PLATE XXV. 



BoTKioPYOus ALABAMENSis Claik (page 60). 



Fig. la. Upper surface of test. 

 1/*. Lower surface of test. 

 Ic. Side view of tlie same. 



Id. Portion of an auibnlacral area at base of petaloidal region, enlarged. 

 le. Same in center of petaloidal region, highly magnified. 

 If. An interambulacral plate, highly magnified. 



154 



