OPHIOLEPIDAE 



335 



form. From the sparse material at hand it is, of course, impossible to tell whether this 

 represents a separate variety or is perhaps more typical of the species than the (younger) 

 form here designated as the type. But, however this may be, the specimens from St. 175 

 are all alike, and it thus seemed more reasonable to select the largest of them as the 

 type, instead of the single specimen from St. 195. 



Though in no way a very marked form, I do not see that it can be referred to any 

 known species of Ophiiira. 



Fig. 47. Ophiura serrata, n.sp. Part of oral side {a); dorsal side {b). Part of arm, side view (c). 

 Proximal part of arm, dorsal side, with radial shields, of specimen from St. 195 {d). All xiz's'. 



Ophiocten amitinum, Lyman 



(Plate VIII, fig. 2) 



Ophiocten amitinum, Lyman, 1882. Sci. Results H.M.S. 'Challenger'. Ophiuroidea p 70 

 pi. IX, figs. 7-9. ' F- /^> 



O. amitinum, Studer, 1885. Vbersicht uber die Ophiuriden der' Gazelle' Abh Akad Berlin 



1882, p. 16, Taf. ii, fig. 8 a-f. 

 O. amitinum, Ludwig, 1899. Ophiuriden Hamburger Magalh. Sammelreise, p. 4. 

 O. amitinum, H. L. Clark, 1923. Echinoderm Fauna of South Africa. Ann! S. African Mus., 



XIII, p. 363. (Var. si?iiulans, Mortensen.) 



