170 THE VOYAGE OF H.M.S. CHALLENGER. 



1844. Alecto Sarsii, Diiben and Koren, K. Svensk. Vetensk. Akad. Hand!., 1844 [1846], 



p. 231, t. vi. fig. 2. 

 1819. Comatula (Alecto) Sarsii, Mull., Abhandl. d. k. Akad. d. Wiss. Berlin [1847], 1849, p. 254. 

 1857. Alecto Sarsii, Liitken, Vid. Meddel. nat. Foren Kjobenhavn, 1857, p. 107. 



1860. Comatula Sarsii, Alder, Ann. and Mag. Nat. Hist., 1860, ser. 3, vol. v. p. 74. 



1861. Alecto Sarsii, Sars, Oversigt af Norges Eehinodermer, Christiania, 1861, p. 1. 



1862. Comatula Sarsii, Dujardin and Hupe, Hist. Nat. des Zoophytes, Echinodermes, Paris, 



1862, p. 199. 



1865. Antedon Sarsii, Norman, Ann. and Mag. Nat. Hist., 1865, ser. 3, vol. xv. p. 103. 



1866. Antedon (Alecto) dentata, Verrill, Proc. Boston Soe. Nat. Hist., 1866, vol. x. p. 339. 

 1868. Antedon Sarsii, Sars, Memoires pour servir a, la Connaissance des Crinoides vivants, 



Christiania, 1868, p. 47, tab. v., vi. 

 1872. Antedon sarsii, Wyville Thomson, Proc. Roy. Soc. Edin., 1872, vol. vii. p. 765. 

 1874. Antedon Sarsii, Verrill, Amer. Journ. Sci. and Arts, 1874, vol. vii. p. 500. 

 1S79. Antedon Sarsii, P. H. Carpenter, Trans. Linn. Soc. Lond. (ZooL), 1879, ser. 2, vol. ii. 



p. 29. 

 1880. Comatula Sarsii (?), A. Agassiz, Bull. Mus. Comp. ZooL, 1880, vol. vi., No. 8, p. 150. 

 1880. Antedon Sarsii, Verrill, Amer. Journ. Sci. and Arts, 1880, vol. xx. p. 401. 



1880. Antedon Sarsii, d'Urban, Ann. and Mag. Nat. Hist., 1880, ser. 5, vol. vi. p. 381. 



1881. Antedon Sarsii, P. H. Carpenter, Bull. Mus. Comp. ZooL, 1881, vol. ix., No. 4, p. 5. 



1882. Antedon Sarsii, Verrill, Amer. Journ. Sci. and Arts, 1882, vol. xxiii. p. 135. 

 1882. Antedon dentatum, Verrill, Ibid., p. 222. 



1882. Antedon sarsi, BeU, Proc. ZooL Soc. Lond., 1882, p. 534. 



1883. Antedon dentata, P. H. Carpenter, Proc. ZooL Soc. Lond., 1882 [1883], p. 746. 



1884. Antedon dentata, P. H. Carpenter, Proc. Roy. Soc. Edin., 1884, vol. xii. p. 362. 



1884. Antedon dentata, Verrill, Ann. Rep. Commissioner Fish and Fisheries for 1882, Washing- 

 ton, 1884, p. 661. 

 1886. Antedon dentata, P. H. Carpenter, Bijdragen tot de Dierkunde, 13 Afdeling, vi. p. 9. 



N.B. — Not Antedon Sarsii, von Marenzeller (1877), 

 nor Antedon dentata, Fischer (1886). 



Centro-dorsal hemispherical or conical, bearing a great number of cirri, seventy or 

 eighty in large specimens. They have fifteen to nearly thirty joints, most of which are 

 longer than wide, the lower ones greatly so, and somewhat dice-box-shaped ; the later 

 joints with sharp spines which project forwards over the bases of their successors. 



First radials just visible ; the second short, deeply incised by the rhombic axillaries, 

 which are as wide, or usually wider than long, and extend laterally beyond them. 

 Ten arms ; the first brachials barely meeting above the sharp distal angles of the 

 axillaries, and deeply incised by the quadrate second brachials. From the first to the 

 second syzygy the joints have backward projections on alternate sides, and the next 

 following joints are triangular, as wide or wider than long, gradually becoming obliquely 

 quadrate. Syzygies in the third, eighth, and twelfth brachials, and then at intervals of 

 two joints. 



The first pair of pinnules (on second and third brachials) slender and flagellate, reaching 

 15 mm. or more in length, and consisting of nearly forty joints, most of which are longer 

 than wide. The next pair usually only one-third their length, with about ten joints, 



