246 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



The hook which is formed by the first ventral arm spine at a little 

 distance from the disk always remains very stout and large ; it shows 

 three branches of which the last is thick and much developed; the 

 two others are very much less developed (pi. 99, fig. 4e). Duncan 

 says that the tentacle scale is small; this is not quite correct; this 

 scale is rather large, oval in shape, and shows on its distal border 

 sometimes a short conical point broadened at the base, and some- 

 times several smaller points (fig. 4/) . 



The general coloration is always roseate ; sometimes it passes into 

 a reddish yellow. It is not rare to see a white band extending all 

 along the median dorsal line of the arms, bounded on either side by 

 a red or pink band showing a more or less dark purple spot toward 

 the distal border of each upper arm plate. In some specimens from 

 station 5265 the upper arm plates show at intervals a large dark 

 purple spot which occupies the greater part of their surface. 



OPHIOTHRIX LEPIDA Loriol. 



Plate 36, fig. 5 ; plate 100, fig. 3. 



Ophiothrix lepidus LORIOL ('93), p. 45, pi. 25, fig. 1. KCEHLEB ('98), p. 102. 

 Ophiothrix lepida H. L. CLAEK ('15), p. 281. 



Localities. Albatross station 5152; Sulu (Jolo) Archipelago, 

 Tawi Tawi Group; Pajumajan Islands (W.) bearing S. 2 W., 3.71 

 kilometers (2 miles) distant (lat. 5 22' 55" N., long. 120 15' 45" 

 E.) ; 62 meters (34 fathoms) ; February 18, 1908 ; wh. S. 



Two specimens (Cat. No. E. 6, U.S.N.M.). 



Albatross station 5153; Sulu Archipelago, Tawi Tawi Group; 

 Tocanhi Point bearing S. 27 E., 3.89 kilometers (2.1 miles) distant 

 (lat. 5 18' 10" N., long. 120 02' 55" E.) ; 90 meters (49 fathoms) ; 

 February 19, 1908; co. S., Sh. 



One specimen (Cat. No. E. 7, U.S.N.M.). 



Albatross station 5640; Molucca Sea; Labuan Blanda Island bear- 

 ing N. 88 E., 1.61 kilometers (1 mile) distant (lat. 4 27' 00" S., 

 long. 122 55' 40" E.) ; 44 meters (24 fathoms) ; December 13, 1909. 



One specimen (Cat. No. E. 5, U.S.N.M.) ; S., brk. Sh. 



Notes. The two specimens from station 5152 have a rather pale 

 general coloration; the dorsal surface of the disk is a very light 

 greenish white, with a slight indication of an extremely fine purple 

 line along the inner border of the radial shields in the larger; the 

 arms are roseate, and the spines banded white and pink. A purple 

 line extends all along the median line of the dorsal surface of the 

 arms, but this line is somewhat irregular and is sometimes discon- 

 tinuous. The ventral surface is lighter, and the arms show in the- 

 median line a band interrupted at each segment. 



