342 EEPOKT OF COMMISSIONER OF FISH AND FISHERIES. [132] 



crescent-shaped, encroached upon clorsally by the iris ; a small mucous 

 pore in front of the eyes ; behind the eyes, on each side, there is an 

 oblique transverse and two longitudinal, erect, thin crests, in relation 

 with the ears. Siphon situated iu a shallow groove, united to the head 

 by a pair of dorsal bridles, and furnished with a large internal valve. 

 Six buccal aquiferous pores, and a pair of branchial pores, one on each 

 side, between the bases of the third and fourth pairs of arms. Buccal 

 membrane with seven elongated points, covered on their inner surfaces 

 with small suckers; in the female with a special organ (Plate XXVI, 

 fig. 4, s), below the beak, on the ventral side, for the attachment of the 

 sperm atophores. 



Sessile arms angular; basal web rudimentary or none; suckers in two 

 rows, oblique, deep cup-shaped; horny rings toothed on the broad side, 

 and surrounded with a median ridge. Male with one of the ventral 

 arms (usually the left) hectocotylized, near the tip, by an enlargement 

 of the bases of the pedicels of the suckers and a decrease or disappear- 

 ance of the cups. Tentacular arms long and strong, with an expanded 

 club, provided with marginal membranes and a dorsal keel ; suckers, 

 on the widest part, usually in four rows, those in the two central rows 

 larger, broad-urceolate; smaller ones cover the proximal and distal por- 

 tions ; no connective suckers on the club or along the arm. Sucker- 

 rings surrounded externally by a raised band. 



Oviduct large, developed only on the left side. Xidamental glands 

 large in front of heart. Eggs in fusiform, gelatinous capsules, attached 

 by one end, and usually radially united into large clusters. 



Loligo Pealei Lesueur {typical form). 



Lolirjo PealtUjesuem; Journ. Acad. Nat. Sci. Philad., vol. ii, p. 92, pi. 8, 1821. 

 Loligo Pcalii Blainville, Diet. Sci. Nat., vol. xxvii, p. 144, 1823. 

 Ferussac & D'Orbigny, Ceph. ActStab., p. 311, Calmars, pi. 11, figs. 1-5, 



pi. 20, figs. 17-21 (details). 

 Gray {Pcalii), Catal. Moll. Brit. Mns., vol. i, p. 71, 1849. 

 Binney, in Gould's Invert. Mass., ed. 2, p. 514, pi. 25, figs. 339, 340 (figure 



erroneously referred to 0. Barlramii). 

 Verrill (Pcalii), Report on Invert. Vineyard Sd., pp. 440, 635 (sep. copies, p. 



341), pi. 20, figs. 102-105, 1877. 

 Tryon (Pcalii), Man. Conch., vol. i, p. 142, pi. 51, figs. 133-140 (figs, from 



Fe"r. & D'Orb. and Dekay)/ 

 Verrill, Amer. Journ. Sci., vol. iii, p. 281, 1872; Araer. Naturalist, vol. viii, 

 p. 170 (habits); Amer. Journ. Sci., vol. xix, p. 292, 1830(descr.) (Pealei)', 

 Trans. Conn. Acad., vol. v, pp. 308-340, pi. 29, figs. 1-4, pi. 37, figs. 1-3, 

 pi. 39, fig. 4, pi. 40, pi. 45, figs. 3, 4, 1881. 

 Brooks (Pealii), Develop, of the squid, in Auniver. Mem. Boston Soc. Nat. 

 Hist. pi. 1-3, March, 1881 (embryology). 

 Loligo punctata Dekay, Nat. Hist. N. Y., Mollusca, p. 3, pi. 1, fig. 1, 1843 

 (young). 

 Binney, in Gould's Invert. Mass., p. 513 (after Dekay). 

 Tryon, Amer. Mar. Conch., p. 14, pi. 43, figs. 10, 11 (after Dekay). 

 Variety borealis Verrill. 



Loligo Pealei var. borealis Verrill, Amer. Journ. Sci., vol. six, p. 292, 1880. 



