12 



The longitudinal stems are, as seen on the outside, convex or semi- 

 •€jlindrical, usually about-one third of a line in thickness, sometimes 

 a little less or more, and about their own thickness distant from each 

 other. They branch at distances varying from two to fifteen lines, most 

 frequently at ten or twelves lines. These are usually about seven 

 fenes trules in the length of three lines, with thin dissepiments between 

 them. When perfect the stems appear to be covered, on the outside, by 

 a smooth non-poriferous crust. When this is partially w^orn away, the 

 stems are seen to be longitudinally marked, each with four or five deep 

 striae, separated by thin sharp edged ridges. 



The poriferous side has not been seen. I am not sure that this is 

 a true Polypora. 



Locality and Formation. — Indian Cove, Gaspe Bay. Gasp^ limestone 

 No. 8. 



Collector.— Bell. 



Fig. 2. 



V\g. \ . —Polypora Psyche. Part of a large specimen. 



l.—Dictyonema splendens. Part of a frond 2 a, portion of another specimen near 

 the base, doubtfully referred to this species, 



DiCTYONEMA SPLENDENS. (N. Sp.) 

 Fig. 2, 2a. 



Description. — Frond four or five inches in length and width ; longi- 

 tudinal stems about one-third of a line wide, and about their own width 

 distant from each other. The connecting bars, or dissepiments, are very 

 slender and fragile. They seem to vary in their distances, from half a 



