BRA CHI OP OD A — TEL O TREMA TA , 



357 



Helderbergian of Maine, New York, Pennsylvania, Ohio, Mis- 

 souri, New Brunswick. 



Fig. 469. Meristella princeps (Pal. N. Y., III. 



FlG. 470. Meristella arcuaia (Pal. N. Y., III.). 



