68 CATALOGUE OF CEPHALOPODA. 



covered with minute scales, perhaps indicating cups, especially 

 near the club; and the outer series of the cups on the shorter 

 arms are like the other, with cii'cular rings and no hooks. 



1. GONATUS AMCENA. 



Body cylindrical, tapering and acute behind. Fins rhombic, not 

 one third the length of the back. 



Onycoteuthis ? amoena MoUer, Ind. Moll, Green. 1, 



Hab. Greenland. 



a, b, c. Greenland. In spirits. From Dr. MoUer's Collec- 

 tion. 



2. LOLIGO. 



Body smooth, elongate, subcylindrical, pointed behind, truncated 

 in front. Fin on the hinder part of the sides of the back, united 

 behind, and forming together a rhomb. Mantle with two ridges 

 on the ventral side, fitting into two grooves on the base of the 

 siphuncle, and with a dorsal groove fitting in a longitudinal 

 ridge on the nape. — Head subcylindrical, narrowed behind the 

 eyes ; buccal membrane produced into angles ; angles furnished 

 with two series of small ringed cups. Eyes large, with a small 

 lacrymal before the globe of the eye. Aquiferous openings, one 

 on each side, between the third and fourth sessile arms, and six 

 on the lips. — Sessile arms subulate, triangular, or compressed ; 

 third pair large, and keeled externally ; cups oblique, in two 

 alternate series, on a small foot ; rings generally toothed on the 

 widest side ; the third and fourth arms shortly webbed, rest free. 

 Tentacular arms only partly retractile, cylindrical, attached by a 

 band to the lower arms. Club lanceolate, finned externally, with 

 four or more rows of cups. — Siphuncle moderate, not sunk into 

 a hollow, fixed by two central superior bands, and with an in- 

 ternal valve. — Shell horny, internal, occupying the whole 

 length of the body, lanceolate, like a pen, narrow above, and 

 with a central, longitudinal, keeled ridge, forming gutter within. 

 — Eggs in subcylindrical masses crowded together on sea weeds. 

 Rang, Mag. Zool. 1837, t. 47. 



TtvBoQ and TtvQiq Arisfoteles. 



Sepia sp. Linn. Syst. Nat 



Loligo Pliiiius, Belon, Rondeletius ; Lamarck., Mem. Soc. H.N. 1799. 



Syst. An. s. Vert. 60. 1801 ; Leach, Jour. Phys. 1817; UOrb. 



Moll. Viv. et Fos. i. 333. 

 Calmars plumes ou Pteroteuthis, sect. E. Blainville, Malac. 1825. 

 Teudopsis sp. Munster. 



