NO. 5 CLARK: ECHINI OF WARMER EASTERN PACIFIC 307 



PLATE 67 



Fig. 71. Ihiobryssus coelus H. L. Clark, aboral view, x%, p. 343 



Fig. 72. Idiobryssus coelus H. L. Clark, oral view, x% 



Fig. 73. Idiobryssus coelus H. L. Clark, lateral view, x% 



Fig. 74. Brissus latecarinatus (Leske), aboral view, x%, p. 343 



PLATE 68 



Fig. 75. Brissus latecarinatus (Leske), aboral view with spines, xl, 



p. 343 

 Fig. 76. Meoma grandis Gray, aboral view, rough, xJ/2, p. 344 

 Fig. 77. Meoma grandis Gray, aboral view, smooth, tlYz 



PLATE 69 



Fig. 78. Spatangus californicus H. L. Clark, aboral view, x%, p. 345 

 Fig. 79. Spatangus californicus H. L. Clark, oral view, xl 



PLATE 70 



Fig. 80. Gonimaretia lae<vis H. L. Clark, aboral view, x2, p. 347 

 Fig. 81. Gonimaretia laevis H. L. Clark, oral view, x2 



