CEPHALOPODS OF WESTERN NORTH AMERICA. 



307 



right side consists of about sixteen to twenty very distinct close set organs, while on the left side they 

 are farther from the margin of the lid, much farther from one another, and so greatly reduced that 

 some of them (especially the more dorsal and posterior ones) are with difficulty made out at all (pi. 

 Lii, fig. 6-7). No luminous organs were observed upon the funnel. 



The individual photophores appear as small, slightly elevated, ovoid tubercles of but little over a 

 millimeter in length, and consisting of two fairly distinct divisions — a dense dark, more or less horseshoe- 

 shaped area with a lighter core, and an anterior part of a pale or nearly white color, overlying which are 

 usually two or three correlated chromatophores. The latter, though small, are somewhat more than 

 ordinary in size. (Text fig. 16.) 



Measurements of Meleagroteuthis hoylei. 



Total length, including tentacles 



Excluding tentacles 



Length of mantle (dorsal) 



Width of mantle 



Across fins 



Length of fin 



Width of head 



Longitudinal diameter of right eye opening 

 Loni:itiulin.U diameter of left eye opening. . 

 Leniith of dorsal arm 



Second arm 



Third arm 



Ventral arm 



Tentacle 



Tentacle club 



Type locality, Gulf of Fonscca. west coast of Central America. 



Distribution: Monterey Bay, California; off Santa Barbara Island, California; Gulf of Fonseca, 

 west coast of Central America (Pfeffer); Paternoster Islands, Dutch East Indies (Joubin). 



Specimens of Meleagroteuthis hovlei. 



No 



Locality. 



Depth in 

 fathoms. 



Monterey Bay. Cal 



do 



OfT Santa Barbara Island. Cal 



724-1,000 

 795- 871 



323- 448 



station. 



Albatross station 4544. 

 4S38. 

 44i5. 



Where deposited. 



U.S. Nat. Mus. 



Au- 

 thor's 

 register. 



109 

 no 

 log 



The earliest description of this species is contained in the brief diagnosis of the genus Meleagroteuthis 

 given by Pfeffer in his "Synopsis dcr ocgopsiden Cephalopoden" of 1900 (p. 170): 



" Leuchtflecke sehr dicht stchcnd, auf den dorsalcn und dorsolateralen Armen in drei Reihen, auf 

 den ventrolateralen in vier, und auf den vcntralcn in acht Reihen. Auf dcr Aussenseite der dorsalen 

 •und latcralen Arme und auf der dorsalen Mittcllinic dcs Mantels je eine Reihe knorpeligcr Tuberkel. 

 Segel nur ganz schwach entwickelt. " 



In 1905 Professor Joubin published an account of the structure of the photophores of a supposedly 

 identical form from the other side of the Pacific, but no further information was forthcoming imtil three 

 years later, when Doctor Pfeffer issued his " Tetithologische Bemerkimgen" (igo8, p. 292-294'* in 

 which he gives us a more complete description of his type, but appends no figures. 



