REPORT ON THE ASTEROIDEA. 



413 



1. Narcloa tubcrculata, Gray. 



Nardoa tuberculata, Gray, 1840, Ann. and Mag. Nat. Hist., vol. vi. p. 287. 



Ophidiaster tubercidatus, Miiller and Troschel, 1842, System der Asteridon, p. 32. 



Scytaster tubercidatus, Lutken, 1865, Videnskab. Medd. naturh. Foren. i Kj0bcnhavn, 1864, 



p. 163. 

 Linckia tuberculata, v. Martens, 1866, Archiv f. Naturgesch., Jalirg. xxxiL Bd. i. p. 61. 



Localities. — Samboangan, Philippine group. Depth 10 fathoms. 

 Zebu, Philippine Islands. On the reefs. 



Genus Narcissia, Gray. 



Narcissia, Gray, Ann. and Mag. Nat. Hist., 1840, vol. vi. p. 287. 



Scytaster (pars), Dujardin and Hupe, Hist. Nat. Zooph. Echin. (Suites a Buffon), 1862, p. 368. 



Although the differences presented by this form from the typical species of Nardoa are 

 comparatively slight, their character and constancy appear to me sufficient to warrant the 

 recognition of the genus as established by Gray. 



An interesting additional species was obtained by the Challenger off the coast of Brazil. 



Chorology of the Genus Narcissia. 

 a. Geographical distribution : — 



Atlantic : Two species between the parallels of 40° N. and 20° S. 



Narcissia canariensis, off the Canary Islauds and Cape Verde 

 Islands. Narcissia trigonaria, off Bahia, Brazil. 



|8. Bathymetrical range : Not recorded. 



y. Nature of the Sea-bottom : Not recorded. 



Chorological Synopsis of the Species. 



1. Narcissia canariensis, d'Orbigny, sp. 



Asterias canariensis, d'Orbigny, 1839, in Webb and Berthelot, Hist. Nat. lies Canaries, t. ii., 2e partie, 



Zoologie, p. 148 ; Echin., pi. i. figs. 8-15. 

 Narcissia Teneriffse, Gray, 1840, Ann. and Mag. Nat. Hist., vol. vi. p. 287. 

 Scytaster canariensis, Dujardin and Hupe, 1862, Hist. Nat. Zooph. Echin. (Suites a Buffon), p. 368. 



Locality. — St Vincent, Cape Verde Islands. Depth and conditions not recorded. 

 Remarks. — On the marginal plates of the example which I have referred to this 



