128 TEUTHID^. 



Genus I. OMMATO'STKEPHES* (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 \ery 

 slight. 



1. OMMATOSTREPHES TODA ; EUsf_, Delle Chiaje. 



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

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



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

 (i-|) of 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. O5. 



HABITAT : Berwick Bay (Johnston) ; Northumberland 

 and Durham (Alder, as Loligo sagittatd}; Moray Firth 

 (Stables,,/zcfe Gordon) ; Scottish seas, common (Fleming, 

 ^L.sagittata)', Firth of Forth (Forbes); Youghal (Ball); 

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



* Turning its eyes ; properly Ommatostrophus. 

 t Possibly from todi, a kind of small birds. 



