A. E. Verrill — North American Cephalopods. 431 



ChiroteuthiS D'Orb. (See p. 299). 

 (Jhiroteuthis is the only genus in this family that has been hitherto 

 recognized. 



8. ChiroteuthiS lacertosa VerriU. (pp. 299, 408). 



Brachioteuthis Verrill. (See p. 405). 



9. Brachioteuthis Beanii Yen-ill. (p. 406). 



Calliteuthis Ven-ill. (p. 295). 



10. Calliteuthis reversa Veniii. (p. 295). 



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



Family HISTIOTEUTHID.^, nov. 



Loligopsidce {pars) D'Oibig., Cephal. Acetab., p. 320, 1835-48. 

 Ghiroteuthidm {pars) Gray, Catal. Brit. Mus., Moll., vol. i, p. 42, 1 849. 



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 

 arras 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 Luligo. 



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



11. Histioteuthis Collinsii Yerrill. (pp. 234, 300. 404). 



TAONIDEA Merrill. 

 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 Avith special elevated processes, or flaps, in the basal portion. 

 Stomach small, far back; intestine very long, covered w^ith lateral 



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

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

 in the former. My specimens lack the siphon. 



