A MONOGRAPH OP THE EXISTING CRINOIDS 591 



One of the specimens frona False Bay has 21 arms. There are present 9 IIBr 

 4 (3 + 4) series and 2 IIIBr 2 series, 1 external and 1 internal. The cirri are XXV, 

 15-17; the sixth is a transition segment. 



A smaller specimen has 19 arms and the cirri XIV, 13-14. 



Of the other 8 specimens, 1 has 13 arms, 1 has 15, 3 have 16, 2 have 17, and 1 

 has 19. 



These 8 specimens from False Bay are all more or less inmiature. The contro- 

 dorsal is broad, flat and cii'cular, just as in C. trichoptera. The cirri are VI-XII, 

 15-16, usualljr about 7 mm. long. The sixth is a transition segment. The arms are 

 from 30 to 35 mm. in length, and the brachials overlap conspicuously. 



Of the specimens froni the Cape of Good Hope in the British Museum, 3 have 

 20 and 1 has 21 arms. In the last the arms are 60 mm. long. The cirri are XII, 

 15-16, 10 mm. long. The fifth, sixth, or seventh (usually the sixth) is a transition 

 segment. The centrodorsal is thin discoidal, with the broad flat dorsal pole 4 mm. 

 in diameter. 



Attached to the cirri of 1 of the 20-armed specimens are the 13 pentacrinoids 

 noticed in volume 1, part 2, page 514. 



Hartlaub recorded 3 specimens from the Cape of Good Hope which had been 

 sent to him by the Museum of Comparative Zoology. They had 20, 17, and 14 

 arms. In the last, 2 of the rays are without IIBr series. The IIBr series are all 

 4 (3 + 4). There are no IIIBr series. The brachials have only very slightly produced 

 and overlapping distal edges. 



The Challenger specimen from Simons Bay has 20 arms. It resembles others in 

 the British Museum from the Cape of Good Hope and from False Bay. 



Of the 2 Gauss specimens from Simons Bay the larger has 15 arms 40 mm. long, 

 each ray bearing a single IIBr 4 (3 + 4) series. The cirri are XVI, 12-13, 6 mm. long. 



The smaller specimen has 14 arms. There is a single IIBr series on each of 4 

 rays, of which 3 are 4 (3+4) and 1 is 2. 



The specimen without locality in the British Museum has 20 arms. 



Localities.— Ot( the Tugela River mouth, north of Durban, Natal; Tugela River 

 mouth beaiing NW. by W., 3.5 miles distant; 25 meters; bottom, rocks [Bell, 1905; 

 A. H. Clark, 1911]. 



Durban (Port Natal), Natal; Wahlberg [J. Muller, 1843, 1849; Dujardin and 

 Hup6, 1862; von Martens, 1869; P. H. Carpenter, 1879, 1883, 1888; BeU, 1882; 

 A. H. Clark, 1911, 1912, 1915, 1918]. (2, U.S.N.M., 35111 ;Berl. M., 1060). PI. 65, 

 iig. 183. 



Off Algoa Bay, close to Riy Bank, near Port Elizabeth (hit. 33° 58' S., long. 25° 

 51' 30" E.); 46 meters; bottom dark sand, black specks, and rocky; also given as 

 station 508A [Bell, 1905; A. H. Clark, 1911, 1913] (20, B. M.). 



False Bay, Cape of Good Hope; 31 meters [Bell, 1905; A. H. Clark, 1911, 1913] 

 (10, B. M.). 



Cape of Good Hope; M. Reynaud, 1829 [Dujardin and Hup6, 1862; P. H. Car- 

 penter, 1888; A. H. Clark, 1911] (2, P. M.). 



Cape of Good Hope [A. H. Clark, 1913] (7, B. M.). 



Cape of Good Hope; U. S. Exploring Expedition [Hartlaub, 1912]. 



