A MONOGRAPH OF THE EXISTING CRINOIDS 433 



those following gradually increase in length so that the distal are three times as long 

 as broad. P 2 is stout and very stiff, 13.5 mm. long, with 14 segments, of which the 

 first is twice as broad as long, the third is somewhat longer than broad, the fourth 

 is half again as long as broad, the fifth is twice as long as broad, and the remainder 

 are nearly three times as long as broad. P 3 is 9 mm. long with 10 segments and is 

 similar to P 2 , but the segments are relatively more elongated. P 4 is small, slender, 

 and weak, 4.5 mm. long, with 11 segments. 



The other specimen without locality (Berl. M., 5288) has 28 arms about 100 mm. 

 long. The centrodorsal is low hemispherical, about 5 mm. in diameter at the base, 

 with the approximately flat dorsal pole 1.5 mm. in diameter and studded with small 

 deep pits representing obsolete cirrus sockets. The cirri are XXVII, 21-22, from 20 

 to 25 mm. long, and are arranged on the centrodorsal in two and a partial third closely 

 crowded alternating marginal rows. The longer proximal cirrus segments are half 

 again as long as their proximal width and have a shghtly concave ventral profile so 

 that their ends are prominent. The outermost 10 segments are about as long as broad, 

 and the distal, especially the last three or four, are rather strongly carinate dorsally. 

 The opposing spine is prominent and subterminal. The terminal claw is stout, rather 

 short, and strongly curved. All but one of the postradial series bear external IIIBr 

 series. The exception is a postradial series with the IIBr and IIIBr series missing on 

 one side. P! is slender and flagellate, 7 mm. long, with about 17 segments. P 2 is stiff 

 and spinelike, 12 mm. long, with 11 segments. P 3 is 10.5 to 11 mm. long, with 10 

 segments, very shghtly slenderer than P 2 . P 4 is 7.5 to 8 mm. long, with 9 or 1 segments, 

 much smaller than P 3 though more or less like it distally. P 5 is 4.5 to 5 mm. long, 

 with 10 segments, and is slender and weak. The following pinnules are short and 

 soft with short segments. 



Localities. — Macclesfield Bank; 36-64 meters [Bell, 1894; A. H. Clark, 1912, 

 1913] (1, B.M.). 



Nha'trang, Annam; littoral; Dr. C. Dawydoff [Gislen, 1936]. 



Bantayan reef, Cebu, Philippines; Lawrence E. Griffin (2 + , M.C.Z., 387, 396 

 [original Nos. 68, 99]). 



Siboga station 99; anchorage off North Ubian (lat. 6°07'30" N., long. 120°26'00" 

 E.); 16-23 meters; lithothamnion bottom; June 28-30, 1899 [A. H. Clark, 1918] (1, 

 Amsterdam Mus.). 



Pelew Islands [A. H. Clark, 1912] (1, H.M.). 



Ruk, Caroline Islands [A. H. Clark, 1912] (1, H.M.). 



New Guinea [A. H. Clark, 1912; Hartmeyer, 1916] (1, Berl. M., 2971 [5347]). 



Pitilu, Admiralty Islands; Dr. G. Duncker [A. H. Clark, 1912] (1, H. M.). 



Ugi, Solomon Islands [Bell, 1885; A. H. Clark, 1912]. 



Challenger station 174 (B, C, or D); near Kandavu, Fiji (lat. about 19°06' S., 

 long, about 178°18' E.); 411, 1,115, or 383 meters; coral mud; bottom temperuturo, 

 at 1,115 meters, 39° F.; August 3, 1874. The specimen could not have come from 

 any of the depths given, but was probably taken in shore collecting, [von Graff, 

 1887; P. H. Carpenter, 1888, 18S9; Hartlaub, 1891; A. H. Clark, 1907, 1909, 1912, 

 1913] (1, B.M.). 



Lifu, Loyalty Islands [Bell, 1899; A. H. Clark, 1912, 1913] (2, B. M.). 



New Caledonia; M. Francois, 1894 [A. H. Clark, 1911] (1, P. M.). 



