WHITEAVES.J DEVONIAN FOSSILS OF MANITOBA, ETC. 265 



buds proceed (%. 6), or increasing by calycinal gemmation (fig. 7), the 

 simple forms and those from which lateral buds are produced being conical, 

 rather slender and more or less curved or bent. Epitheca faintly ribbed 

 longitudinally, transversely striated and marked also with a few irregu- 

 larly disposed constrictions and re-elevations, the results of periodic 

 arrests of growth : calyx rather deep, flat at the bottom and with nearly 

 vertical sides : primary septa twenty four, extending about halfway to the 

 centre and slightly ii-regula.i- : secondary septa equal in number to the pri- 

 maries, but not reaching more than half as far inward. Internal structure, 

 as seen in longitudinal sections, consisting of a very narrow outer zone of 

 vesicular tissue and of a broad inner tabulate area. The vesicles are 

 small and rather regularly disposed, while the tabula^, which are for the 

 most part complete and regular in their disposition, are very chjse-set flat 

 in the centre but bent downward at their outer margins. 



Red Deer River, at the Upper .Salt Spring and abijut five nules from 

 Dawson Bay, Lake Winnipegosis, J. B. Tyrrell, 1889 ; abundant. Beardy 

 Island, Dawson Bay, J. B. Tyrrell, lis.sg : one specimen. 



The specimens for wdiich the foregoing name is proposed appear to dilfer 

 from those which are here referred to C. iJianthus, in the much greater 

 regularity and completeness of the tabula? in the central tabulate area. 



Cyathopiiyllum pethaioides. (N. 8p.) 



Plate 34, figs. 1, la anil 2. 



Coralluni simple, straight or slightly curved, in well preserved speci- 

 mens attached to some foreign body by a small and partially clasping 

 basal expansion, conical and broadly spreading, the entire height being not 

 much greater than the width at the summit. Outer surface marked with 

 faint longitudinal costse, also by fine ti-ansverse striie and a few rather 

 coarse wrinkles at irregular intervals. Calyx circulai', oblic^ue in some 

 specimens but not in others, subcorneal but irregular in shape, usually very 

 deep and in most cases excavated to within an extremely short distance 

 of the base : septa about forty five in number and apparently equal in 

 size, consisting of mere ridges, which are acute and moderately prominent 

 in the upper poi-tion of the sides of the cup, but which are much more 

 strongly developed at and towards its base. Internal structure, as sh( A\n 

 in longitudinal sections, consisting of vesicular tissue between the septa : 

 tabuhe almost but not entirely absent, a single transverse diaphragm at 

 the bottom of the cup being observable in two out of the ten specimens 

 collected. 



Dimensions of the specimen figured : greatest height, thirty nine mil- 

 limetres, maximum width, twenty nine mm. In another specimen the 



