LOLIGID. 3 
O. bartlingii, Zesweur; Gray, Cat. Moll. Brit. Mus. 
Cephalopoda, p. 54; Chenu, f. 74. Body elongate ; back with a central 
transparent line over the keel of the shell; sessile arms slender ; 
tentacular arms with six large hooks. Shell dark brown, with a short 
central keel above and a ridge beneath. (Gray.) 
Auckland. Wellington. Indian Ocean. 
Genus, OMMASTREPHES—D’Orbigny. 
Fins terminal, broad, together rhomboidal ; sessile arms subulate ; 
tentacular arms scarcely enlarged at the end, both they and the sessile 
arms with cups and horny rings. Shell horny, flexible, narrow, 
gradually wider above, terminated by an expansion that forms a conical 
cavity : acentral and two marginal ribs. 
O. sloanii, Gray, Zc, p. 61. Body cylindrical ; fin rather more 
than one-third the length of the body; sessile arms compressed, 
cups equal, oblique, in two rows, higher side of rings with acute teeth, 
lower smooth; tentacular arms slightly keeled externally, cups of 
lower part small, in two rows, of middle part in four rows ; rings with 
distant teeth all round. Colour purplish, caused by minute dots placed 
close together; beak black. (Gray.) 
Bluff to Auckland. Indian Ocean. 
FAMILY—LOLIGIDA. 
Fins either posterior or lateral ; eyes covered with skin; ears with 
a transverse ridge. Shell horny, lanceolate, pennate, or spathulate. 
Genus, SEPIOTEUTHIS-—-Ferussac. 
Fins extending the whole length of the back ; sessile arms unequal, 
with two rows of cups; tentacular arms long, club enlarged, cups in 
four rows. Shell pennate, lanceolate, narrow in front and with a central 
keel. 
S. lessoniana, /éruss; Gray, 1c, p. 80. Body elongate, 
spotted with violet; fins dilated posteriorly; sessile arms elongate, 
cups oblique, rings with distant acute teeth; tentacular arms bluntly 
clubbed, cups large, very oblique, rings with distant acute curved 
teeth ; buccal membrane with cups. Shell lanceolate, broadest in the 
middle, outer edge not thickened, central rib broad, extented in front, 
one-fifth the length. (Gray.) 
Bay of Islands (Antartic Expedition.) New Guinea. 
S. bilineata, Quoy and Gaimard, .c.,ii., 66, t. 2,f 1 (2); S. major, 
Cat. Mar. Moll. of N.Z. Body cylindrical, attenuated behind ; fins 
rounded, fleshy,- most dilated in the middle of the body; _ buccal 
membrane without cups; sessile arms rather short, order of length, 4, 
3, 2, 1, cups large, rings with short blunt teeth on the higher side; 
tentacular arms strong, with cups and rings like those of the sessile 
arms. Shell lanceolate, widest at about two-fifths of its length, edge 
not thickened, central rib broad, extended in front about one-sixth of 
