BRYOZOA—CRYPTOSTOMATA. 



141 



82. P. reticulata (Hall). (Fig. 201, a.) Ordovicic. 



Generally as fragments of depressed, funnel-shaped zoarium with 

 rounded branches 0.2 to 0.3 mm. in diameter, frequently and regu- 

 larly inosculating ; fenestrules about as wide as branches ; three 



W 



Fig. 196. Phylloporina asperato- striata with enlargement of celluliferous and non- 

 celluliferous faces, the latter showing the asperate-striate character. 



irregular rows of zocecia with subcircular apertures and numerous 

 acanthopores ; reverse side finely striated. 



Black River and Trenton of New York, Vermont, Minnesota 

 and Canada. 



83. P. asperato-striata (Hall). (Fig. 196.) Siluric. 



Oval, somewhat unequal fenestrules; outer face roughly striated, 

 inner with three, four or more rows of subangular cells in 

 obliquely parallel lines. 



Rochester shale of New York, Canada, etc. 



v 



Fig. 197. Drymotrypa diffusa with celluliferous sides enlarged. 



XLIX. Drymotrypa Ulrich. 



Dichotomously and frequently branching, longitudinally striate 

 on one side, and on the other with several ranges of tubular zocecia 



