Genera of the I^orth American Palaeozoic Bryozoa. 529 



extending nearly to the sharp margins. Between these lateral 

 rows the margin of the frond is more or less indented." (Uirioh ) 



The type species closely resembles Stictopora jpalmipes^ which, 

 though showing some variation from the ordinary forms of 

 SnoropoRA, has not been considered distinct from that genus, 

 though it may be. 



Eusj^ilopora Barrisi is identical with Stictopora crassa and does 

 not have the characters which have been used to separate Eqspi- 

 LOPORA from Stictopoea. 



Fig. 83. Euspilopora serrata, natural size. 



Fig. 84. Surface, xlO. 



Fig. 85. E. barrisi, natural size. .. 



Fig. 86. A portion, xlO. 



EvACTiNOPOBA, Mcck and Worthen. 

 (Proc. Acad. Nat. Sci. Phila., p. 165. 1865.) 

 Type, Evactinopora radiata^ Meek and Worthen. 

 " Zoaria consisting of four or more vertical leaves, which radi- 

 ate from an imaginary axis so as to present in a transverse sec- 

 tion a star shaped or cruciform outline ; leaves thin, double ; 

 67 



