PLATE XLVm. 



Fig. I. Hippasteria phrygiana (Parel.) Agassiz. Part of the dorsal surface j 



of a New England specimen (314) ; X 6. 



Fig. 2. The same. One of the jaws and adoral plates; a, a', first and second ■ 



adambulacral plates ; ep, epioral spines ; pr, apical peroral spines ; 



o, large valvular pedicellaria on first actinal interradial plate; 



x6. ; 



Fig. 3. The same. Two inferomarginal plates (m") and adjacent interactinals ; \ 



X6. ^ 



Fig. 4. The same. Central part of disk, showing dorsal " anal " or nephridial J 



pore ; X 6. \ 



Fig. 5. The same. Three adambulacral plates and spines (a) and adjacent ' 



interactinal plates, each bearing a large valvular pedicellaria ; X 6. J 



Fig. 6. Orthasterias tanneri Verrill. a, outer, and a', inner adambulacral ; 



spines ; w', supramarginals, and m", inferomarginals ; 0, one of the '' 

 large, acute major pedicellariae ; X 7- From off the Atlantic coast. 



No. 5524. Yale Mus. j 



(98) 



