AMPHIURIDAE 



275 



in poor condition, it can be recognized as being the specimen described and figured by 

 Studer under this name. The figure of the dorsal side, in particular, shows to some 

 degree the actual character of the specimen (though his statement that the scales of the 

 dorsal side are " feingekornt " is a mistake, probably referring to the usual structure of 

 these scales as seen under a fairly high magnification). 



The representation of the mouth papillae in Studer's fig. lo b is quite misleading. 

 There are }iot three mouth papillae as shown there ; it appears to be the mouth tentacle 

 which Studer has mistaken for a papilla. Actually there are only two mouth papillae, 

 as typical of Amphhira (Fig. 14 a, b), and accordingly the species is a true Amphiiira. 

 The shape of the ventral plates, etc. is very poorly shown in Studer's figure ; they are 

 as shown in Fig. 14 «, b. 



Fig. 14. Amphiura Lymani, Studer. Part of oral side of two different specimens («, b); 



part of dorsal side (c). X22'5. 



This species recalls Lyman's Amphhira tomentosa from Kerguelen. I had, indeed, 

 at first identified these specimens as A. tomentosa, it being impossible to realize from 

 Studer's description and figures that they could be identical with his A. Lymani. 

 Having now seen the type-specimen of ^. tomentosa in the British Museum I may add 

 here some information about this species. The ventral interradii are half naked; pi. 

 xxix, fig. 10 of the Challenger Ophiuroidea, which shows the ventral interradii scale- 

 covered, is thus erroneous (though fig. 1 1 shows the plates of the dorsal side of the disk 

 correctly). Primary plates are not distinguishable. The buccal plates are rounded 

 rhombic, not triangular as shown in pi. xxix, fig. 10; the outer mouth papilla is rather 

 broad, but pointed, not scale-like as shown in the figure, which is on the whole poor and 

 unreliable. 



It may be suggested that the specimens from the South Orkneys (' Scotia ') referred 

 by Koehler (1908, Scott. Nat. Antarctic Exped., Asteries, Ophiures et Echinides, 

 p. 607) to A. tomentosa are also in reality A. Lymani. 



