646 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 43. 



Type-locality. — Station 5412, between Cebu and Bohol, 162 fathoms, 

 green mud; bottom temperature, 54.8° F. 



This genus is essentially Calliaster with swoUen or enlarged ter- 

 minal superomarginal plates and thorny or roughened spines. The 

 last character suggests MiltelipTiaster Alcock which has the actinal 

 spines ending in swoUen bifid or multifid points. The character of 

 the actinal spines is apparently the only one which separates Milteli- 

 pliaster from Calliaster. 



Genus ANTHENOIDES Perrier. 



Anthenoides Perriek, Bull. Mus. Comp. Zool., voj. 9, 1881, p. 23.— Type, A. 

 peircei Perrier. 



Leptogonaster Si-aden, Challenger Asteroidea, 1889, p. 326. — Type, A. cristntus 

 Sladen. 



Antheniaster Verrill, Trans. Conn. Acad., vol. 10, 1899, p. 173. — Type, Anthe- 

 noides sarissa Alcock. 



A comparison of specimens of Leptogonaster cristatus, of which 

 there are numerous examples in the Pliilippine collection, with Anilie- 

 noides peircei reveals no differential characters of generic importance. 

 Anthenoides sanssa, the type of Antheniaster, is very closely related 

 to and very evidently congeneric with Leptogonaster cristatus. Lep- 

 togonaster and Antheniaster should therefore be abandoned. 



The three species herein described belong to a section of the genus, 

 of which A. epixanthus is typical, in which the inferomarginals are 

 without lateral spines. These are present in the adults of peircei, 

 cristatus, and sarissa. 



KEY TO THE SPECIES OF ANTHENOIDES LACKING LATERAL SPINES. 



a*. Pedicellarise only on the adambulacral plates; abactinal granules few and micro- 

 scopic, visible only when abactinal membrane is dried; the abactinal area has 



superficially the appearance of being without granules epixanthus. 



(J?. Pedicellarige on the abactinal and actinal intermediate areas, as well as on the 

 adambulacral plates; abactinal granules numerous, at least in center of disk, 

 and easily seen without magnification. 

 h^. Superomarginals decreasing regularly and gradually in length from the first; 

 granules distributed uniformly all over abactinal area. 

 &. R=2 r; central granules of each abactinal plate the largest; proximal supero- 

 marginal plates coarsely granulated all over; superomarginals all wider than 



long granulosus. 



6-2. R=2.6 r; granules smaller, uniform; superomarginals finely granulated, only 

 a few proximals with coarse central granules; superomarginals at middle of 



ray longer than wide rugulosus. 



b^. Superomarginals maintaining their width to near end of ray; granules numerous 

 in center of disk, becoming much smaller and more widely spaced as periphery 

 is approached; superomarginals of proximal half of ray with coarse central 

 granules lithosorus. 



