1911] 



Berry: Notes on Cephalopods. 



305 



/4>^tA/V,.A_/vyi^ 



Fig. 1. — Dosidicus gigas (d'Orbigiiy) Pfeffer, Horny ring from large 

 suclcer near base of second arm (X 4). 



Fig. 2. — Horny ring from a median sucker of the tentacle club (X o). 

 Fig. 3. — Horny ring from a lateral sucker of the tentacle club (X 7). 



On the elul)s of the tentacles there are tour rows of suckers 

 (pi. 21, fig'. 2). those of the two median series attaining' a size 

 almost commensurate with that of those of the proximal portions 

 of the sessile arms, but more flattened, and with their horn.y 

 rings e(|ui])ped with one or two more teeth, one tooth in each 

 quadrant being considerably enlarged (text fig. 2). The lateral 

 suckers are nmch smaller and their horny rings extraordinarily 

 deep on the upper side, besides possessing but 16-17 teeth (text 

 fig. 3). The so-called "fixing apparatus" comprises a single 

 well-developed series of four rounded, fleshy, elevated tubercles 

 or knobs occurring in alternation with three small smooth-ringed 

 suckers along the dorsal margin in the carpal region of the club 

 (pi. 21. fig. 2). 



Fig. 4. — Foveola of Dosidicus gigas. 



