76 



CONTRIBUTIONS TO CANADIAN PALEONTOLOGY. 



Species 



and 

 variety. 



H. catenu- 

 laria, i^ai' 

 mieropora, 

 Whitfield. 



'"{ 



15 



16 



17 



18 



19 



20 



Locality. 



H. oatenula- 

 rii, V a r . , -[ 21 

 simplex. 



H. catenula- ( 

 ria, V a r . , -j 22 

 amplitubula- (. 

 ta. 



H. catenula- 

 ria, var., ni- 

 tida. 



23 



24 



Derby township, 

 nr. Owen Sound, 

 Ont. 



Derby township, 

 nr. Owen Sound. 

 Ont. 



Cross Lake Rapids, 

 Saskatchewan R. 

 and Cedar Lake. 



NE side Columbia 



River, B.C. near 



Donald. 

 NE side Columbia 



River, B.C. near 



Donald. 

 Hespeler, Ont. . . 



Formation. 



One mile east of 

 Little Casoape- 

 dia River, Que. 



L'Anse k la Barbe, 

 I'anse au Gascon, 

 Que. 



L'Anse h, la Barbe, 

 r Anse auGascon, 

 I'Anse aux Bou- 

 leaux & I'Anse k, 

 la Vieille, Que. 



Neigette Palls, Q. . 



Niagara.. 



Shape and 



average size of 



oorallitea. 



L.l-50to2-00 mm. 

 Breadth. 1-50 



Average 

 width of tu- 

 bules. 



Niagara. . 



Niagara.. 



UpperSilurian 

 Upper Silurian 

 Guelph 



Lower Helder- 

 berg. 



Lower Helder- 

 berg. 



Lower Helder- 

 berg. 



Lower Helder- 

 berg? 



Circular or oval Silicified 



specimens, 

 stnicture 

 obscure, 

 tubules not 

 seen. 

 0-75 



Broadly oval to cir- 

 cular. 

 Diameter 1 '25 mm. 



Oval to circular. . . . 

 From 3 by 2 mm. 

 to 1 ■ 5 by 1 mm 



Broadly oval 



Length . . 2 ' 50 mm. 

 Breadth 2-00 „ 



Oval 



Length .070 mm, 

 Breadth 0-45 n 



Oval 



From 1-50 by 100 

 to 3-50 by 2-50 

 mm. in different 

 specimens. 



Oval 



Length. .4 '00 mm. 

 Breadth.. 25 „ 



Broadly oval 



L. 2-5to200 mm. 

 Breadth..l75 n 



Oval 



Length. .145 mm. 

 Breadth.. 1- 00 ., 



Same as No. 



0-40 



Not seen 



Not seen 



Not recog- 

 nizable. 



Not present. 



20to2-25 



0-50 



23. 



