A. E. VerriU — N'orth American Cephalopods. 347 



Family SEPIOLID^ Keff. 



Kefferstein, in Bronn, Thier-Eeich, iii, p. 1443, 1866. 

 Gill, Arrangement of Families of Mollusca. p. 2, 1871. 

 Tryon, Man. Conch., i, pp. 102, 155, 1879. 



Body short, thick, bluntly rounded posteriorly. Fins large, sepa- 

 rate, laterally attached, on the middle of the sides^ of the body. 

 Siphon with small internal valve; no dorsal bridles. A large bra- 

 chial cavity, extending back beneath the eye, into which the ten- 

 tacular arms can be more or less retracted. Pen little developed, 

 lanceolate, not reaching the end of the mantle. Integument beneath 

 the eye thickened so as to be iised as a false eye-lid, in addition to 

 the transparent skin over the eye. A lachrymal pore in front of each 

 eye ; a brachial pore between the third and fourth pairs of arras. 

 Eggs large, few, not enclosed in capsules. Accessory nidamental 

 glands well developed. Branchial chamber divided into two cavities 

 by a median ])artition or septum, which extends forward to the 

 base of the siphon. This family is, in many respects, closely related 

 to Loliglnidm, but differs widely from the latter in its visceral anat- 

 omy. 



SEPIOLA Leach. 



SepioJa Leach, Zool. Miscel., iii. p. 137, 1817 (t. Gray). 

 D'Orbigny. Ceph. Aoetab., p. 224. 

 Gray, Catal. Moll. Brit. Miis., i, p. 91, 1849. 



Body short, stout, rounded posteriorlj\ Fins large, narrowed at 

 base. Mantle united directly to the head by a large, dorsal commis- 

 sure; lateral connective cartilages of the mantle elongated, fitting 

 into elongated margined pits on the base of the siphon. Siphon with 

 an internal valve. A brachial aquiferous pore between the bases of 

 the third and fourth pairs of arms, on each side. A lachrymal pore in 

 front of each eye. Buccal membrane with seven lobes, without suck- 

 ers. Tentacular arms more or less retractile into large cavities below 

 the eyes ; club with numerous, very small, nearly equal, long-pedi- 

 celled suckers, in eight or more rows ; rims not toothed. The males 

 differ from the females in having some of the middle suckers of the 

 lateral arms much enlarged. 

 Sepiola leUCOptera Verrill. (Butterfly Squid.) 



Verrill, Amer. .Tourn. Sci., vol. xvi, p. 378, 1878. 



Tryon, Man. Conch., i, p. 158, 1879. (Description copied from preceding). 



Verrill, Amer. Journ. Sci., xix, p. 291, pi. 15, figs 4 and 5, April, 1880. 



Plate XXXI, figures 4, 5. Plate LIV, figure 4. 

 Species rather small; the largest specimens observed are probably 

 Trans. Conn. Acau., Vol. Y. 42 June, 1881. 



