74 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



distant (lat. 9° 22' 30" N., long. 123° 42' 40" E.) ; 717 meters (392 

 fathoms) ; August 11, 1909; glob. Oz. 



Three specimens (Cat. No. E. 290, U.S.N.M.). 



Albatross station 5529; between Siquijor and Bohol Islands; 

 Balicasag Island (C.) bearing N. 11° E., 12.59 kilometers (6.9 miles) 

 distant (lat. 9° 23' 45" N., long. 123° 39'- 30" E.) ; 806 meters (441 

 fathoms) ; August 11, 1909 ; gy. M., Glob. 



Three specimens (Cat. Nos. E. 233, E. 285, U.S.N.M.). 



Albatross station 5536; between Negros and Siquijor; Apo Island 

 (C.) bearing S. 26° W., 21.87 kilometers (11.8 miles) distant (lat. 9° 

 15' 45" N., long. 123° 22' 00" E.) ; 510 meters (279 fathoms) ; 

 August 19, 1909 ; gn. M. 



Seven specimens (Cat. Nos. 40960, E. 286, U.S.N.M.). 



Albatross station 5541; Tagolo Light bearing S. 65° W., 23.54 

 kilometers (12.7 miles) distant (lat. 8° 49' 38" N., long. 123° 34' 

 30" E.) ; 400 meters (219 fathoms) ; August 20, 1909 ; fne. S., brk. Sh. 



One specimen (Cat. No. E. 243, U.S.N.M.). 



Albatross station 5622; between Gillolo and Makyan Islands; 

 Makyan Island (NE.) bearing N. 66° W.; 503 meters (275 fathoms) ; 

 November 29, 1909 ; gy. M. 



One specimen (Cat. No. E. 238, U.S.N.M.). 



Albatross station 5623; between Gillolo and Makyan Islands; 

 Makyan Island (S.) bearing S. 88° W., 13.90 kilometers (7.5 miles) 

 distant (lat. 0° 16' 30" N., long. 127° 30' 00" E.) ; 497 meters (272 

 fathoms) ; November 29, 1909 ; fne. S., M. 



Two specimens (Cat. Nos. 40975, E. 239, U.S.N.M.). 



Albatross station 5624; between Gillolo and Makyan Islands; 

 Makyan Island (S.) bearing N. 67° W., 16.49 kilometers (8.9 miles) 

 distant (lat. 0° 12' 15" N., long. 127° 29' 30" E.) ; 527 meters (288 

 fathoms) ; November 29, 1909. 



One specimen (Cat. No. E. 287, U.S.N.M.). 



Albatross station 5626; between Gillolo and Kayoa Islands; Kayoa 

 Island (SE.) bearing S. 5° W., 12.42 kilometers (6.7 miles) distant 

 (lat. 0° 07' 30" N., long. 127° 29' 00" E.) ; 485 meters (265 fathoms) ; 

 November 29, 1909 ; gy. M., fne. S. 



Two specimens (Cat. Nos. E. 236, E. 288, U.S.N.M.). 



Notes. — After describing O. inutilis on the basis of four specimens 

 collected by the Siboga (Koehler '05, p. 199), I wrote in the discus- 

 sion of the affinities of this species that it was very close to 

 O. gratiosa, and that I had even hesitated to separate them. The 

 characters upon which I had relied to distinguish these two species 

 were the form of the mouth shields, the development of the small 

 spines which ornament the distal border of the upper arm plates, and 

 the contiguity of the upper and under arm plates at the base of the 



