THE CEPHALOPODA OF THE HAWAIIAN ISLANDS. 



J- 



By S. STILLMAN BERRY. 



INTRODUCTION. 



The ensuing monograph was originally projected as a report on the collection of 

 cephalopod mollusks taken by the United States Bureau of Fisheries steamer Albatross 

 during her Hawaiian cruise of 1902. It was found, however, that the pages required 

 to be only slightly amplified to become practically a monographic survey of the entire 

 Hawaiian region, and this has accordingly been done. Wherever possible a full descrip- 

 tion is given from Hawaiian material of each species under consideration. This is 

 succeeded by a brief discussion of the further range of the species, tables of dimensions, 

 a short critical comparison with other nearly allied forms, and such other items as 

 seemed relevant. In some cases, especially where a species has been known to the 

 writer only through the descriptions of other authors, it has been thought well to reprint 

 the diagnosis of the original author in full. The work was commenced at Stanford 

 University in the autumn of 1908, and, with the exception of the season of 1909-10, 

 was prosecuted more or less continuously in the zoological laboratories there from that 

 time to November, 191 2. ° 



SOURCES OF MATERIAL. 



The great bulk of the material upon which this report is based is the property of 

 the United States Bureau of Fisheries and was obtained during the explorations of the 

 United States Fisheries steamer Albatross on her extensive investigation in 1902 of 

 the waters adjacent to the Hawaiian Islands, which constitute, zoologically speaking, 

 what is known as the Hawaiian region. .The principal part of the specimens have been 

 turned over to the United States National Museum, but a set of the duplicates is 

 deposited in the Stanford University collections. 



I have further had for study the small series of shore forms already in the collections 

 of Stanford University, most of them obtained by Dr. O. P. Jenkins during his visit to 

 the islands in 1889, or by Dr. D. S. Jordan and Dr. B. W. Evermann in 1901. These 



As on a former occasion. I must express my gratitude to Dr. Walter Kenrick Fisher, of Stanford University, for the kindly 

 interest with which be has constantly followed the progress of this work in his laboratory. It is of interest to note, also, that Dr. 

 Fisher was a member of the Albatross staff during the Hawaiian explorations, and the occasional color and habit notes which 

 appear in his handwriting on the labels of some of the specimens are of more than ordinary interest, especially when we consider 

 how few data of the sort are available for even the commoner species of this group of animals. 



To Dr. Harold Heath I am once more under obligation for the opportunity to work up an important collection originally 

 placed in his own hands for study. It is also due to him that the series of drawings prepared by Mr. R. L. Hudson came into my 

 hands at the same time with the specimens, so that the major portion of them could be utilized in the present report. Other illus- 

 trations in these pages are the work of Miss Lora Woodhead, Mr. Henry Varaum Poor, and Mr. John Howard Paine, all of Stanford 

 University. 



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