NORTH-CAROLINA GEOLOGICAL SURVEY. 



307 



FIG. 240- l. 



Found in the miocene beds. Four views, a, Echinus Euf- 

 finii, viewed from above ; J, mouth ; c, spinegerous tubercles ; 

 d, ambulacral plates, and arrangement of pores : #, J, natural 

 size, &amp;lt;?, d, enlarged. 



FAMILY CLYPEASTARIDAE. ECHINOLAMPAS APPENDICULATUS. N. S. 



(Fig. 240- l.) 



Test thin ; body oval, depressed ; 

 margin thick or rounded ; somewhat 

 elongated, wider anteriorly than pos 

 teriorly ; ambulacra narrow, open at 

 their extremities ; sub-petaloid ; pores 

 connected by furrows ; mouth trans 

 verse ; excretory orifice horizontal, 

 marginal ; madriporiform plate ex- 

 centric ; apical disk occupied by a 

 sub-cordate sculptured plate, furnish 

 ed with a pentangula opening, in the 

 centre of which there is a pore ; are- 

 ola3 more numerous below than above- 

 area around the mouth inflected. 



ECHINOCYAMUS PARVUS. N. S. (Fig. 244.) 



Test small, oval, with rounded sides; avenues dorsal; 



mouth sub-central, rounded, large, with a crenulated margin; 



vent between the mouth and hinder margin ; genital 



FIO. 244. p 0res a pp aren tly four. Figure natural size. The 



mouth is large in proportion to the size of the body 



and the vent is situated half way between the mouth 



and margin. Eocene of Craven. 







