Boone, Echinodermata, Cruises of "Eagle" and "Ara," 1921-28 69 



Discussion: This specimen establishes the second time this species 

 has been taken by an expedition other than the cruises of the 

 "Blalte." The other record was that of two specimens secured off 

 Habana, Cuba, by the University of Iowa's Bahaman Expedition 

 in 1893. The present specimen has two specimens of a Lepadid barna- 

 cle attached near the cirri. Clark states that these barnacles are of 

 rare occurrence on cirri of Comatulids but that they are not infre- 

 quent on Stylometra. 



Von Graff has recorded it as the host of Myzostomum oolongum 

 von Graff, a free-living species and M. in flat a von Graff in indepen- 

 dent cysts. 



Neocomatella pulchella Pourtales is the only Comatulid in the 

 western Atlantic with more than ten arms, all the division series of 

 two ossicles, the dental edges of the brachia are not produced and 

 everted, and there is a conspicuous comb on the outer portion of the 

 proximal pinnules. 



Neocomatella pulchella is set apart from N. europaea by its more 

 robust cirri, which consist of more numerous segments, the longest 

 of which are only about twice or slightly more than twice as long as 

 wide. N. pulchella is also much larger than N. europaea. In JV. pul- 

 chella the cirri are 15 to 30, but seldom more than 20, frequently 

 18 to 19; the arms are 11 to 22, usually about 15 in number, from 

 100 to 120 mm. in length. 

 References: Antedon pulchella Pourtales, Bull. Mus. Comp. Zool., 



vol. 5, no. 9, p. 216, 1878. 

 Neocomatella pulchella A. H. Clark, Univ. of Iowa Studies in Nat. 

 Hist., vol. 9, no. 5, pp. 9-11, 1921; Bull. 82, U. S. Nat. Mus., 

 pt. 3, p. 124, pi. 5, figs. 10-12, pi. 6, figs. 13-16, pi. 7, fig. 21, 

 pi. 23, fig. 64, 1931, (with full synonymy and description). 



MACROPHREATA. 



Family: ANTEDONIDAE. 



Subfamily : Antedoninae. 



Genus : ANTEDON de Freminville. 



Antedon adriatica A. H. Clark. 



Plate 26. 



Type: Dr. Clark's type came from Trieste and is deposited in the 

 United States National Museum, Cat. no. 24,313; cotypes are in the 

 Copenhagen Museum, the Berlin Zoological Museum and the Museum 

 of Comparative Zoology, Cambridge, Mass. 



