152 U.S. NATIONAL MUSEUM BULLETES" 2 34 



The arms are short, in the order 3.4.2.1, the longest about 12.0 

 percent of the mantle length. The arms are romidish in cross-section, 

 mostly smooth, but III is equipped with a weak keel. All the arms are 

 bordered by dorsal and ventral protective membranes which are 

 narrow except basally. Here they are united to form, as Sasaki (1929) 

 stated, an internal membrane. The arm suckers are biserial with one 

 or more minute suckers basally after which they increase in size to the 

 8th pair after which they decrease to the extremity. Basal suckers 

 are enthe, with a smuate edge; the larger midportion suckers bear 

 20 to 30 broad and closely set teeth, the distal ones entire proximally 

 but toothed distally with 6 to 8 small rounded teeth (see Sasaki 

 (1929), p. 320, figs. 146a-b). 



The tentacles are short, little larger in diameter than the arms; they 

 bear smal], expanded clubs which taper rapidly distally. There is a 

 protective membrane on each side and a small dorsal web distally. 

 There is no distinct carpal cluster but there are eight or nine pairs of 

 minute suckers separated by about the same number of minute pads 

 evenly spaced along the oral sm'face of the stalk. The tentacular 

 suckers are in four rows, often crowded, and are probably unique in 

 structure. The marginal suckers of the hand are compressed laterally, 

 the small proximal portion with low serrations, but the sides are equip- 

 ped with about six teeth each and terminate in a distal pair of widely 

 spaced sharp incurved hooks. The large rhachial suckers of the middle 

 rows are strongly modified, the ring being compressed and smooth with 

 the exception of two large hooks distally which give the suckers 

 a bicuspid appearance. The distal suckers are smaller, toothed on the 

 greater part of the ring (8-15 teeth, of which the distal two are much 

 the largest) . 



Measurements and indices of a female specimen of Taonius pavo 

 (Le Sueur) are: 



Type. — Academy of Natural Sciences of Philadelphia. 



Type locality. — Sandy Bay, Mass. 



Discussion. — Because of the condition of the animal, no further 

 details external or interna] were observable. No comparisons can be 

 drawn with the Japanese specimens or those from elsewhere; the 

 value of the specimen lies probably entirely in its being a new record 

 for the Philippine Islands. 



Distribution. — Near Kashiki Island, Kiushiu, 369 fms., {Albatross), 

 Sandy Bay (LeSueur), Gulf Stream (Verrill), Madeira (Joubin), 



