WEST INDIAN STARFISHES 55 



versely elongated, their outer ends forming the margin, and bear- 

 ing spines, 



Adambulaeral plates correspond with the inferomarginals and 

 join them. They bear a transverse row of slender spines, usual- 

 ly without webs. Interactinal plates are usually lacking. 



Jaws carinate, with a row of several adoral spines and a larger 

 terminal pair ; actinal surface with, a pair of larger epioral spines. 



Dorsal papula are said to be lacking in the type genus; they 

 are present in Remaster. 



Genus Remaster Perrier. Type R. palmatus Per. 



Korethraster (pars) Perrier, op. cit., 1881, p. 12; Etoiles de Mer, p. 211, 



1884. 

 Bemaster^^ Perrier, op. cit., pp. 150, 161, 1894 (as subgenus). 



Dorsal plates have a four-lobed base, the lobes overlapping, 

 leaving large papular pores between them ; from the central boss 

 arises a divergent circle of slender webbed spinules. 



Inferomarginal plates form the border and bear marginal 

 spines. Two or three rows of imbricated interactinal plates on 

 the rays, corresponding to the adambulacrals, and bearing about 

 two webbed spines. The jaws have large epioral spines. 



Remaster palmatus Perrier. 



Korethraster palmatiis Per., Bull. Mus. Comp. Zool., ix, p. 12, 1881; Nouv. 



Arch, du Mus., vi, pp. 311, 376, pi. viii, figs. 5, 6, 1884. Sladen, op. 



cit., pp. 463, 796, 1889. 

 Korethraster Nutting, Narrative, p. 167, 1895. 

 Memaster (subgenus) palmatus Per., Exp. Trav. et Talism., pp. 158, 161 



(redescribed), 1894. 



Plate xi ; figure 2. 



The type of Perrier had the radii 4.7™'" and 14'"'°; ratio, 1 :3. 



The form is stellate, with a swollen disk and short rays. 



On the dorsal surface a deep interradial groove runs up to the 

 dorsal pore, dividing the disk into five parts. The dorsal pore 

 is surrounded by granules, but has no visible plates. 



Five primary radial plates are distinguishable. The rest of 

 the radial areas are covered by squarish plates, with emarginate 



12 The name refers to the large flat oral spines (t. Perrier.) 



