166 HISTIOTEUTHTS. 



with very close acute teeth, longest on the broader side ; tenta- 

 cles twelve times as long as the body, with an occasional sucker, 

 and with :> lanceolate club covered with peculiar, long peduncu- 

 lated suckers. Shell very narrow ; the lowest part with the 



longest and broadest expansion. 



Mediterranean. 



C. BONPLANDI, Yerany. PI. 70, figs. 272, 273. 



Body elongate, conical; head moderate; fins half the length 

 of the body, together rhomboidal ; sessile arms subulate, with 

 rounded tubercles at the end, unequal, order of length 3. 2, 1, 4 ; 

 tentacles lost ? Shell very narrow in the middle, narrow above 

 and dilated below. 



29 N. lat., 39 W. long., Atlantic Ocean. 



Genus HISTIOTETITHIS, Orbigny. 



H. BONELLIANA, Fer. PL 71, figs. 274-281. 



Body short, obtuse ; head very large ; head, body and arms 

 covered with scattered tubercles; sessile arms unequal, fleshy; 

 fins semicircular, broad. Shell broad, lanceolate, with a second 

 smaller shell placed on its interior face. 



Total length, 400 mill. ; length of body, 70 mill. 



Mediterranean. 

 H. RUPPELLII, Yerany. PI. 71, fig. 282 ; pi. 72, figs. 283. 284. 



Body, head and arms granular; head large; second and third 

 pairs of arms longer; first and fourth shorter. Shell oval, 

 lanceolate, attenuated in front, acuminated behind ; with a 

 second smaller shell placed on its interior face. 



Total length nearly three times that of H. Bonelliana. 



Mediterranean. 

 H. COLLINSII, Yerrill. 



A very large and handsome species, with a broad thin web 

 extending between and nearly to the ends of the six upper 

 arms. Tentacles about 2 feet long, slender, the club broad, oval, 

 bordered by a membrane, and ending in a tapering tip, on the 

 back of which is a keel enlarging backward to the end. where it 

 forms a rounded lobe. The most expanded portion of the club 

 bears live rows of suckers, with finely serrate rings; two rows 

 contain much the lar^eM suckers, four or live in each, the more 

 central of the two rows containing four suckers larger than the 



