128 teuthid^;. 



Genus I. OMMATO'STREPHES* (Ommastrephes) 

 D'Orbigny. PL V. f. 1. 



Eyes naked, and provided with a deep lachrymal sinus. 



Shell terminating at its lower extremity in a small open 

 pouch. 



The difference between this genus and Loligo is very 

 slight. 



1. Ommatostrephes toda'rust, Delle Chiaje. 



Loligo todarus, D. Ch. Mem. An. s. Vert. Nap. iv. t. Is. Ommastrephes 

 todarus, F. & H. iv. p. 233, pi. RRR. f. 2. 



Body tapering to a blunt point : fins flanking the lower part 

 i\~z) °f the mantle : tentacles almost as long as the body ; 

 their under surfaces are covered with suckers nearly to the 

 base ; at first the suckers are very small, but they become 

 suddenly larger towards the extremities ; small suckers on 

 longer stalks are intermingled with the larger ones ; each 

 sucker is encircled by a horny denticulated ring : mouth having 

 its lip studded with suctorial papillae : arms stout, unequal in 

 size and length, the two lateral pairs being the longest ; every 

 arm has 2 rows of suckers ; the arms are united at their base 

 by a webbed membrane. L. (exc. tent.) 12-15. B. (exc. fins) 

 3-3-5 



Shell straight, ribbed in the middle and at each side, di- 

 lated above, contracted below into an oblong blade, and ter- 

 minating in a small pouch. L. 10-12. B. 0*5. 



Habitat: Berwick Bay (Johnston); Northumberland 

 and Durham (Alder, as Loligo sagittata); Moray Firth 

 (Stables, fide Gordon) ; Scottish seas, common (Fleming, 

 asL. sagittata); Firth of Forth (Forbes); Youghal (Ball); 

 Cork (Allman); Norway (Sars); Boh.-Finm. (Loven); 



* Turning its eyes ; properly Ommatostrojjhus. 

 t Possibly from todi, a kind of small birds. 



