OPHIUEANS OF THE PHILIPPINE AND ADJACENT WATERS. 421 



Affinities and distinctive features. Ophiomusium spinulosum be- 

 longs to that section of the genus Ophiomusium in which the upper 

 and under arm plates continue throughout the whole length of the 

 arms. It is easily distinguished from all the other species of this 

 group having three pairs of tentacle pores by the large size of these 

 pores, the borders of which may carry each two or three scales, and 

 by the numerous spinules which occur on the dorsal surface of the 

 disk, as well as on the upper and side arm plates. 



OPHIOLIPUS GRANULATUS Koehler. 



Ophiolipus granulatus KOEHLEB ('96), p. 315, pi. 6, figs. 28, 29; ('99), p. 31, 

 pi. 7, figs. 55-57. 



Locality. Albatross station 5135; in the vicinity of Jolo: Jolo 

 Light bearing S. 46 W., 22.05 kilometers (11.9 miles) distant (lat. 

 6 11' 50" N., long. 121 08' 20" E.) ; 294 meters (161 fathoms) ; 

 February 7, 1908 ; f ne. co. S. 



A single specimen (Cat. No. 41149, U.S.N.M.). 



Notes. The diameter of the disk is 5 mm. 



This specimen agrees well with the type which I described in 1896, 

 based upon two somewhat larger specimens dredged by the Investi- 

 gator among the Andaman Islands in 205 meters (112 fathoms). 



Opliiolipus granulatus has not otherwise been found. 



OPHIOCERAMIS DECLINANS Koehler. 



Ophioceramis declinans KCEHLEB ( J 04), p. 15, pi. 4, figs. 1-3. H. L. CLARK 

 ('15), p. 337. 



Localities. Albatross station 5213; east of Masbate Island; Des- 

 tacado Island (S.) bearing N. 87 E., 15.75 kilometers (8.5 miles) 

 distant (lat. 12 15' 00" N., long. 123 57' 30" E.) ; 146 meters (80 

 fathoms) ; April 20, 1908; S., M., Sh. 



One specimen (Cat. No. E. 301, U.S.N.M.). 



Albatross station 5214; east of Masbate Island; Palanog Light, 

 Masbate, bearing S. 17 W., 4.82 kilometers (2.6 miles) distant (lat. 

 12 25' 18" N., long. 123 37' 15" E.) ; 399 meters (218 fathoms) ; 

 April 21, 1908; gn. M. 



One specimen in poor condition (Cat. No. E. 298, U.S.N.M.). 



Albatross station 5519; northern Mindanao and vicinity; Point 

 Tagolo Light bearing S. 71 W., 16.12 kilometers (8.7 miles) distant 

 (lat. 8 47' 00" N., long. 123 31' 15" E.) ; 333 meters, (182 fathoms) ; 

 August 9, 1909; Glob., S. 



One specimen (Cat. No. E. 300, U.S.N.M.). 



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

 meters (12.7 miles) distant (lat. 8 49' 38" N., long. 123 34' 30" E.) ; 

 401 meters (219 fathoms) ; August 20, 1909; fne. S., brk. Sh. 



One specimen (Cat. No. E. 299, U.S.N.M.). 



