346 



DISCOVERY REPORTS 



form a regular border, as is shown by Koehler (also in the photographic figure). The 

 dorsal side of the disk has evidently been almost completely covered by the granules, 

 only the central plate and a small part of the radial shields remaining bare. Finally the 

 dorsal arm-plates show a characteristic feature not observed by Koehler, the proximal 

 four or five plates having a series of granules along their distal edge (Fig. 53 b). I have 

 not observed transverse lines as shown in Koehler's fig. 52. 



In spite of the differences here pointed out, I think the present specimen really 

 identical with Koehler's Ophiopvren regulare. With the very scarce material available 



Fig. 53. Ophiopyren regulare, Koehler. Part of oral side {a) and dorsal side (/)). ,20. 



it would be unreasonable to lay much weight upon the various minor differences, which 

 are due partly to inaccurate drawing, partly no doubt to individual differences, such as 

 are known to occur to no small extent in these feebly calcified deep-sea forms. It would 

 also be rather strange if two different species of these rare deep-sea forms should occur 

 here in the same region. 



Plate VIII, fig. I, is a photograph of the living specimen. The colour is stated to have 

 been "disc deep crimson red with a very large pale pentagonal patch in centre. Arms 

 crimson red barred with cream colour." The preserved specimen does not show the 

 slightest trace of this beautiful colour. 



