506 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



joints, the first over twice as broad as long, the second about as long 

 as broad, the third longer than broad, the remainder about half 

 again as long as broad. The distal ends of the joints are slightly 

 everted and finelj^ spinous ; the dorsal surface is beset Avith fine spines, 

 and the last four joints bear long recurved spines. 



Type.— Cut. Xo. 25459, U.S.N.M., from Albatross station 2146; 

 off Colon ; 34 fathoms. 



9.. Genus COMATELLA A. H. Clark. 



1871. Actinometra (part) Lutken, INIiis. Godeffr. Cat., V, p. 190. 

 1908. Comastcr (part) A. H. Clark, Proc. IT. S. Nat. Mus., XXXIII, p. 6S5. 

 1908. Phanogenia (part) A. H. Clark, Proc. U. S. Nat. Mus., XXXV, p. 124. 

 1908. ComairUit A. H. Clark, Siniths. Miscell. Coll. (Quarterly Issue), 

 LI I, p. 207. 



Genotype. — Actinometra nigra P. H. Carpenter, 1888. 



Distribution. — Ceylon to Fiji, Tonga, Samoa, and Japan; West 

 Indies, St. Paul's Rocks, Atlantic coasts of southern Europe and 

 northwestern Africa. 



Deptli. — In the Indian and Pacific oceans, littoral, and down to 

 140 fathoms; in the Atlantic 73-830 fathoms. 



lO. Genus COMASTER L. Agassiz. 



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



II, p. 530. 

 1836. Comastcr L. Aoassiz, Mem. Soc. de Sci. uat. de Neuchatel. I, p. 193. 

 1841. Alecto (part) J. MUllkr, Arcliiv fiir Naturgesch., 1841, T. p. 147. 

 1849. Comdtnla (part) J. INII'ller, Abbaiull. d. k. preuss. Akad., 1847. p. 



262. 

 1866. Phanogenia Lovkn, (hvcrsiglit k. Vetensk.-Akad. Forbandl., 1800, No, 



9, p. 231. 

 1879. AeUnonivira (part) P. H. Carpenter, Proc. Roy. Soc, XXA'IIT. p. .386. 



Genotype. — Comatnla miiltiradiata Ijamarck, 1810 (not Asteiias 

 iiiAiltiradiata Linnanis) =.4Ze'r'^r? in^dtifAa J. Miiller, 1841." 



Distribution. — Northern Australia to Luzon and the Mergui Archi- 

 pelago. 



Depth. — Littoral and sublittoral. 



11. Genus COMANTHUS A. H. Clark. 



1816. Comatiila (part) LAitARCK, Hist. nat. des animaux sans vertebres, II, 



p. 530. 

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



140. 

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

 1841. Alecto (part) J. MiJLLER, Archiv fiir Naturgesch., 1841, I, p. 144. 

 1849. Comatula {Actinometra) (part) J. Muller, Abhandl. d. k. preuss. 



Akad., 1847. p. 256. 



o Of. Proc. Biol. Soc. Washington, XXII, p. 87. 



