A. IE. Verrill — N'orth Atnerican Cephalopods. 433 



SEPIDEA Verrill. 



The integument extends entirely over the eye and thei-e is a pore 

 in front of it. Pupil crescent-shaped. Body commonly elongated. 

 Pen various, rarely absent, usually large, broad-lanceolate or ovate, 

 either horny or calcareous (spirally coiled, tubular and chambered 

 in /Spirula, in which it is posteriorly situated.) One of the ventral 

 arms of the male is usually hectocotylized. 



Mantle usually with three connective cartilages, rarely with one 

 (dorsal) or three muscular commissures. 



Family LOLIGINID^. 



Teuthidce (pars) Owen, Proc. Zool. Soc. London, p. 285, 1847. 

 Loligidce D'Orbiguy, Ceph. Acetab., p. 297, 1848. 

 Loligidce (pars) C4ray. Catal. Moll. Brit. Mus., vol. i, p. 66, 1849. 

 LoUginidcB (jMrs) H. & A. Adams, Genera Moll., vol. i, p. 35. 



Body more or less elongated, cylindro-couical. Fins elongated, 

 united and acute posteriorly, sometimes extending the Avhole length 

 of the body. Pen large, extending the whole length of the mantle, 

 with an acute, short, pen-like anterior shaft, and a broader, thin, 

 lanceolate blade. Connective cartilages of the mantle three, mov- 

 able. Eyes without a thickened false lid. Siphon provided with an 

 internal valve, and usually with a dorsal bridle. Olfactory crests, 

 about the ears, well-developed. Tentacular club large, with four 

 rows of denticulated suckers on the middle portion. Horny rings of 

 the suckers encircled externally by a raised median ridge. 



LoligO Lamarck. (See p. 307). 



15. LoligO Pealei Les. (p. 308). 



16. LoligO (Lolliguncula) brevis Biainv.* (p. 343). 



Sepioteuthis D'Orbig. (See p. 346). 



Sepioteuthis sepioidea D'Orb. (p. 345). 



* Professor Steenstriip, in a recent paper (Sepiadarium og Idiosepius.<]Vid. Selsk. 

 Skr., 6 R., 1, 3, p. 242, note, 1881), has proposed to make this species the type of a 

 new genus, Lolliguncula, because the female receives the spermatophores on the inner 

 surface of the mantle, — a character that seems to be scarcely of generic value, unless 

 it be reinforced by anatomical differences now unknown. Such characters may possi- 

 bly exist in the unknown males. 



