Oinoidea. 455 



Depth. Littoral, and town to 90 meters. 



Notes. One of the specimens has thirty-six arms about 75 mm long; 

 two of the IIIBr series are 4(3+4) instead of the usual 2; all the mil- 

 series are 4(3 + 4); no IVBr series are developed; the centrodorsal is 

 large and thin, the dorsal pole 3,5 mm in diameter, slightly concave ; the 

 cirri are XVII, 13 14, 8 mm long, arranged in a single slightly defective 

 row ; they are rather slender. This specimen is remarkable for the ex- 

 ceedingly close interior union of the IIIBr series; in the several extreme 

 cases the IIIBr ossicles and the first two brachials are as strongly flattened 

 against each other as in the extreme cases among the Thalassometridae ; 

 the other division series are normal. The colour is uniform purplish black. 



The other specimen is in general similar to the preceding; it has 

 forty-eight arms; all the II Br series are 4(3 + 4); eight of the IIIBr 

 series are 4(3 + 4), the remainder being 2 ; on two of the IIBr series the 

 same crowded conditions are noticeable as in 1 the other specimen ; the 

 centrodorsal is as in the preceding; the cirri are VIII, 13 16, 8 mm long. 

 The colour is blackish brown, the division series and arms with an ir- 

 regular mediodorsal line of light yellow-brown. 



Subgenus Comanthina A. H. Clark. 

 Comanthina Belli (P. H. Carpenter). 



Literature: See "The recent Crinoids of Australia" and "The Crinoids of the Indian 

 Ocean". 



Localities: Port Hedlaud (20 17' S. lat., 118 34' E. long); VII. 

 05 (1 specimen). - Stat. 14, Sharks Bay, Freycinet Reach, west 

 of Middle Flat as far as the northern point of Heirissou 

 Prong; 11 1G meters; bottom at first sandy, later rock with coral; 

 12. IX. (1 specimen). 



Further Distribution. "West Australia"; "Northwestern 

 Australia"; Mermaid; Prince of Wales Channel, near Cape 

 York (10 30' S. lat, 142 18' E. long.); Torres Strait; Thursday 

 Island. 



Depth. Littoral, and down to 117 meters. 



Notes. The specimen from Port Hedland has about one hundred and 

 fifty arms each about 100 mm long; three of the II Br series are 2, and seven 

 are 4 (3 + 4) ; on all three of the II Br 2 series the normal order of the 

 IIIBr series is reversed, these being 4 (3 + 4) externally and 2 internally, 

 as in the genus Himerometra; on one of the other IIBr series there are two 

 III Br 4 (3 + 4) series ; about half a dozen of the outer division series are 4 

 (3 + 4) instead of the usual 2; all the other division series are regular; the 

 centrodorsal is but slightly raised above the dorsal surface of the radial 



