1912.] NATURAL SCIENCES OF PHILADELPHIA. 411 



pointed triangular teeth. The number of these papillae is about 

 thirty, the largest occurring in the neighborhood of the tenth, thence 

 gradually diminishing in size toward the tip. The suckers of the 

 dorsal rows maintain their arrangement in two series and there are 

 about three more pairs of unmodified suckers than in the ventral 

 row, but at this point they, too, become affected, their pedicels much 

 swollen and puffed out, and the suckers themselves relatively much 

 reduced, though not to quite so great a degree as in the ventral row. 

 The horny ring from one of these also shows minute teeth. The 

 right dorsal arm is longer, more slender, and more closely approxi- 

 mates the condition found in the 9 , but most of the suckers from 

 the present specimens have been lost through abrasion, so there may 

 have been minute differences now impossible to observe. On the 

 second arms most, if not all, of the suckers of both the two outermost 

 rows are two to three times as large as those of the two median rows, 

 except near the tip, where all are again subequal. My specimens 

 do not warrant the assertion that a similar condition prevails on the 

 third pair, but it certainly reappears on the ventral arms and is here 

 again nearly as conspicuous as on those of the second pair. A large 

 sucker taken from the latter is rotund, its base somewhat heart- 

 shaped; horny rings deep, smooth, but with a lateral indentation 

 on each margin, above which a large, thin, hood-shaped expansion 

 obstructs part of the aperture and destroys its otherwise nearly 

 circular outline. 



Tentacles stout, elastic, cylindrical; inner surface slightly flattened; 

 half as long again as the body and more. Clubs little expanded, 

 keeled, tips recurved; inner face rounded, everywhere armed with 

 exceedingly numerous and minute, long-stalked suckers, giving it a 

 finely villous appearance. 



Buccal membrane fleshy, pointed, rugose within. 



Radula not examined. 



Gladius wanting. 



Color in alcohol a light brownish-buff; heavily maculated both 

 above and below with numerous large dark slate-colored chromato- 

 phores, which are least numerous on the inner surfaces of the arms 

 and the lower aspect of the fins. On the under side of the latter 

 over the area adjacent to the base of attachment they are absent. 



