250 THE ORIGIN OF VERTEBRATES 
Fic. 107.—Phrynus Margine-Maculata. 
Ce., median eyes; le., lateral eyes; glab., median plate over brain; Fo., fovea. 
ee 
LE o 
ZG 
m_.ob].(63) 
Fic. 108.—Phrynus sp. (?). CARAPACE REMOVED. 
cam., camerostome ; pl., plastron. 
