442 



THE VOYAGE OF H.M.S. CHALLENGER. 



Side plate. 

 Subtentacular canal. 

 Subambulacral plate. 



Syzygy. 



Tentacle. 

 Testis. 



Tentacular branch of water-vessel. 

 Central vascular axis of stem. 

 Ventral radial furrow. 

 Eadial water-vessel. 

 "Water-pore. 

 Water-vascular ring. 

 Water-tube. 

 Plexiform gland. 



Its ventral end which joins the labial 

 plexus. 



NOTES. 



1. In the following lists there is a reference after each figure to a certain page of the Text. In the case of 

 figures which illustrate entire specimens, the reference given is usually to the page in the systematic part of the 

 Eeport on which the species is first described. But with those figures that represent structural details, 

 reference is given to the page containing the explanation which the figure was designed to illustrate. This is 

 sometimes in the morphological and sometimes in the systematic part of the Eeport. In a few cases there is 

 no special reference to a figure in the Text ; and the number of the page following its explanation is either that 

 of the specific diagnosis ; or that of a page containing a description of structural peculiarities which is more or 

 less illustrated by the figure in question. 



2. The magnification given for those figures which were drawn before the collection of Stalked Crinoids 

 came into my hands is in most cases only approximate (circa). A record was rarely kept of the amount of 

 enlargement ; and I have therefore estimated it as closely as possible. All the figures for which I am 

 responsible, however, were drawn according to a definite scale, which varied according to circumstances, but 

 was carefully noted in each case. 



3. All the figures which were drawn for Sir Wyville Thomson, and also those on Plates LVIL, LIX., and 

 LX. were drawn on the stone in the natural jiositious of the specimens, so that they appear reversed in the 

 Plates. This should be remembered in future attempts to identify the individuals here described as types ; and 

 also in reading the description of the anatomy of the disk in Chapter VI. 



£ERATA. 



Plate Vila. — The figure of the radial axillary in the lower right-hand corner should he lettered " 17 " instead 



o/"7." 

 Plate Vllb.— In the upper part of fig. 6, "a" should be "a'," as in the lower part. On the left of fig. 4, " T 



should be " L." 

 Plates XL, XII., XIIL, and XYll.^ Instead of " Pentacrinns asferia, L.," read " Peniacriiius asierhis, Linn., 



sp." (see p. 303). 

 Plate XXL— Fig. 1 should be " la." 

 Plate LX.— Fig. 6, "ad" should be "a'." 



