OPHIUKANS OF THE PHILIPPINE AND ADJACENT WATERS. 387 



arm plate is triangular, elongated, with the distal border slightly 

 convex ; its outline agrees better with the figure which I published in 

 1896 ('96, pi. 5, fig. 11) than with that of Liitken and Mortensen 

 ('99, pi. 2, fig. 10). The second under arm plate is triangular and 

 almost equilateral. The following become very much broadef than 

 long; all have the distal border almost straight, or only slightly 

 convex. 



The Albatross specimen is slightly deformed and it seems to have 

 suffered a flattening on the dorsal surface, which has affected un- 

 equally the different portions of this surface. 



The type, from the Investigator collection, was captured off Co- 

 lombo, Ceylon, at a depth of 1,092 meters (597 fathoms). Liitken 

 and Mortensen 's O. nana came from the Pacific and was dredged off 

 Panama in 1,650 meters (902 fathoms). 



HOMALOPHIURA INORNATA (layman). 



Plate 82, fig. 9. 



Ophioglypha inomata LYMAN ('78), p. 97, pi. 2, figs. 2G. 27; ('82), p. 73, 

 pi. 3, figs. 10-12. KCEHLEB ('07), p. 294; ('07a), p. 262; ('14), p. 18. 



Ophioglypha divisa LUTKEN and MORTENSEN ('99), p. 127, pi. 4, figs. 10-12; 

 It pi. 5, figs. 1, 2. KCEHLER ('04), p. 40. 



Ophiura inomata MATSUMOTO ('15), p. 81. 



Hotnalophiura inornata H, L. CLARK ('15), p. 326. MATSUMOTO ('17), p. 

 266. 



Homalophiura divisa MATSUMOTO ('17), p. 2G7. 



Localities. Albatross station 5444 ; east coast of Luzon, San Ber- 

 nardino Strait to San Miguel Bay; Atalaya Point, Batag Island, 

 bearing S. 65 E., 9.45 kilometers (5.1 miles) distant (lat. 12 43' 51" 

 N., long. 124 58' 50" E.) ; 563 meters (308 fathoms) ; June 3, 1909; 

 gn. M. 



One specimen (Cat. No. 41077, U.S.N.M.). 



Albatross station 5445 ; east coast of Luzon, San Bernardino Strait 

 to San Miguel Bay ; Atalaya Point, Batag Island, bearing S. 56 E., 

 9.82 kilometers (5.3 miles) distant (lat. 12 44' 42" N., long. 124 

 59' 50" E.) ; 701 meters (383 fathoms) ; June 3, 1909; gn. M., S. 



One specimen (Cat. No. 41340, U.S.N.M.). 



Albatross station 5618; Molucca Passage; March Island bearing S. 

 69 E., 14.45 kilometers (7.8 miles) distant (lat. 37' 00" N., long. 

 127 15' 00" E.); 762 meters (417 fathoms); November 27, 1909; 

 gn. M. 



One specimen (Cat. No. 41339, U.S.N.M.). 



Albatross station 5619; Molucca Passage; Mareh Island (S.) bear- 

 ing S. 78 E., 12.97 kilometers (7 miles) distant (lat. 35' 00" N., 

 long. 127 14' 40" E.) ; 796 meters (435 fathoms) ; November 27, 

 1909;fne.gy. S, M. 



One specimen (Cat. No. 41076, U.S.N.M.). 



