of Edmhurgk, Session 1883-84. 
355 
jDaratively rich. For it includes four stalked Crinoids, three of 
which were new to European seas and also new to science, while 
one represents a new generic type altogether ; and among the seven 
Comatula species were three or possibly four new forms, one repre- 
senting a genus which, up till very lately, has scarcely been known 
to occur outside the limits of the tropics. Sir Wyville Thomson’s 
list embraces only seven species of Crinoids altogether ; whereas 
eleven different types were really obtained, seven being Comatulcp, 
and four stalked Crinoids, the latter including three additions to the 
four species then known. 
These facts seem to me of sufficient interest to merit being treated 
separately, so that they may not be lost sight of in the general 
account of the Crinoids which will appear in the “ Challenger ” 
Keport. 
Family Pbntacrinid.Eo 
Genus PentacriniLS, Miller. 
Cainocrimis, Forbes. 
Picteticrmus, de Loriol. 
1. Pentacrinus wyville-tliomson% Jeffreys. 
H.M.S. “Porcupine,” 1870. Station 17. Lat. 39° 42' N,, long. 
9° 43' W. 1095 fathoms, Temp. 39°'7 F, Ooze. “About 
twenty specimens.” 
Remarks. — This fine species was v/orthily dedicated to Sir Wyville 
Thomson, in the Report of Drs Carpenter and Gwyn Jeffreys] but 
no further description of it was published until the appearance in 
1872 of The Depths of the Sea. This contains a good figure, 
with a description by Sir Wyville, which is identical with that 
given in his paper on the “ Porcupine ” Crinoids. A series of five 
beautifully executed plates, illustrating the anatomical characters of 
the skeleton, which were drawn by Mr Hollick for Dr Carpenter, 
will appear in the “ Challenger ” Report. 
P. iDyville-thomsoni has a closed ring of basals, and would there- 
fore belong to Forbes’ genus Gainocrinus, which has recently been 
revived by de Loriol.* I have elsewhere given my reasons for 
regarding Gainocrinus as indistinguishable from Pentacrinus. f 
* Monographic des Crinoidcs fossiles de la Suisse, p. 111. 
t Journ. Linn. Soc. Zool., vol. xv. p. 210 ; and Bull. Mus. Comp. 
Zool., vol. X. Fo. 4, p. 168. 
