HYALOTEUTHIS. 181 



tive lengths 4, 2. 3, 1. nearly equal in length; second and third 

 pairs so compressed that the cups appear in single line ; tenta- 

 cles but little longer than the longest arms, the cnpules largest 

 in the middle of the clubs, and becoming smaller towards each 

 end. Total length to end of tentacles, nearly 11 inches ; length 



of body and head, nearly ('>;") inches. 



Coast of California. 



Very close to the preceding species, from which it may be 

 doubtfully separated by its shorter tentacles. 



O. INSIGNIS. Gould. PI. 81, figs. 369-371. 



Body large, subcylindrical. gradually narrowing to a point 

 behind ; fins transversely rhomboidal, about one-third the length 

 of the body, the angles acute ; arms rather long, ranking 2, 3, 

 4, 1, nearly equal, the lower pair usually deprived of cupules 

 for about one-third their length from the base, but fimbriated 

 with a double range of compressed, adnate lobules ; the cups 

 sometimes compressed into a single series, the lateral pairs have 

 the middle cupules much larger ; tentacles one-third longer than 

 the arms, scarcely clubbed, the cupules largest in the middle ; 

 the rings of the large cupules with fifteen teeth all round, those 

 of the small ones and of the arms have a half circle of eight 

 teeth. Shell slender, dilated towards each ejid. 



Length, including tentacles, 22'5 inches. 



Feejee Isles; Antarctic Seas. 



Subgenus Hyaloteuthis, Gray. 



Body transparent, tubercular beneath ; one or two cups on 

 second pair of sessile arms larger. 



O. PELAGICUS, Bosc. PL 82, fig. 374. 



Body elongate, subcylindrical, smooth above, with scattered 

 opaque tubercles in eight cross lines beneath; fins about a 

 quarter the length of the body, very thin, nicked in front, 

 together transverse, rhomboidal, with rounded angles; arms 

 triangular, cups in two alternate lines, long-peduncled ; tenta- 

 cles very slender, scarcely clubbed, with a series of peduncled 

 cups. Diaphanous white, red spotted. Shell very thin, very 

 slender, without ribs, with a small terminal cone. 



Total length, 4*5 inches. 



Atlantic Ocean ; St. Lucia, W. L 



