202 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57. 



Genus CRYSTALLOTEUTfflS Chun, emendation. 



61. CRYSTALLOTEUTHIS BERINGIANA, new species. 



Plate 26, fig. 4. 



Station 4765 (Aleutian Islands). One specimen. Cat. No. 

 332920, U.S.N.M. 



Station 4783 (Attn Island, Aleutian Islands). One specimen. 

 Cat. No. 332921, U.S.N.M. 



Station 4793 (Avacha Bay, Kamchatka). Two specimens. Cat. 

 No. 332919, U.S.N.M. 



Station 4806 (east of Erimo-saki, Hokkaido). One specimen. 

 Cat. No. 332922, U.S.N.M. 



Station 5030 (southern part of Okhotsk Sea). One specimen. 

 Cat. No. 332923, U.S.N.M. 



Body subfusiform, about one-third as broad as long, broadest a 

 little before the middle, acuminated posteriorly. A single bifid 

 crystalline tubercle is present on either side of the ventral margin of 

 the mantle but none at its dorsal margin. Fms terminal, small; their 

 combined outline shield-shaped; the total breadth slightly greater 

 than the length which is in turn about one-ninth the length of mantle. 



Head small, prismatic. Eyes nearly mallet-shaped, vath swollen 

 peduncles. Eye-baU of a rounded lozenge shape in contour, the ven- 

 tral extremity somewhat prominent though not rostrated, and covered 

 over by a single large semilunar photophore. Dorsal pad of funnel 

 organ roughly quadrilateral, two-thirds as deep as broad, bearing a 

 long stiff process at the center; ventral pads rounded-quadrangular, 

 about half as broad as the preceding pad. 



^ii'ms nearly conical, without carination; dorsal pair decidedly 

 shorter than the others which are of about equal length and a little 

 shorter than one-third the length of the bod}^, Uinbrella quite rudi- 

 mentary. Suckers closely set in two rows, numbering about ten pairs 

 on the dorsal arm and twelve or thirteen pairs on each of the remain- 

 ing arms; horny ring with 5-7, narrow, blunt teeth along the distal 

 margin. 



Tentacles about twice as thick, and four or five times as long, as 

 the arms. Club obscurely marked off from the stem, only a little ex- 

 panded; aboral sm'face rounded, without dorsal v/eb. Club suckers 

 closely quadriserial, numbering about 45, subequal but the central 

 ten or twelve somewhat larger than the others; horny ring almost 

 as in arm-suckers. Stem suckers minute, sparsely biserial, numbering 

 about 35. 



Gladius extending the whole dorsal length of the mantle, very nar- 

 row, but a little expanded posteriorly into a slender lanceola. 



Stomach mth a single constriction near its caecum which is ovoid al 

 and {-^ as long as the stomach. Pancreas massive, lying on the 

 ventral aspect of liver. Bile-ducts connected with pancreas near their 



