OPHIUEANS OF THE PHILIPPINE AND ADJACENT WATERS. 377 



ever, O. flagellata has been collected in the Philippines and at dif- 

 ferent stations in the Sunda Archipelago. 



Ophiura flagellata has a much wider distribution than was sup- 

 posed in 1907, for the Albatross has found it as far as the Bering 

 Sea and the Aleutian Islands to the north and in the Pacific off the 

 coast of Mexico. 



The principal localities at which 0. flagellata has been taken, with 

 the depths, are the following: 



Challenger Lyman ('82, p. 52) 35° N. latitude, 139° E. longitude (Japan) ; 

 622 meters (340 fathoms). 



Investigator Kcehler ('99, p. 19) Andaman Islands; 990 to 1,000 meters 

 (490 to 495 fathoms). 



Albatross Liitken and Mortensen ('99, p. 114) 22°-24° N. latitude, 107-108° 

 W. longitude (off the coast of Mexico) ; 1,6S1 to 1,S20 meters (919 to 995 

 fathoms). 



Siboga Kcehler ('04, p. 56) 2° N.-7° S. latitude, 117°-131° E. longitude 

 (Sunda Islands); 96 to 1,264 meters (63 to 831 fathoms). 



Travailleur and Talisman Kcehler ('07, p. 261) 19°-29° N. latitude, 14°-20° 

 W. longitude (off the coast of the Sahara) ; 932 to 2,330 meters (613 

 to 1,533 fathoms). 



Albatross H. L. Clark ('11, p. 61) 35°-54° N. latitude, 129°-170° E. longi- 

 tude (Bering Sea, Aleutian Islands. Japan, etc.) ; 128 to 1,602 meters 

 (70 to S76 fathoms). 



Albatross Kcehler ('17) 4° N.-5° S. latitude, 118°-122° E. longitude (Philip- 

 pines and Sunda Islands) ; 949 to 1,280 meters (519 to 700 fathoms). 



We thus see that O. -flagellata has been found at a rather large 

 number of stations in our three great oceans — Pacific, Indian, and 

 Atlantic — at depths varying from 96 to 2.330 meters (52.5 to 1,275 

 fathoms) . 



OPHIURA FLUCTUANS, new species. 



Plate 85, figs. 2-5. 



Locality. — 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. 



Two specimens (Cat. No. 41356, U.S.N.M.). 



Description. — In one of the specimens the diameter of the disk is 

 19 mm.; the arm which is best preserved reaches a length of 80 mm.. 

 and it must have had a total length of about 100 mm. In the other 

 specimen the diameter of the disk, which is slightly oval, measures 

 from 14 mm. to 15 mm. ; thcarms are broken off at a little distance from 

 the base. The width of the arms at their base is 4.5 mm. in the first 

 specimen, 3.5 mm. in the second. The relation between the diameter 

 of the disk and the width of the arms is therefore 1 : 4.2 in the first and 

 1 :4.28 in the second. 



