26 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40. 



S-ubfamily STEPHANOMETRIN^. 

 Genus STEPHANOMETRA A. H. Clark. 



STEPHANOMETRA MARGINATA (P. H. Carpenter). 



Ante-don marginata P. H. Carpenter, Challenger Reports, vol. 26, Zoology, 1888, 

 p. 230, pi. 40.— Chadwick:, Journ. Linn. Soc. (Zool.), vol. 31, 1908, p. 45. 



Stephanometra marginata A. H. Clark, Vid. Medd. fra den naturhist. Forening i 

 K0benhavn, 1909, p. 169; Amer. Naturalist, vol. 43, p. 255. 



Locality. — Suez Bay. 



This species is otherwise known from Ceylon, Singapore, and the 

 Philippine Islands. 



Depth.— 10 fathoms. Other records of depth range from littoral 

 down to 30 fathoms. 



Remarks. — Mr. Chadwick has expressed some doubt in regard to the 

 correctness of his identification of his two small and imperfect speci- 

 mens from Suez, and I must confess to sharing his doubts. 



STEPHANOMETRA INDICA (Smith). 



Comatula indica Smith, Ann. and Mag. Nat. Hist. (4), vol. 17, 1879, p. 406; Philos. 



Trans. Roy. Soc, vol. 168, p. 564, pi. 51, figs. 3, 36 (but not 3a). 

 Stephanometra indica A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 1909, 



p. 10. 

 Antedon palmata Bell, Trans. Linn. Soc. (Zool.), (2), vol. 13, 1909, pt. 1, p. 20. 



Localities. — Rodriguez; Madagascar; Seychelles; north reef, Far- 

 quhar Atoll. 



This species has also been reported from Ceylon, the Maldive 

 Islands (under the name of Actinometra maculata), and the Bay of 

 Bengal. 



Depth. — Littoral, and down to 34 fathoms. 



Remarks. — A specimen from Madagascar collected by M. Grandidier 

 in 1905 has the cirri XXX, 20-22, smooth, the sixth segment the 

 longest, about half again as long as broad ; the last ten segments are 

 half again as broad as long; the longer segments are slightly con- 

 stricted centrally; there are about twenty-five arms; the IIIBr 

 series are developed in all cases internally instead of externally, as 

 usual in the species; P 2 is long, stiff and spinelike, with about sixteen 

 segments. Stephanometra indica might aptly be described as S. 

 monacantha with P 2 much elongated and more delicate and flagellate 

 distally. 



Subfamily MAEIAMETRIN^. 

 Genus DICHROMETRA A. H. Clark. 



DICHROMETRA PROTECTUS (Ltitken). 



Antedon protectus Lutken, Mus. Godeffroy Cat., vol. 5, 1874, p. 190 (nomen 

 nudum). — Lutken, in P. H. Carpenter, Trans. Linn. Soc. (Zool.), (2) vol. 2, 

 1879, p. 19. 



