OPHIUROIDEA OF TH£ BAHAMA EXPEDITION. 85 



the second and third forks, become small and granule-like. 

 Groups of small, roundish, white spots, surrounded by a circle 

 of dark brown, occur on the radial areas of the disk. The 

 arms are banded with brown and yellowish white, the latter 

 becoming prominent. 



It is useless to go back to polynomial writers, like Seba, 

 for binomial names, as Lyman did for this species. 



Station 68, off Little Cat I., 3 to 13 fathoms, one example; 

 Tortugas, on anchor, 8 fathoms, one large example; Bahama 

 Bank, one example. 



This species has been taken from off Charleston, 8. C, 

 and the Florida Keys to St. Croix. It usually clings to gor- 

 gonians, having corresponding colors. 



ASTROPIIYTON CECILIA Llltkcil. 



Astrophyton coecilia Lutken, Vid. Meddel., p. 18, Jan., 1855; Add. ad 

 Hist. Oph., It. II, p. 157, pi. V, fig-. 6. Verrill, Notes on Radiata, 

 Trans. Conn. Acad., I, p. 341, 1868. Lyman, Report Voy. Challeng- 

 er, Zool., Ophiuroidea, V, p. 258, 1882; Bull. Mas. Comp. Zool., X, 

 p. 279, 1883; Three Cruises of the Blake, vol. II, p. 110, fig. 388, 

 1888. 



Astrophyton krebsii Lutk., Vid. Meddel., p. 18, 1856; Add. ad Hist. 

 Oph., Pt. II, p. 158, 1859. 



Station 69, off Little Cat I., 3 to 13 fathoms, 1 young. 



Not uncommon in the West Indies, in 50 to 124 fa:homs, 

 adhering to gorgonians. St. Croix, on a gorgonian ( Thesea) : 

 off Barbados, or GorgviieHa', and off Havana, Yale Museum. 



GORGONOCEPHALUS MUCRONATUS jLyilHlll. 



Astrophyton mucronatum Lyman, Bull. Mus. Comp. Zool., I, 10, p. 

 348, 1869. Nutting", Narrative, p. 172. 



Gorgoncephalus mucronatus Lyman, Report Voy. Challenger, Zool., 

 Ophiuroidea, V, p. 265, 1882; Bull. Mus. Comp. Zool., X, p. 279. 



The color, in life, according to Prof. Nutting, is light buffy 

 yellow, with transverse bars of brown on the arms. 



The largest specimen, sent to me. from station 33. is 48 mm. 

 in diameter of disk. The color of each, in alcohol, is pale 



