no. 1808. RECENT AFRICAN GRIN OIDS— CLARK. 27 



Antedon imparipinna P. H. Carpenter, Journ. Linn. Soc. (Zool.), vol. 16, 1882, 

 p. 502. — Chadwick, Journ. Linn. Soc. (Zool.), vol. 31, 1908, p. 46. 



Dichrometra protectus A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 1909, 

 p. 13; Vid. Medd. fra den naturhist. Forening i Kpbenhavn, 1909, p. 172. 



Localities. — Suez Bay ; Suakim Harbor. 



This species ranges eastward to Hongkong, the Philippines, Fiji, 

 and Tonga. 



DICHROMETRA PALMATA (J. Miiller). 

 ? 'Caput- Medusae cinereum Linck, De stellis marinis, 1733, p. 57, pi. 21, No. 33. 



Comntula leucomelas (Riippel MS.) Leuckart, Zeitschr. fiir organ. Physik, vol. 3, 



1833, Heft 4, pp. 387, 390 (nomen nudum). 

 Alecto palmata J. Muller, Archiv fiir Naturgesch., 1841, Heft 1, p. 144. 

 Comatula scita Paris Museum MS. — Dtjjardin and Hupe, Hist. nat. des 



zoophytes; echinodermes, 1862, p. 208. 

 Comatula palmata von Martens, in von der Decken's Reise in Ost-Africa, vol. 3, 



1869, p. 129. 

 Antedon palmata Bell, Proc. Zool. Soc. London, 1882, pp. 533, 534. — Hartlaub, 



Nova Acta Acad. German., vol. 58, 1891, No. 1, p. 49. — Chadwick, Journ. 



Linn. Soc. (Zool.), vol. 31, 1908, p. 47. 

 Antedon leucomelas (Riippel MS.) Hartlaub, Nova Acta Acad. German., vol. 58, 



1891, No. 1, p. 51. 

 Dichrometra palmata A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 1909, 



p. 13. 



Localities. — "Red Sea;" coral reef of Misharif Island, Khor Don- 

 gola; between tide marks at Suez. 



This species ranges eastward to the Tonga Islands. 

 Depth. — Littoral. 



DICHROMETRA (? species). 



Locality. — Cape St. Andre, Madagascar; Zanzibar. 



Depth. — About 30 meters. 



Remarks. — In the Paris Museum there are two young examples of 

 some species of Dichrometra from Madagascar. One specimen has 

 exactly twenty arms, one IIIBr series being present and one IIBr 

 series absent; the other also has about twenty arms. The species 

 represented is related to D. palmata, though apparently different. 

 There is a similar specimen in the British Museum from Zanzibar. 



DICHROMETRA (? species). 



Locality. — Zanzibar. 



Remarks. — The British Museum contains a young specimen of 

 some species of Dichrometra, near D. flagellata, from Zanzibar. 



DICHROMETRA KLUNZINGERI (Hartlaub). 



Antedon klunzingeri Hartlaub, Nachr. Ges. Gottingen, Mai 1890, p. 175; Nova 

 Acta Acad. German., vol. 58, 1891, No. 1, p. 46, pi. 2, figs. 22, 25. 



Dichrometra Munzingeri A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 1909, 

 p. 13. 



Locality. — Koseir; Ras-el-Millan, Red Sea. 

 Depth . — Li ttor al . 



