A. H. CLARK : THE CRINOIDS OF THE INDIAN OCEAN. 235 



Habitat. — Galapagos Islands. 

 Depth.— 385-555 fathoms. 



PSATHYROMETRA PROFUNDORUM. 



Psathyromeira projundonun 1908. A. H. Clark, Proc. U. S. Nat. Mus., vol. 34, 

 p. 237. 



Habitat. — Queen Charlotte Islands, British Columbia. 

 Depth. — 1588 fathoms. 



PSATHYROMETRA CONGESTA. 



Psathyrometia coiigeski 1908. A. H. Clark, Proc. U. S. Nat. Mus., vol. 34, 

 p. 221. 



Habitat. — Hawaiian Islands. 

 Depth.— 400-500 fathoms. 



PSATHYROMETRA MIRA. 



Psathyrometra mira 1809. A. H. Clark, Proc. U. S. Nat. Mus., vol. 36, p. 648. 

 Description. — Centrodorsal conical, rounded at the apex. 4 mm broad 

 at the base and 4 mm. high, divided into five radial areas by five shallow inter- 



FlG. 43. — Psathyrometra mira. 

 Lateral view of the type. 



radial furrows, each equal in width to nearly or quite the diameter of the ad- 

 jacent cirrus sockets; cirrus sockets closely crowded, regularly arranged in two 

 converging columns in each radial area, with a single socket, the remnant of a 

 third column, between the distal ends of the first sockets of the outer columns, 

 which come together just beneath it. 



Cirri XL, lacking in both specimens. 



Ends of the basal rays visible as small tubercles in tlic angles of the calyx, 



