28o report of commissioner of fish and fisheries. [76] 



ticulated suckers may or may not accompany the hooks; tip of arm 

 with a cluster of small, smooth-rimmed suckers ; proximal part of club 

 with a mixed group of connective tubercles and smooth-ringed suckers, 

 by which the arms can be fastened together and used in concert. Ses- 

 sile arms with hooks, with suckers, or with both. Eyes with free lids 

 and a sinus. Mantle united to neck by three simple, movable, con- 

 nective cartilages. Siphon with a valve and with dorsal bridles. Nu- 

 chal or alfactory crests well developed; sometimes several longitudinal 

 crests exist on each side. Pen thin, lanceolate, usually with a posterior 

 hooded portion, and sometimes terminated by a solid cartilaginous cone. 

 Odontophore in Cheloteuthis and Gonatus with only five rows of teeth, 

 in others with seven rows. 



For a synopsis of the hitherto-described existing genera of this 

 family, see pp. C9, 70. 



Owen's family Teuthidce included nearly all the Becacera having horny 



internal shells. As adopted by D'Orbigny, it included Ommastrephida: 



and Teuthidce. 



CHELOTEUTHIS Verrill. 



Trans. Conn. Acad., vol. v, p. 234, Jan., 1831; Bulletin Mus. Comp. Zool., vol. viii, 

 p. 109, 1881. 



Allied to Unoploteuthis, LestoteutMs, and Abralia, but with a more 

 complicated armature than either of these genera. Ventral arms with 

 denticulated suckers, arranged in four rows; other arms have two me- 

 dian rows of sharp incurved claws, (distal portions have lost their arma- 

 ture). Tentacular arms long, with broad clubs, strongly keeled exter- 

 nally, and with series of connective suckers and tubercles extending for 

 some distance along the inner surface of the arms. Tentacular club pro- 

 vided with a marginal row of connective suckers, alternating with tuber- 

 cles, along one margin ; with a central row of unequal hooks, some of them 

 very large; with submedian groups of small, slender-pediceled suckers 

 (or hooks); with marginal series of small suckers; and with several 

 rows of small suckers covering the prolonged distal portion of the face. 

 Connective cartilages on the base of the siphon simple, long-ovate ; the 

 corresponding processes of the mantle are simple longitudinal ridges. 

 Odontophore with five rows of teeth. 



The caudal fin, pen, and many other parts are destroyed. 



Cheloteuthis rapax Verrill. 



Cheloteuthis rapax Verrill, Trans. Conn. Acad., vol. v, p. 234, pi. 49, figs. 1-1/, 

 Jan., 1881 ; Bulletin Mus. Comp. Zool., vol. viii, p. 110, Cephalopoda, pi. 

 2, figs. 1-1/, 1881. 



Plate XV, figures 3-3/, 4. 



The body was rather short and thick, tapering rapidly backward. 

 The caudal fin appears to have been short-rhomboidal, but this is un- 

 certain. The siphon is large, with an internal valve. The connective 

 cartilages (fig. 3 e) on the sides of the base of the siphon are long- 

 ovate, with the posterior end widest and rounded. The corresponding 

 cartilages on the inside of tha mantle are simple longitudinal ridges. 



