202 



PROCEEDINGS OF THE NATIONAL MU8EVM. 



Dissogenes styracia. 

 Ferdina glypiodisca. 

 Fromia eusticha. 



Marginaster paucispinus. 

 Tarachaster tenuis. 



NepanLhia pedicellaris. 

 Nepanthia platydisca. 



Lophaster suluensis. 

 Solaster tropicus. 



Asthenactis medusa. 



LiNCKIIDiE. 

 ASTEROPIDiE. 



Ganeeiid^. 

 asteeinidje. 



solasterid^. 



Myxasterid^. 



Fromia hemiopla. 

 Ophidiaster trychmis. 

 Leiaster analogus. 



Anseropoda macropora. 



Solaster scotophilus. 



Rhipidaster (Xenorias) polyctenius. 



Family LUIDIID^. 



LUIDIA PRIONOTA, new species. 



Similar in general form to Luidia forficifer Sladen, but differing in 

 lacking entirely adambulacral pedicellarise ; in having proximally at 

 least 5 adambulacral spines in addition to the curved furrow spine, the 

 4 outer forming 2 longitudinally oriented paii-s; central spinelets of 

 paxillse not granuliform; marginal spine usually longer than extreme 

 width of inferomarginal plate; actinal intermediate pedicellarise usu- 

 ally absent. Rays 5. R =32 mm., r = 5 mm., R = 6r; breadth of ray 

 at base, 6 mm. Abactinal surface slightly arched, usually plane on 

 radial region of ray; inferomarginals slightly arched, forming a broad 

 border to actinal surface ; marginal spines fairly long, single, forming 

 a prominent fringe to ambitus. 



Type.— C&t. No. 32622, U.S.N.M. 



Tyjje-locality. — Station 5181, off eastern Panay (6.6 miles northeast 

 of Antonia Island), 26 fathoms, mud and fine sand. 



L. prionota, on account of the absence of adambulacral pedicellarias 

 and the large number of adambulacral spines proximally can not be 

 confused with L. forficifer or L. quinaria (including L. limhata). It 

 differs from L. penangensis de Loriol, which has constantly 6 rays and 

 a prominent madreporic body, in having larger paxillse, in lacking 

 adambulacral pedicellarise, and in having more than 3 adambulacral 

 spines. 



The absence of adambulacral and abactinal pedicellarise suggests 

 L. daihrata of the West Indies and southern United States, and L. 

 foliolata (southern Alaska to Mexico). 



