40 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 40. 



Comatula mediterranea Lamarck, Hist. nat. dee animaux sans vertebres, vol. 2, 



1816, p. 535. 

 Antedon rosacea (part) P. H. Carpenter, Journ. Linn. Soc.(Zool.), vol. 13, 1877, 



p. 441; Zool. Anzeiger, Jahrg. 4, 1881, p. 521; Challenger Reports, vol. 26, 



Zoology, 1888, pp. 355, 377. 

 Antedon mediterranea A. H. Clark, Vid. Medd. fra den naturhist. Forening i 



K^benhavn, 1909, pp. 120, 128. 



Locality. — Bay of Benzert (Bizerta), Tunis. 



Depth.— 50-100 fathoms. 



Remarks. — It is not absolutely certain that this is the species repre- 

 sented by the specimens dredged by the Porcupine off the coast of 

 Tunis, though it seems most probable that this determination is 

 correct. There is a possibility that A. adriatica, A. bifida, or even an 

 undescribed form may occur in these waters. A. mediterranea is 

 found on the European side of the Mediterranean as far east as the 

 Cyclades, from which islands I have seen a specimen in the Bergen 

 Museum. 



ANTEDON HUPFERI (Hartlaub). 



Antedon rosacea Greeff, Zool. Anzeiger, Jahrg. 5, 1882, pp. 116, 159. 

 Antedon hupferi Hartlaub, Nachr. Ges. Gottingen, Mai, 1890, p. 171; Nova 

 Acta Acad. German., vol. 58, 1891, No. 1, p. 88, pi. 5, figs. 53, 59. 



Locality. — Isla das Rolas (near Sao Thome); Wapoo, Ivory Coast; 

 Goree, Senegal; Canary Islands; Madeira. 

 Depth.— 13-21 fathoms. 



Remarks. — The Challenger specimen of u Antedon dubeniV 1 described 

 and figured by Carpenter is an example of Tropiometra picta. He 

 unhesitatingly identified with "Antedon diibenii" as he understood 

 it the specimens secured at . Rolas by Professor Greeff, and some 

 others from Madeira which he obtained from Professor Loven and 

 from Mr. J. Y. Johnson of Funchal; at the same time he expresses 

 the belief that this species is only a synonym of Antedon bifida. 



In view of all this it is rather uncertain just what the Canary and 

 Madeira specimens can be; they are "unquestionably identical with 

 those from Brazil," but the latter represent two species. Taking 

 everything together, however, it would seem that the species with 

 which he intended to compare these specimens was the one described 

 by Bohlsche, or else he certainly could not have remarked on their 

 similarity to Antedon bifida. 



Genus IRIDOMETRA A. H. Clark. 



IRIDOMETRA MAURITIANA, new species. 



Description. — Centrodorsal low-hemispherical, the slightly con- 

 cave dorsal pole 1 mm. in diameter; cirrus sockets arranged in 

 approximately four closely crowded alternating rows, the most 

 proximal with about four cirrus sockets to each radial area. 



