OPHIURANS OF THE PHILIPPINE AND ADJACENT WATERS. 125 



0° 37' 00" N., long. 127° 15' 00" E.) ; 763 meters (417 fathoms) ; 

 November 27, 1909 ; gy. M. 



Two specimens (Cat. No. 41239, U.S.N.M.). 



Albatross station 5630; south of Patiente Strait; Doworra Island 

 (N.) bearing N. 3° W., 8.34 kilometers (4.5 miles) distant (lat. 0° 

 56' 30" S., long. 128° 05' 00" E.) ; 1,041 meters (569 fathoms) ; De- 

 cember 2, 1909; co. i&, M. 



One specimen (Cat. No. 41244, U.S.N.M.). 



Albatross station 5647; Buton Strait; North Island (S.) bearing 

 S. 87° E., 21.50 kilometers (11.6 miles) distant (lat. 5° 34' 00" S., 

 long. 122° 18' 15" E.) ; 949 meters (519 fathoms) ; December 16, 

 1909 ; gn. M. 



One specimen (Cat. No. 41246, U.S.N.M.). 



Albatross station 5648; Buton Strait; North Island (S.) bearing 

 N. 87° E., 18.90 kilometers (10.2 miles) distant (lat. 5° 35' 00" S., 

 long. 122° 20' 00" E.) ; 1,022 meters (559 fathoms) ; December 16. 

 109 ; gn. M. 



Two specimens (Cat. Nos. 41242, 41243, U.S.N.M.). 



Albatross station 5652; Gulf of Boni, Celebes; Lamulu bearing 

 S. 36° E., 13.90 kilometers (7.5 miles) distant (lat. 4° 35' 00" S., 

 long. 121° 23' 06" E.) ; 960 meters (525 fathoms) ; December 17, 

 1909 ; gn. M. 



One specimen (Cat. No. 41240, U.S.N.M.). 



Albatross station 5657; Gulf of Boni, Celebes; Olang Point bear- 

 ing N. 61° W., 28.72 kilometers (15.5 miles) distant (lat. 3° 19' 40" 

 S., long. 120° 36' 30" E.) ; 900 meters (492 fathoms) ; December 19, 

 1909 ; gy. M. 



Nine specimens (Cat. Nos. 41245, 41241, U.S.N.M.). 



Notes. — The specimens are absolutely identical with those from the 

 Siboga expedition on which I established the species. 



In the synonymy above I have united Ophiacantha oedidisca H. L. 

 Clark with O. relictus. I can not see any character permitting the 

 differentiation of O. relictus, which I described in 1904 from speci- 

 mens collected by the Siboga among the Sunda Islands, from O. 

 oedidisca, which H. L. Clark based on Japanese specimens. In com- 

 paring this last species with O. normani and O. relictus the American 

 naturalist says that his species differs from both in its general ap- 

 pearance, due to the thickness of the disk and the narrow arms pro- 

 vided with spines. But in describing O. relictus and in comparing it 

 with O. normani I had already mentioned that the disk of O. relictus 

 was convex and that the arms, more or less rolled up, appeared 

 more flexible and less rigid than in O. normani, and that, further- 

 more, the under arm plates were widely separated from the base of 

 the arms outward. I stated also that the arm spines, six in number, 



