OMMASTREPHES. 233 



they are attached, a nearly regular rhomb. The head is 

 broad and thick, not very prominent in the region of the 

 eyes ; the arms are stout and tapering. The superior pair 

 are shortest ; the lateral pairs longest. The suckers on the 

 latter are larger than those on the upper and lower pairs. 

 On all they are arranged in two rows, gradually diminish- 

 ing in size to the tips. The arms are slightly webbed 

 together at their bases, and the inferior lateral ones are 

 crested on their outsides. The tentacles are stoutly pedun- 

 culated, terete, and terminate in narrow lanceolate clubs. 

 There are no suckers on their peduncular portions. On the 

 uppermost portion of the clubs the suckers are small, and 

 two-ranked on the central portions ; besides two outer 

 rows of small suckers, there are two inner or middle rows 

 of very large ones ; these suddenly cease at some distance 

 from their tapering tips, which are covered with very 

 minute closely-ranked suckers, as many as eight in a row 

 at their commencement. The funnel is broad-based and 

 bilobed below, with auriculated lobes. The pen is long, 

 narrow, and three-sided. 



Mr. D'Orbigny regards the Loligo piscatoram, haiyago, 

 illeceirosa, and Coindetii, as all founded on this species. 



O. todarus, Delle Chiaje. 



Body elongated ; peduncles of tentacula provided with suckers 

 throughout their length. 



Plate RRR, fig. 2. 



Loliijo sagitfata, var. A. Lamarck, Mem. Soc. d'Hist. Nat. de Paris, p. 13. — 

 An. sans Vert. t. vii. p. 663. — Carus. Mem. Acad. 

 Nat. Cur. t. vii. p. 318, pi. 30. — Ferussac and 

 D'Orbigny, Ceph. Acet. plates, Calmars, pi. 1 — 

 Fleming, Brit. Anim. p. 253?— Johnston, Berw. 

 Club. Trans, vol. i. p. 199.— Ball, Proc. Roy. Irish 

 Acad. vol. ii. p. 192 (in part). — Thompson, Brit. 

 VOL. IV. H H 



