196 A. E. Verrill — Revision Genera and Species of Starfishes. 



P. mosaicxis Alcock and Wood Mason, is from the Andaman Sea, 

 India, in 188 to 220 fathoms. 



P. roseus (=3Iediaster roseus Alcock, 1893, p. 98) is from the 

 Laccadive Sea, in 740 fathoms. 



Paragonaster subtilis Perrier. 



Goniopecten subtilis Perrier, Bull. Miis. Comp. Zobl., ix, p. 26, 1881. Mem. 



Etoiles de Mer, p. 253, pi. v, figs. 3, 4, 1884. 

 Goniopecten subtilis Sladen, Voy. Chall. , xxx, p. 726, 1889. 

 Paragonaster subtilis Perrier, Exp. Trav. et Talism., p. 358, 1894. 



The type of this species, from station 31, Blake Expedition, I have 

 compared with specimens of P. formosiis Ver., of similar size. 



The two are very closely related, but in P. sitbtilis the adambu- 

 lacral plates usually have, on' the actinal surface, a rather long and 

 stoiitish acute central spinule ; and the outer marginal spinules are 

 also larger than those of formosus. On the proximal plates there 

 are usually 6 or 7 furrow spinules and 8 or 9 on the actinal surface, 

 all of which are stouter than in forjuosus. The spinules on the 

 actinal surface of the dentary plates are also more numerous, larger 

 and more divergent than in formosus/ they form four rather irregu- 

 lar rows. The larger actinal paxilla? have 14 to 16 marginal 

 granules, with 4 to 6 larger central ones. 



Possibly a large series of specimens would compel us to unite the 

 two, as only varietal forms of one species. 



Four other Atlantic species of this genus have been described. 

 They are as follows : 



P. formosus (Ver.) 1884, p. 383); 1894, p. 257; 1895, p. 137. 

 Off East Coast of United States, 1396 to 2021 fathoms. 



P. strictus Per., 1894, p. 363, pi. xxv, fig. 3. 

 East Atlantic, 3665 meters. 



P. elongatus (Per.), 1885. 1894, p. 362, pi. xxi, fig. 3, pi. xxiv, fig. 4. 



Off the Azores, 2115 to 4060 meters. 



Perrier suggests that this may be only a variety of P. subtilis and 

 that P. strictus may be the young of the same species, 



P. cylindratus Sladen, Voy. Chall., xxx, p. 314, pi. li, figs. 3, 4, pi. liii, figs. 

 3, 4, 1889. 



Off Cape Verde Islands, in 1850 fathoms. Closely related to P. 

 formosus. 



