236 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



(lat. 8 58' 07" N., long. 123 32' 45" E.) ; 658 meters (360 

 fathoms) ; August 10, 1909 ; S. 



One specimen. 



Albatross station 5558; Jolo Island and vicinity; Cabalian Point 

 bearing S., 2.04 kilometers (1.1 miles) distant (lat. 5 51' 33" N., 

 long. 121 00' 58" E.) ; 27 meters (15 fathoms) ; September 18, 

 1909; Co. 



One specimen (Cat. No. 41073, U.S.N.M.). 



Tobea Island ; December 15, 1909. 



One detached arm (Cat. No. 41071, U.S.N.M.). 



Davao Bay; from pearl oysters. 



One specimen (Cat. No. E. 335, U.S.N.M.). 



Samoa (Sir Charles N. E. Elliot). 



One specimen (Cat. No. E. 336, U.S.N.M.). 



Notes. In the specimen from station 5558 (pi. 31, fig. 4) the 

 dorsal surface of the disk is gray, with small blue spots on the radial 

 shields. The dorsal surface of the arms is blue, somewhat spotted 

 with lighter and darker. A white band runs along the dorsal median 

 line of the arms. The spines are light gray ; the central surface of 

 the arms is white, with, on the sides, blue spots which are more or 

 less close together and very unequal in size. 



The specimen from station 5179 has the dorsal surface very dark 

 gray blue, and a white line runs along the whole length of the dorsal 

 surface of the arms. 



In the specimen from station 5249 the general color is dark gray ; 

 the dorsal surface of the arms is of a more or less marked blue, but 

 perfectly uniform ; the arm spines are gray blue. The dorsal surface 

 of the disk is uniformly covered with small granules. 



In the specimen from Davao Bay the diameter of the disk is 15 

 mm. ; the general coloration is gray blue ; a longitudinal line extends 

 along the middle of the dorsal surface of the arms, but is only 

 faintly marked ; the arms are ringed with lighter and darker. 



In the specimen from station 5524, in which the diameter of the 

 disk is only 7 mm., the general color is uniform grayish blue. 



To the specimens collected by the Albatross in the Philippines 

 was added a large specimen from Samoa collected by Sir Charles 

 N. E. Elliot. I show here a portion of the dorsal surface of one of 

 its arms (pi. 33, fig. 10). 



The club spines of the dorsal surface of the disk are ordinarily 

 rather narrow, three or even four times as long as broad, and cylin- 

 drical rather than conical; they terminate in a few, usually three, 

 points, which are equal and regularly arranged, but it is not rare to 

 meet with four or even five more or less unequal points (pi. 100, fig. 2a) . 

 The first ventral spine is transformed into a hook at some distance 

 from the disk, and the hooks once definitely formed are rather 



