[165] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 375 



phores in the sac, taken at Key West by Dr. J. B. Holder and Captain 

 Pickering ; and a large female, with ripe eggs in the oviducts, and 

 sperm atophores on the buccal membrane, taken July, 185!>, at Fort 

 Jefferson, by Capt. D. P. Woodbury. Other localities are Martinique 

 (Blainville, Rang); Cuba (D'Orbigny); Honduras (Cray). 



Family SEPIOLID^ Keft. 



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

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

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



Body, short, thick, blunt posteriorly. Eyes with lower lid free, upper 

 adherent; sometimes free all around; pupils often circular. Fins sepa- 

 rate, laterally attached near the middle of the body. Tentacular arms 

 more or less retractile into large sacs. Pen little developed, not reach- 

 ing the end of the mantle; sometimes absent. Siphon-valve small; no 

 dorsal bridles. Dorsal arms usually hectocotylized in the male. Eggs 

 large, few, not enclosed in capsules. 



This family is related to LoUginidic, but differs widely from the latter 

 in the eye-lids, visceral anatomy, &c. 



STOLOTEUTHIS Verrill, 1881. 



Body short, stout, rounded posteriorly. Eyes with free eyelids ; pupils 

 round. Pen none. Arms united together by a broad web. Fins large, 

 narrowed at base. Mantle united directly to the head by a large dorsal 

 commissure ; lateral connective cartilages of the mantle elongated, fitting 

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

 internal valve. Tentacular club with small, long-pediceled suckers, in 

 eight or more rows ; rims not toothed. 



The males and some of the females have some of the middle suckers 

 of the second pair of arms much enlarged. In the male, the suckers at 

 the base of both dorsal arms are larger and more crowded than in the 

 female, and the web is more swollen at the sides. 



Stoloteuthis leucoptera Verrill. — Butterfly Squid. 



Sepiola leucoptera Verrill, Amer. Journ. 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 ; Trans. 

 Conn. Acad., v, p. 347, pi. 31, figs. 4 and 5 ; pi. 54, fig. 4, June, 1881. 

 Stoloteuthis leucoptera Verrill, Trans. Conn. Acad., v, Oct., 1881. 



Plate XXXVI, figures 1, la, 2. 



Size moderate; the largest specimens observed are probably full- 

 grown. Body short, thick, swollen, with the mantle smooth. Ven- 

 tral surface, in the middle, with a large, somewhat flattened, brown, 

 heart-shaped or shield-shaped area, bordered with blue, and surrounded, 

 except in front, by a silvery white band, having a pearly or opalescent 

 luster. Eyes large, with round pupils; lids free all aroum . Fins large, 



