No. 1085. /?firA9/0.V OF CRIXOID FAMILY COM A>iTERTD.F— CLARK. 503 



similar, 8 mm. to 10 mm. long; P^'G mm. long; P5 and following 

 pinnules G mm. long Avithont combs, compostnl of sixteen joints, the 

 first three not so long as broad, the remainder about as loiig as broad; 

 distallj^ the pinnules gradually increase in length and become more 

 slender, being distally 8 nnn. long with twenty-three to twenty-five 

 joints, the first two short, the third and following longer than broad, 

 becoming about twice as long as broad in the outer portion. The 

 lower pinnules have the corners of the joints considerably cut away 

 as in Ileliomctva; the joints of the middle and distal pinnules are 

 slightly " dice-box shaped " with a finely spinous surface, and with 

 the distal ends produced ventrally into two long, sharp spines, one 

 on each side of the perisome: this modification of the joints in the 

 more proximal of the middle pinnules affects only the di.stal portion, 

 but later encroaches more and more upon the proximal part of the 

 pinmdes, soon involving almost all of the joints. 



Color (in spirits). — Bright yellow, the skeleton lighter. 



Tifpe.— Cat. Xo. 25513, U.S.N.M., from Albatross station 5153; east 

 of Port Dos Amigos, Tawi Tawi ; 49 fathoms. 



7. Genus CAPILLASTER A. H. Clark. 



1758. Asterias (part) Llnn.eus, Syst. Nat., 10th ert., II, p. 663. 



1772. Asteria (part) BrDnnich, Zoologia fundainenta, p. 230 (emendation). 



1816. Covuttiihi (part) Lamarck, Hist. nat. des animaux sans vertebres, 



II, p. 530. 

 1836. Comastcr (part) I^. Agassiz, Mem. Soc. de sci. nat. de Neucliatel, I, p. 



193. 

 1841. Actinometra (part) J. Muller, Archiv fiir Naturgesch., 1841, I, p. 140. 

 1849. Comatvla (Aciiiioi)ietra) (part) J. Muller, Abliandl. d. li. preuss. 



Akad., 1847, p. 246. 

 1849. Comatula (Alecto) (part) J. Muller, Abbandl. d. k. preuss. Alcad., 



1847, p. 258. 

 1909. Caijma.stcr A. H. Clark. Proe. Biol. Roe. AVashington, XXII, p. 87. 



Genotype. — Aethiometra sentosa P. H. Carpenter, 1888. 

 Disti-ihution. — Madagascar to northern Australia, the Philippines, 

 and Japan. 



Depth. — Littoral and sub-littoral; rarely down to 1()0 fathoms. 



8. NEMASTER, new genus. 



1879. Antcflon (part) Rathbun, Trans. Conn. Acad. Sci., V, p. 157. 



1880. ActiiKiinctra (part) I'. H. Carpenter, .Tonrn. Linn. Soc. (Zool.), XV, 

 p. 213. 



1908. Comaster (part) A. II. Clark, Proc. U. S. Nat. Mns., XXXIII, p. 685. 



Genotype. — Nemaster grandis., new species. 



Distrihution. — Caribbean Sea and Atlantic coast of South America 

 south to Bahia. 



