74 



CONTRIBUTIONS TO CANADIAN PALAEONTOLOGY. 



Species 



and 

 variety. 



H. catenula- 



ria, var. 

 Quebecensis. 



H. catemila- 



ria, var. 

 gracilis, Hall. 



Locality. 



Lake St. John, Q 

 Blue Point and 

 vicinity. 



East Selkirk and 

 various localities, 

 Lake Winnipeg. 



Jack Head Island, 

 Lake Winnipeg. 



Formation. 



Black River 



limestone. 



Galena — Tren- 

 ton. 



Shape and 



average size of 



corallites 



Oval 



Length. .125 mm. 



Breadth. 100 >• 

 Oval to somewhat 



quadrangular. 



Length . . 1 ' 85 mm. 



Breadth. 125 " 



Galena— Tren- Quadrangular, 

 ton. Length . . 2 ' 25 mm. 



Breadth. 2 00 ,, 



-Tren- 



Nelson River, 2nd Galena- 



and 3rd Liine-j ton. 



stone Rapids. 

 North of Grand Galena — Tren- 



Rapids, Saskat- ton. 



chewan R. (Stj 



tion No. 102.) 

 Churchill Harbour, 



Hudson Bay. 



West End Camp, 

 Anticosti, Que. 



Gamache Bay, An 

 ticosti. 



LO 



Anticosti Gr. 



Division 1. 



(Silurian.) 

 Anticosti Gr. 



Division 2. 



(Silurian.) 

 Anticosti Gr. 



Division 4 



(Silurian.) 

 Lake Temiscaming Niagara 



Wall's Cove, Anti- 

 costi. 



9 Jumpers, Anticosti 



Galena- 

 ton? 



Tren- 



Hudson River. 



Quadrangular 



Length .175 mm. 



Breadth. 125 „ 

 Oval to somewhat 



quadrangular. 



Length . . 1 ' 50 mm. 



Breadth. 1' 00 - 

 Quadrangular. 



Length. .110 mm. 



Breadth. 95 „ 

 Somewhat quadran 



gular. 



Length . . 1 ' 50 mm 



Bread th.l 00 .. 

 Rather broadly oval 



Length . . 1 " 50 mm 



Bread th.l 00 ., 



Average 



width of tu 



bules. 



0-2 



Not 



11 Lake Temiscaming 



12 Lake Temiscaming 



13 



Lake Temiscaming 



H. catenula- 

 ria, L. 



I 



14 Owen Sound and 

 Huronia Point 

 Cockburn Island 



Niagara. 



Niagara. 



Niagara. 



Niagara. 



Oval 



Length.. 2 -00 mm. 

 Breadth. 1-50 .. 



Broadly oval to cir- 

 cular. 



Length . . 1 " 75 mm. 

 Breadth. 150 .. 



Oval 



Length. .2" 50 mm. 



Breadth. 2 00 „ 

 Narrowly oval 



Length . . 1 ' 00 mm. 



Breadth. 50 .. 

 Same as No. 



Oval and rather nar- 

 rowly oval. 

 Length. .2' 75 mm. 

 Breadth. 2 00 ,. 



Not seen. 



Not seen. 



Not re c o g- 

 nizable. 



Not seen. 



Not 



Not satisfac 

 tory seen. 



O'O 

 05 



OS 



Not seen. . 

 10, except 



75 

 In some spe- 

 cimens 0'5> 



