250 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 8 



PLATE 39 



Fig. 9. /J stropyff a pul'vinata {Lamarck), ahoral view, X approx. Yz, 



p. 236 

 Fig. 10. Centrostephanus coronatus (Verrill), aboral view, x approx. 



H, p. 237 



PLATE 40 



Fig. 11. Arbacia incisa (Blainville, ? Gmelin), aboral view, x%, 



p. 244 

 Fig. 12. Arbacia spatuligera (Valenciennes), aboral view, x%, p. 246 

 Fig. 13. Tetrapygus niger (Molina), aboral view, x%, p. 247 



PLATE 41 



Fig. 14. Lytechinus anamesus H. L. Clark, aboral view, xl, p. 247 

 Fig. 15. Lytechinus pictus (Verrill), aboral view, xl, p. 249 

 Fig. 16. Lytechinus semituberculatus (Valenciennes), aboral view, 

 xl, p. 261 



PLATE 42 



Fig. 17. Toxopneustes roseus (A. Agassiz), aboral view, xl, p. 262 

 Fig. 18. Tripneustes depressus A. Agassiz, aboral view, x%, p. 263 



