ONYCHOTETJTHnxa: : OCSOPODOTEUTHIS, ACANTHOTEUTHIS. 51 



Onychoteuthis Morisii Verany, Mem. del Acad. Torino, t. 1. t. 4. 

 (1837). 



Hab. North Atlantic Ocean. 



4. OCTOPODOTEUTHIS. 



Body conical, tapering behind. Eyes naked ? Skin round the 

 eyes contractile ? Fins large, rounded on the hinder part of the 

 back, separated by a notch in front, united behind. Mantle 

 with two oblong ridges inside, and with two grooves on the base 

 of the siphuncle, free on the back, with central ridge fitting into 

 a cervical groove. — Sessile arms cylindrical, curled at the end ; 

 with a double series of small, nearly sessile, subcylindrical cups, 

 armed with short curved hooks. Tentacular arms very short ; 

 club small. — Siphuncle conical, with two medial superior bands. 

 — Shell cartilaginous, very slender, as long as the back. 



Octopoteuthis Riippell Sp Krohn in Giorn. del Gabinetto di Messina, 



xxvi. 1844, 6. 

 Octopodoteuthis Riippell, MS. 1845; Gray, Proc. Z. Soc. 1847, 



205. n. 795. 

 "V Crania Krohn, Erichson, Arch. 1847; Verany, Cephal. exSicilia,t.i. 



1. Octopodoteuthis Sicula. 



Sessile arms rounded externally ; the third pair rather the 

 strongest. Fins rounded, about three fourths the length of the 

 body, wider than the length of the body, continued over the 

 back, with an acute notch behind, a rounded one above. 



Octopoteuthis Sicula Riippell 8f Krohn, in Giorn. del Gabinetto 



di Messina, xxvi. 1844, 6. 

 Verania Sicula Krohn, Erichson, Arch. 1847, t. . f. .; Verany, 



Cephal, ex Sicilia, t. 1. f. 4. 



Hab. Sicily. 



a. Sicily. In spirits. From Dr. Edward Ruppell's Collec- 

 tion. 



5. ACANTHOTEUTHIS. 



Fossil. Animal elongate, cylindrical. Fins terminal, short, angular. 

 — Arms ten, rather unequal, with two lines of hooks. — Shell in- 

 ternal, horny, elongate, tapering, broad above, pointed behind, 

 without any terminal appendix, and with a central longitudinal 

 groove gradually becoming wider and less evident above. 



D 2 



