140 CONTRIBUTIONS TO CANADIAN PALAEONTOLOGY. 



largest specimen. Calyces polygonal in outline, their confluent margins 

 prominently angular, depth about one-half the width, sides steep, bottom 

 narrowly concave, septate to the centre. Septa of two lengths, from about 

 forty-eight to fifty-six in number, in different specimens, of which the longer 

 meet at the centre of the visceral chamber and the remainder reach more 

 than half way and often nearly to the centre, their sides not ornamented 

 with arched carina?. Tabula? flat, close set, four or five in a length of 

 1 mm., moderately regular, their continuity in a horizontal plane often 

 interrupted by the passage of the septa through them, narrow, forming a 

 small but well-defined central area from about 4- to i the diameter of the 

 corallite in width. Vesicular zone surrounding the tabulate area, broad, 

 made up of small vesicles of rather equal size, in eight or nine obliquely 

 ascending rows, filling the interseptal loculi. Increase apparently by 

 interstitial gemmation. 



11 This species differs from C. quadrigeminum, Goldfuss, principally in 

 having a much narrower tabulate area and a resultant broader vesicular 

 zone, in having the two orders of septa more nearly of a size and in the 

 absence of septal carina?." (Lambe, 1899.) 



Localities. — Dawson Bay, Lake Winnipegosis, J. W. Spencer, 1874 ; 

 Lake Manitoba, on the east side of the Narrows, J. B. Tyrrell, 1888 ; and 

 Lake Winnipegosis at Snake Island and in Dawson Bay, also at Lower 

 Salt Spring, Red Deer River, J. B. Tyrrell and D. B. Dowling, 1889; 

 Devonian (American Stringocephalus zone) and possibly Upper Devonian. 



Cyathophyllum vermiculare, Goldfuss, var. precursor, Freeh. 



Astrocyaihui vermicular is, Ludvig. 1866. Korallen aus palaeolithischen Formation 



(Palseontographica, vol. XIV), t. 58. 

 C iiathophyllum vermiculare, Goldf. mut. n. proecursor. Freeh. 1886. Die Cyathophyl- 



liden und Zaphrentiden des deutschen Mitteldevon, (Pala?on- 



tol. Abhandl., Dames und Kayser, vol. Ill), p. 63, pi. II, 



(XIV) figs. 4, 6-10. 

 ,, ii Goldfuss, var. precursor, Whiteaves. 1892. Contr. to Can. 



Palseon., vol. I, pt. IV, p, 263, pi. XXXV, figs. 1, la, 16. 



A few specimens of a simple coral from a number of localities on Lake 

 Winnipegosis and its vicinity have been referred by Dr. Whiteaves to 

 the above species, on the authority of Dr. Freeh. 



In these Lake Winnipegosis specimens the corallum varies from a 

 short, straight and rather stout form to one that is more cylindrical, pro- 

 portionately longer and somewhat nexuous ; length in different specimens 

 from 3 to nearly 5 cent, and breadth from 2*5 to 3 5 cent. The surface 

 exhibits numerous, slight, annular ridges and constrictions, whilst the 

 epitheca is smooth but marked by minor transverse lines of growth and 



