A. E. Verrill — North American Cephalopods. 431 



Chiroteuthis D'Orb. (Seep. 299). 

 Chiroteuthls is the only genus in tliis family that has been hitherto 

 recognized. 



8. Chiroteuthis lacertosa Verriii. (pp. 299, 408). 



Brachioteuthis Verrill. (See p. 405). 



9. Brachioteuthis Beanii Ven-iii. (p. 406). 



Calliteuthis Yerrill. (p. 295). 



10. Calliteuthis reversa Ven-iii. (p. 295). 



Calliteuthis OCellata (Owen) Yerrill. (p. 402). 



Family HISTIOTEUTHID^E, nov. 



Loligopsidm (jxirs) D'Orbig., Ceplial. Acetab., p. 320, 1835-48. 

 Chiroteuthidm {pars) Gray, Catal. Brit. Mus., Moll., vol. i, p. 42, 1849. 



Body small, short, with small caudal fins. Mantle united to the 

 neck by three movable cartilages. Siphon with neither dorsal bridle 

 nor internal valve (?).* Head large. Olfactory crests absent. Eyes 

 large, not prominent ; lids free and simple ; no sinus. Buccal mem- 

 brane with six smooth lobes ; buccal aquiferous openings four. Nine 

 brachial openings at the bases of the tentacular arms. Six upper 

 arms usually united by a very broad web ; sucker-rings convex, with 

 small, oblique apertures. Tentacular arms moderate, with a well- 

 developed club, bearing large, normal, central suckers, and small 

 marginal ones ; proximal part of the club with connective suckers 

 and tubercles. Pen broad, short, lanceolate, much like that of Loligo. 



Histioteuthis D'Orbigny. (See p. 233). 



11. Histioteuthis Collinsii Yerrill. (pp. 234, 300.404). 



TAONIDEA Verrill. 

 Eyes large, stalked or prominent, having free lids, but no sinus. 

 Mantle united to base of siphon and back of neck by three muscular 

 commissures. Siphon large, without a true subterminal valve, but 

 usually with special elevated processes, or flaps, in the liasal portion. 

 Stomach small, far back ; intestine very long, covered with lateral 



* According to D'Orbigny there is no valve in this genus, nor in Chiroteuthis, but in 

 the latter tliere is certainly a valve, and it may have been overlooked by him, also, 

 in the former. My specimens lack the siphon. 



