OPHIURANS OF THE PHILIPPINE AND ADJACENT WATERS. 299 

 OPHIOMAZA CACAOTICA Lyman. 



See for bibliography : 



Ophiomaza cacaotica KCEHLEB ('05), p. Ill; ('07), p. 339. H. L. CLARK 

 ('15), p. 283. 



Localities. Albatross station 5147; Sulu (Jolo) Archipelago, in 

 the vicinity of Siasi; Sulade Island (E.) bearing N. 3 E., 15.57 

 kilometers (8.4 miles) distant (lat. 5 41' 40" N., long. 120 47' 10" 

 E.) ; 38 meters (21 fathoms) ; February 16, 1908; co. S., Sh. 



Two specimens (Cat. No. E. 160, U.S.N.M.). 



Albatross station 5205; off the east coast of Leyte Island; Cagua- 

 yan Point bearing N. 2 E., 1.30 kilometers (0.7 mile) distant (lat. 

 11 19' 30" N., long. 124 58' 05" E.) ; 15 meters (8 fathoms) ; 

 April 13, 1908. 



One specimen (Cat. No. E. 159, U.S.N.M.). 



Limbones Coves. 



One small specimen (Cat. No. 41156, U.S.N.M.). 



Notes. Ophiomaza cacaotica has been recorded from various 

 localities in the Indo-Pacific region Sea of Japan, Sunda Islands, 

 New Caledonia, east coast of Australia, Mergui Archipelago, Trinco- 

 malee, Zanzibar, etc. ; the Siboga found it in the Sunda Archipelago 

 at depths between 16 and 69 meters (9 to 38 fathoms). 



OPHIOMAZA FUSCA, new species. 



Plate 41, figures 5, 6. 



Locality. Albatross station 5145; in the vicinity of Jolo; Jolo 

 Light bearing S. 16 E., 1.57 kilometers (0.85 mile) distant (lat. 

 6 04' 30" N., long. 120 59' 30" E.) ; 42 meters (23 fathoms) ; Feb- 

 ruary 15, 1908 ; co. S., Sh. 



One specimen (Cat. No. 41167, U.S.N.M.). 



Description. The diameter of the disk is 9.5 mm. ; the arms are 

 rather thick and short, but it is difficult to appreciate their exact 

 length, as they are more or less strongly incurved, and, besides, three 

 of them are incomplete ; but I do not believe that their length could 

 have exceeded 25 mm. 



The individual is not quite normal ; one of the arms, which is very 

 small, is in process of regeneration; furthermore, the arrangement 

 of the upper arm plates of the disk show certain irregularities. 



The disk is almost rectangular, with three sides straight and the 

 fourth convex. The dorsal surface is covered with irregularly polyg- 

 onal plates, which are very unequal and disposed without any order ; 

 the primary plates are quite indistinct. The radial shields are rather 

 large, very much larger than the other plates of the dorsal surface ; 

 they are oval, half again as long as broad, and their length is in gen- 



