NO. 5 CLARK: ECHINI OF WARMER EASTERN PACIFIC 259 



PLATE 43 



Fig. 19. Loxechinus albus (Molina), aboral view, xl, p. 265 

 Fig. 20. Caenocentrotus gihbosus (L. Agassiz and Desor), aboral 

 view, xl, p. 265 



PLATE 44 



Fig. 21. Allocentrotus fragilis (Jackson), aboral view, xl, p. 276 

 Fig. 22. Strongylocentroius purpuratus (Stimpson), aboral view, xl, 

 p. 279 



PLATE 45 



Fig. 23. Strongylocentroius franciscanus (A. Agassiz), aboral view, 



x^o, P- 278 

 Fig. 24. Echinometra oblonga (Blainville), aboral view, xl, p. 281 



PLATE 46 



Fig. 25. Echinometra VanBrunti A. Agassiz, aboral view, x%, p. 293 

 Fig. 26. Clypeaster europacificus H. L. Clark, aboral view, x%, p. 294 



