36 Moll. 
MOLLUSCA. 
1881, pp, 3-8, with a woodcut representing the situation of a gland on the 
back of Ommastrephes pteropus (Steenstr.) and gigas (Orb.). 
Architeuthis. About 25-30 specimens found on the Grand Banks of 
Newfoundland in 1875, most of them quite dead and mutilated by birds 
or fishes, without arms, 10-15 feet long and about 18 inches in diameter, 
one weighing about 700 lb. Verrill, Am. J. Sci. (3) xxi. pp. 251 & 255; 
also Ann. N. H. (5) vii. pp. 351 & 352 ; abstract in J. B. Micr. Soc. (2) i. 
p. 586. 
Plecioteuthis, g. n. Transverse section of the arm quadrangular. F. 
grandiSf sp. n., only one arm known, 9 feet long, 4 inches in diameter, 
with 292 suckers, locality unknown. Owen, Tr. Z. S. xi. pp. 156-158, 
pis. xxxiv. & XXXV., with critical notes on some other large Cephalopoda 
and a woodcut representing Mouchezia from the island of St. Paul, 
p. 159. 
Mastigoteuthis, g. n. Tentacular arms long, without any distinct club, 
with exceedingly numerous and minute suckers ; pen narrow and bicostate 
anteriorly, posteriorly with a long tubular cone; connective cartilages 
well developed on each side ; eye-lids simple. M. agassizi, sp. n., Yerrill, 
Bull. Mus. 0. Z. viii. p. 100, pi. i. & pi. ii. figs. 2 & 3, East coast of United 
States, 33-34^^ N. lat., 647 & 1632 fath. 
Giant cuttle-fish thrown on shore at Cette, Southern France ; Doumet, 
Rev. Montp. ii. pp. 293-299. 
Myopsid.3<j. 
J. Steenstrup arranges the genera as follows — 
Family Sepiolini. Arm of the first pair hectocotylized ; sperma- 
tophores deposited directly at the opening of the oviduct ; 
eggs isolated. Rossia, Sepiola, and (probably) Ileteroteuthis. 
Family Sepio-Loliginei. Arm of the fourth pair hectocotylized ; 
spermatophores deposited on the buccal membrane of the 
female, which is specially modified for this purpose. 
Group of Loligo : Internal shell only horny ; eggs united into 
a grape-like mass. Sepioteuthis, Loligo^ and LoUolus. 
Group of Sepia : — 
(а) Eusepii: Fins lateral, occupying nearly the whole 
length of the body. Internal shell with a cal- 
careous layer. Mantle supported by a cartilagi- 
nous, semilunar, or conical button, and a corre- 
sponding pit. Sepia, SepieUa, and Ilemisepius. 
(б) Sepiadarii : Fins narrow, occupying only a smaller part 
of the length. No internal shell. Mantle united to 
the neck or the back. Sepiadarium and Sepioloidea. 
(c) Idiosepii : Fins small, terminal. Mantle supported by 
a cartilaginous prominence or ridge, and a corre- 
sponding pit or furrow. Idiosepius, no internal 
shell, and Spirula. 
Dan. Selsk. Skr. (6) i. pp. 224-233, & 237 & 238. 
Rossia sublevis (Yerr.) Eask coast of United States, 32°-39° N: lat. ; 
Yerrill, Bull. Mus. C. Z. viii. p. 104, pi. iii. figs. 2-4, pi. vii. fig. 4, 
