Mediaster bairdii Verrill 



Synonymy : 



Archaster bairdii Verrill, 1882. 

 Mediaster stellahm Perrier, 1891. 

 Isaster bairdii: Vferrill, 1895. 

 Mediaster bairdii: Vemll, 1899. 



Descrii^tion : 



Form stellate, with broad flat disc and moder- 

 ately long tapered rays. Marginals well devel- 





iS?^-" 



i I I I 



B 



FiGtTRE 23. — Goniaster americanus. A, aboral ; B, oral. 

 1 cm. indicated. 



resting in depressions in plates. Adambulac- 

 rals with four stout, prismatic spinules in 

 furrow series and, on distal adambulacrals, 

 a single large obtuse spine outside the furrow 

 series. Rr=1.8: 1. Color dark bix)wn on top, 

 light brown underneath. 

 Range : 



North Carolina to Florida and the West In- 

 dies, 55 to 235 m. Taken mainly from the edge 

 of tlie shelf off Cape Lookout. 



'ifti 



\ 



Figure 24. — Mediaster bairdii. A, aboral ; B, oral. 3 cm. 

 indicated. 



150 



U.S. FISH AND WILDLIFE SERVICE 



