506 



BULLETIN 82, UNITED STATES NATIONAL MUSEUM VOLUME 1 



FIGURE 25. Adelomclra angustiradia (P. H. Carpenter), holotvpe: a, 

 Centrodorsal in interradial view; b, in radial view; c, two radials and 

 proximal parts of the postradial series; d, longest cirrus segments; 

 t, distal part of cirrus. 



cirrus segments of which the outer are short with dorsal spines, and the long segmented 

 pinnules which become very slender and filiform distally, are features duplicated else- 

 where only in such genera as Zenometra, Sarametra and Poliometra, and it is near these 

 that this species undoubtedly belongs. 



Although no other species in the Zenometrinae has ever been found with more 

 than 10 arms, in the Perometrinae all the four known examples of Perometra a/ra have 

 1 1 or more arms. 



Locality. Challenger station 192; near the Kei Islands (lat. 549'15" S., long. 

 13214'15" E.); 256 meters; blue mud; September 26, 1874 [P. H. Carpenter, 1888; 

 A. H. Clark, 1913; Gislen, 1928] (1, B.M.). 



Genus SARAMETRA A. H. Clark 



Zenometra (part) A. H. CLARK, Proc. U.S. Nat. Mus., vol. 34, 1908, p. 213. 



Sarametra A. H. CLARK, Journ. Washington Acad. Sci., vol. 7, 1917, No. 5, p. 127 (referred to the 



Zenometrinae), p. 129 (diagnosis; type species Zenometra triserialis A. H. Clark, 1908; range); 



No. 16, p. 510 (in key; range); Unstalked crinoids of the Siboga-Exped., 1918, p. 223 (in key; 



range), p. 231; Journ. Linn. Soc. (Zool.), vol. 36, 1929, p. 661. GISLN, Lunds Univ. Arsskr., 



new ser., Avd. 2, vol. 40, No. 8, 1944, p. 54. 



Diagnosis. A genus of Zenometrinae in which the centrodorsal is elongate conical 

 with the surface divided into 5 radial areas by 5 bare interradial lines not raised above 



