OPHIURANS OF THE PHILIPPINE AND ADJACENT WATERS. 261 



plate ; it is bordered on either side by a very much broader dark green 

 line. It might be said just as well that the median dorsal line of the 

 arms throughout its whole length is occupied by a dark green band 

 with a light line in the middle. The ventral surface of the disk and 

 of the arms shows the same coloration as that of the specimen from 

 station 5432. 



I include two photographs of this latter which will supplement the 

 schematic figures which I published in 1898 (pi. 36, figs. 3, 4). 



Ophiothrix proteus was discovered by the Investigator at Pointe 

 de Galle, Ceylon, in 34 fathoms; the Siboga found the species again 

 in numerous localities among the Sunda Islands from the surface 

 down to 83 meters (46 fathoms) ; the Paris Museum possesses a speci- 

 men from New Caledonia. 



OPHIOTHRIX PURPUREA Martens. 



Plate 58, figs. 3, 4 ; plate 101, fig. 6. 



See for bibliography : 



Ophiothrix purpurea Kcehleb ('05), p. 102; ('07a), p. 336; ('07b), p. 

 253.— H. L. Clark ('15), p. 277. 



Localities — Albatross station 5108; China Sea, off southern Luzon; 

 Corregidor Light bearing N. 39° E., 41.70 kilometers (22.5 miles) 

 distant (lat. 14° 05' 05" N., long. 120° 19' 45" E.) ; 24 meters (13 

 fathoms) ; January 15, 1908; Co. 



One specimen (Cat. No. 41258, U.S.N.M.). 



Albatross station 5179; vicinity of Eomblon; Romblon Light bear- 

 ing S. 56° E., 8.34 kilometers (4.5 miles) distant (lat. 12° 38' 15" N., 

 long. 122° 12' 30" E.) ; 68 meters (37 fathoms); March 25. 1908; 

 hrd. S. 



Four specimens (Cat. No. 41260, U.S.N.M.). 



Albatross station 5257; southern Mindanao, eastern Illana Bay; 

 Utara Point, Bongo Island, bearing N. 88° W., 14.27 kilometers (7.7 

 miles) distant (lat. 7° 22' 12" N., long. 124° 12' 15" E.) ; 51 meters 

 (28 fathoms) ; May 22, 1908 ; M. 



One specimen (Cat. No. 41259, U.S.N.M.). 



Notes. — All the Albatross specimens are of small size; in the larg- 

 est, which is that from station 5179, the diameter of the disk is 

 only 5 mm. 



I include photographs of a specimen from the Sunda Islands from 

 my own collection, which will show the form of the radial shields and 

 of the upper arm plates, the outlines of which do not appear clearly 

 in the photographs which Doderlein published in 1899 ('99, pi. 17, 

 fig. 23) ; these photographs will permit the easy appreciation of the 

 differences which separate O. purpurea from O. lepida. 



