NEW UNSTALKBD CRINOIDS CLARK 247 



P2 is about two-thirds as long as Pi and is much stouter basally, 

 though becoming very slender in the distal half. It is composed of 

 11 to 12 segments of which the first is short, the second is longer than 

 broad, and the third and following are much elongated with expanded 

 and spinous distal ends. There is a long ovate gonad on the third- 

 fourth or tliird-fifth segments. The following pinnules are similar. 

 The lower and middle pinnules have the distal ends of the segments 

 strongly produced and armed with prominent spines. The distal 

 pinnules are very slender. 



Type.' — From the University of Iowa's Barbados-Antigua Expedi- 

 tion station 15; Barbados. U.S.N.M. no. E. 4289. 



Range: — West Indian Islands, from Cuba to Grenada; from 

 shallow water to 532 meters. 



Remarks. — This new species, which heretofore has been confused 

 by the author and others with the very different Coccometra hagenii, 

 appears to be most closely related to Compsometra parviflora of the 

 East Indies. 



ANNAMETRA, new genus 



Annametra A. H. Clark, U. S. Nat. Mus. Bull. 82, vol. 1, pt. 2, pp. 618, 647, 648, 

 681, 723, 1921; The Danish Ingolf-Exped., vol. 4, no- 5, Crinoidea, p. 41 

 (range), p. 52 (in key), 1923. 



Diagnosis. — A genus of Antedoninae in which P3 is of the same 

 length and character as the succeeding pinnules; Pj and P2 have 18 

 to 32 segments; Pi is shorter than P2 though similar to it; and the 

 cirri are short and stout, strongly recurved distally, resembling the 

 cirri of Antedon petasus, with 10 to 16 segments. 



Genotype. — Cominia occidentalis A. H. Clark, 1915. 



Range. — Cape of Good Hope; southern Japan; 0-47 meters. 



Included species. — Annametra occidentalis (A. H. Clark); A. minuta 

 (A. H. Clark). 



CARYOMETRA, new genus 



Diagnosis. — A genus of Zenometrinae in which the centrodorsal is 

 elongate conical with its sides not divided into radial areas, bearing 

 beneath each radial three columns of cirrus sockets of which the 

 median ends at about the middle of the centrodorsal ; the cirri are long 

 but delicate with rather numerous (30-35) segments of which the 

 longest proximal are two to three times as long as broad and the fifteenth 

 and following are about as broad as long, or broader than long, with 

 small terminal dorsal spines; the elements of the IBr series and the 

 lower brachials are not in lateral contact, and their edges are smooth; 

 and all the pinnules are present. 



Genotype. — Adelometra tenuipes A. H. Clark, 1908. 



Range. — Off Habana, Cuba; 386 meters. 



Included species. — Caryometra tenuipes (A. H. Clark). 



