuance of this a 

 simple catalogue was first compiled, then a fairly detailed list of 

 references added, and finally, when the collections of Stanford 

 University proved to be surprisingly rich in material from this 

 region, a mass of other data was accumulated. The greater part of 

 all this is now offered' in the present paper. The aim is merely to 

 present a bibliographic catalogue of all the cephalopod mollusks 

 known to occur within the waters of the Japanese Empire, with the 

 addition of a few more or less pertinent notes regarding such species 

 as have chanced to come under the personal observation of the 

 writer. 



As already indicated, the bulk of this material was furnished by 

 the zoological collections of Stanford University, where it owes its 

 origin chiefly to the Jordan and Snyder Expedition to Japan in 

 1900. As the purpose of this expedition was mainly ichthyological, 

 no special effort was made to secure a large collection of cephalopods, 

 but the species which were incidentally obtained are fairly numerous 

 and frequently of considerable interest. 



In addition to the above, mention should be made of a small 

 series of cephalopods secured by Dr. David Starr Jordan at Fusan, 

 Korea, in 1911, and a few taken at Takao, Formosa, by Mr. Hans 

 Sauter, which are likewise in the Stanford University collections. 



Through the courtesy of Mr. Samuel Henshaw, I have also had 

 the privilege of examining a large series of Euprymna from Hong 

 Kong in the Museum of Comparative Zoology. 



Lastly, but very fortunately, I have been enabled, through the 

 signal kindness of Prof. A. E. Verrill, to secure the loan of an inexten- 

 sive but unusually interesting series of small squids, including 

 cotypes of two important species, taken many years ago by Prof. 



