A. E. Verrill — North American Cephalopods. 
433 
SEPIDEA Terrill. 
The integument extends entirely over the eye and there 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 Spirilla , 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 LOLIG-INIDAE. 
Teuthidce (pars') Owen, Proc. Zool. Soc. London, p. 285, 1847. 
Loligid<B D’Orbigny, Ceph. Acetab., p. 297, 1848. 
LoligidcB (pars) Gray. Catal. Moll. Brit. Mus., vol. i, p. 66, 1849. 
Loliginidas (pars) H. & A. Adams, Genera Moll., vol. i, p. 35. 
Body more or less elongated, cylindro-conical. Fins elongated, 
united and acute posteriorly, sometimes extending the whole 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 Steenstrup, 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, Isdliguncula, 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. 
