ONTCHOTEUTHLD^ I OMMASTREPHES. 6 1 



rhomboldal, acute. Sessile arms, cups oblique, equal-sized ; 

 rings with acute teeth on the higher side, and smooth on the 

 lower one. Tentacular arms naked one third their length ; 

 cups in two series, then in four ; the eighteenth or twentieth 

 central cup of the upper part very large, lateral one very small, 

 longly peduncled and very oblique, the tip compressed, with 

 a narrow triangular patch of a few small cups in three or four 

 series at the base, and two series at the end. 



Pemetti^ Hist. Voy. aux Mahuines, ii. 76. ? 1770. 



Sepia tunicata Molma, Hist. Nat. du Chili, 173. ? 1789 ; Gmelin, 



Syst. Nat. edit. 13. 3151 . sp. 8. ? ; Shaw, Nat. MS. x. iv. t. 546. ? 



from Montfort, Sonnini. 

 Sepia nigra Bosc, Hist. Nat. des Vers., i. 47. ? 1802. 

 Calmar reticule Mordfort., Bvff. de Soniiin. Moll. ii. 96. t. 21. ? 

 Ommastrephes gigas D'Orb. Voy. Am. Merid. Moll. 50. t. 4. 



1835. 

 Ommastrephes giganteus UOrh. Ceph. Acet. t. 1. f. 11 — 13. rings, 



1839, Paleont. univ. t. 23. f. 1 — 4., Paleont. etrang. t. 20. f. 



1—4., Moll. Viv. et Fos i. 425. t. 30. f. 1—4. 



a. Valparaiso. Young ? In spirits. Mr. Bridges's Col- 



lection. 



b. Shell of a. 



5. Ommastrephes Sloanii. 



Body cylindrical, rather tapering behind. Fin rhombic, rather more 

 than one third the length of the body. Sessile arms compressed ; 

 cups equal, oblique, in two rows ; rings black, higher side with 

 regular acute teeth, lower smooth ; third pair acutely finned, 

 with a narrow rayed membrane on the inner edge of the ventral 

 side. Tentacular arms slightly keeled externally, base half- 

 naked ; cups of lower part small, in two rows, of middle four 

 rows ; the seventh pair of the central series largest ; rings 

 with distant teeth all round ; of the lateral series small, lono-ly 

 peduncled, and very oblique; of the apical portion small, in 

 three or four rows, the smallest one nearly sessile. 



Hah. Indian Ocean. 



a. New Zealand, Waitemata. Small. In spirits. Presented 

 by A. Sinclair, M. D. 



6. ? Var. ? In spirits, adult. Mus. Sloane. Fin nearly half 



the length of the body. 

 Cycria Leach, MS. 1817. 

 c. ? Shell of h. broken, dry ; taken out by Dr. Leach. 



