STARFISHES OF THE PHILIPPINE SEAS. 115 



outer end of plate, is an intermediate series of smaller flattened papil- 

 liform round-tipped spinelets, also decreasing in size outward. 



Madreporie body small at the middle of the minor radius, but 

 nearer edge of paxillar area than center of disk. Striae small, radiat- 

 ing, irregular. 



r^/pe.— Cat. No. 30520, U.S.N.M. 



Type-locality. — Station 5297, Verde Island Passage, off Batangas 

 Bay, Luzon (lat. 13° 41' 20" N.; long. 120° 58' E.), 198 fathoms, 

 mud and sand; 2 specimens. 



Distribution. — The typical form is known only from the type 

 locality. 



Remarl\9. — In the shape of the ray this species is like P. coelochiles 

 Alcock (Andaman Sea, 230 to 250 fathoms), but lacks the stout, erect, 

 superomarginal spine, and has the abactinal plates irregular along 

 the radial line. The inferomarginal plates of euryactis are wider, 

 and in coelochiles the second series of actinal intermediate plates ex- 

 tends far along the ra3^ The actinal accessory inferomarginal spines 

 are lacking in coelochiles. P. misakiensis Goto is a closely related 

 species. 



PERSEPHONASTER EURYACTIS BREVISPINUS. new subspecies. 



Plate 24, fig. 2 ; plate 25, fig. 3 ; plate 30, fig. 2 ; plate 36, figs. 2, 2a. 



Diagnosis. — Differing from the type form in having fewer and 

 shorter superomarginal spines, which are usually lacking on the 

 first 5 or 6 plates, pedicellariae Avith slenderer jaws, and subambu- 

 lacral spines in 2 rows throughout the ra3^ 11=73 mm., r=19 mm. 

 R=3.8+r. 



Descriptio7i. — The general appearance is closely similar to that of 

 the type form, especially in respect to the size of disk and shape of 

 ray. The paxillae are similar but the pedicellariae are not quite so 

 numerous and the jaws are little if any stouter than the spinelets. 

 Superomarginal plates with only a tuft of inconspicuous spinules, 

 with 1 to 3 enlarged, but much shorter than the plate. Inferomar- 

 ginals Avith the second lateral series of spines usually well developed 

 and not reduced to a single spine until past the middle of ray, but 

 this is rather variable, for a specimen from station 5550 (referable 

 probabl.y to a distinct forma of this race) has the second series less 

 Avell developed than in euryactis. The actinal continuation of the 

 primary lateral series consists of from 5 to 3. and finally 2 spinules, 

 practically as in the type form. Furrow spines usually 7, and the 

 subambulacrals in 2 series at the base of ray as well as on the outer part. 

 Most of the actinal intermediate plates of the disk, adjacent to adam- 

 bulacrals, bear a group of G or 8 tapering, blunt papilliform. or 

 sharper, spinelets forming a fasciculate pedicellaria. more marked 

 than in ciiryartis. 



