PKOF. r. J. BELL ON CEINOIDS FROM THE SAHUL BANK. 339 



On a small Collection of Criuoids from the Saliul Bank, North 

 Australia. By Prof. P. Jeffeey Bell, M.A., Sec. E.M.S. 

 (Communicated by "W. Peeot Sladek, Sec. Linn. Soc.) 



[Read 1st December, 1892.] 

 (Plates XXIII. & XXIV.) 



Some years since Dr. Jolin Anderson, F.E-.S., entrusted to the 

 late Dr. Herbert Carpenter a small collection of Crinoids from the 

 Sahul Bank, of whicb he bad become possessed as Superintendent 

 of the Indian Museum, Calcutta. To tbis collection my lamented 

 friend was never able to give mucb attention, and he does not 

 appear to have left any notes of his observations on the specimens 

 contained in it. Mr. "Wood-Mason, the present Superintendent 

 of the Indian Museum, has allowed me to examine the collection, 

 v^bich I find to present a few points of interest. 



Only one species of Stalked Crinoid is represented and none 

 of the individuals are in a very satisfactory condition. Tbere can, 

 however, be no doubt that the species is the Metacrinus interruptus 

 of P. H. Carpenter, described on pp. 367-9 of his ' Challenger ' 

 Report ; the single specimen on which the species was founded was 

 taken in 10° 14' N., 123° 54' E., at a depth of 95 fathoms. The 

 specimens in the present collection were taken from a telegraph- 

 wire in 11° 30' S., 125° E., or about as many degrees soutb as the 

 other was north of the line ', the depth, unfortunately, is not 

 given. 



Antedon longicieea. 



Antedon longicirra, P. Herbert Carpenter, Report on the Comatulw, 

 Zool. Chall. Exp. vol. xxvi. (1888), p. 103. 



Dr. Carpenter founded tbis species on a single specimen, and 

 was therefore unacquainted with the very considerable range of 

 variation in the length of the cirri in different specimens of this 

 species. While one specimen may have cirri 80 or more millim. 

 long, as in the type, in others the cirri may not be more than 60 

 millim. long. In this point, therefore, the cirri may be more like 

 those of ^. incerta than of A. longicirra. The present specimens 

 are shown, by tbe simple condition of tbe second pinnule and the 

 comparative shortness of the joints of the cirri, to belong to 

 A. longicirra. Wben I first noticed the variation in the length 

 of the cirri, I thought it might be possible to show that the two 



