24 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 40. 



P D 9.5 mm. long, more slender than P 1? with thirty-two segments, 

 tapering more rapidly from the base and therefore more slender in its 

 outer portion; earlier segments short, becoming about as long as 

 broad on the twelfth and following ; second-fourth segments strongly 

 carinate, the following narrowly carinate to about the middle of the 

 pinnule; P 2 12 mm. long, very slightly stouter basally than P x but 

 tapering much more gradually, so appearing considerably stouter, 

 with twenty-seven segments, which become about as long as broad 

 on the sixth and from one-third to one-half again as long as broad 

 distally ; P 3 similar to P 2 , but very slightly larger and longer ; P 4 8 mm. 

 long, resembling P 2 and P 3 , but tapering more rapidly and therefore 

 more slender in the distal half; P 5 6 mm. long, small and weak, with 

 sixteen segments, all but the outermost broader than long; following 

 pinnules similar, gradually increasing in length and in the length of the 

 component segments, the distal pinnules being exceedingly slender, 8 

 mm. lorig. On the large lower pinnules the second-fifth segments are 

 rather strongly carinate ; this decreases rather rapidly distally, being 

 soon confined to the second-fourth and then to the second-third, dis- 

 appearing at the end of the proximal fourth of the arm. 



The color is brownish white, the cirri being lighter and tinged with 

 purple. 



Locality. — Madagascar; the type, which is No. 5348 Berlin Museum, 

 was collected by Doctor Voeltzkow. 



Genus HETEROMETRA A. H. Clark. 



HETEROMETRA SAVIGNII (J. Miiller). 



Comatula mulliradiata Audouin, in Savigny, Description de l'Egypte, 1817, 

 p. 205, pi. 1, fig. I, 1-6.— Leuckart, Isis, vol. 5, 1839, p. 612. — von Graff, 

 Das Genus Myzostoma, 1877, pp. 2, 22; Challenger Reports, vol. 10, Zool- 

 ogy, 1884, p. 32. 



Comatula, sp. Leuckart, Zeitschr. fur organ. Phyeik, vol. 3, 1833, Heft 4, p. 387. 



Comatula adeonx de Blainville, Manuel d'Actinologie (1834), 1836, pi. 26, figs. 

 1-5 (but not p. 249). 



Alecto savignii J. Muller, Archiv fiir Naturgesehichte, 1841, Heft I, p. 144 (Red 

 Sea). 



Antedon savignyi Ludwig, in Kossman, Reise nach deni Rothen Meer, vol. 5, 

 18S0, p. 4. — P. H. Carpenter, Challenger Reports, vol. 26, Zoology, 1888, pp. 

 55, 252, 253, 255, 263, 366, 380.— Hartlaub, Nova Acta Acad. German., vol. 

 58, 1891, No. 1, pi. 2, fig. 20.— Chadwick, Journ. Linn. Soc. (Zool.), vol. 31, 

 1908, p. 47. 



Heterometra savignii A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 1909, p. 11. 



Localities. — "Red Sea;" Gulf of Suez; Suez Bay; Ul Shubuk; Khor 

 Shinab; Tor; Salaka. 



This species ranges eastward as far as Muscat and Kurrachi. 

 Depth. — Littoral, and down to 12 fathoms. 



