220 Clark — New Genera and Species of Crinoids. 



Mainly from the results of the investigations carried on by 

 the United States Fisheries steamer Albatross, and by Mr. Alan 

 Owston, of Yokohama, in his yacht the Golden Hind, sixty-two 

 comatulids are already known from southern Japan, and eight 

 more from the northern part of that country, making seventy 

 in all. In spite of this seemingly long list, I recently hazarded 

 a remark that there probably were yet many crinoids in those 

 waters of which we had no knowledge; and the occurrence, in 

 this collection, of six additional species from Japan shows that 

 my suspicions were w r ell founded. 



The species of Himerometra described, excepting H. grandis, 

 all belong to that group of the genus comprising such species as 

 H. milberti, IF. anceps, and H. variipinna, in which the rays 

 are in apposition, often more or less flattened lateral^, and the 

 middle and distal brachials are exceedingly short and oblong. 



In the following diagnoses the number of the cirri is given in 

 Roman numerals, the number of their component joints 

 (exclusive of the terminal claw) in Arabic; thus (under Com- 

 anthus decameros) "Cirri xl, 16-17" signifies that the species 

 has forty cirri, each of sixteen or seventeen joints. In desig- 

 nating the pinnules, the distichal (n Br) pinnule is represented 

 as P JM the palmar pinnule as P P , the post-palmar pinnule as 

 P M ; pinnules of the outer side of the arm are referred to by 

 Arabic numerals ; thus Pi is the pinnule of the second brachial, 

 P 2 that of the fifth, P :i that of the seventh, etc. ; italics denote 

 pinnules on the inner side of the arm, P« being the pinnule of the 

 fourth brachial, Ft, that of the sixth, P c that of the eighth, etc. 



I have, as before, followed Dr. F. A. Bather's suggestion in 

 regard to brachials united by syzygy, considering them as two 

 separate brachials, not as a single one "with a syzygy," as was 

 done by Carpenter and Hartlaub. 



Detailed discussion of the species herein described is reserved 

 for the completed report on the collection, now in preparation. 



Family COMASTERIDJE. 



Genus COMANTHUS A. H. Clark. 



Comanthus intricata (Lutken IMS. ) sp. now 



Actinometra intricnta Lutken IMS. (part).* 



* Not Actinometra intricata Lutken, Mus. (iodeffr. Cat. V. i>. I'.ki, 1874, and following 

 authors, which is the Comatula rotatoria of Lamarck, 1816, of which the Alecto parvi- 

 cirra of Midler, 1841, is a synonym. 



