48 



limestone, near Thorold, Owen Sound, the Manitoulin Islands, Rockwood 

 and Isthmus Bay (Lake Huron) ; at Lake Temiscamang, Dudswell and 

 Port Daniel. The specimens in the Museum of the Survey from most of 

 these localities belong to the large tubed or typical form of the species 

 which Prof. Whitfield suggests (op. cit.) should be called H. catenulatus 

 var. labyrinthicus, but some of those collected at Lake St. John by Mr. 

 James Richardson in 1857 or by Mr. Walter McOuat in 1871, and at 

 Port Daniel by Sir W. Logan in 1843, represent the small tubed form or 

 dimorphic variety which Edwards and Haime described and figured as the 

 Halysites escharoides of Lamarck. 



Since 1863, characteristic examples of the typical form of H. catenularia 

 have been collected by Dr. R. Bell (in 1879) at the second and third 

 limestone rapids of the Nelson River, Keewatin, and it has been found to 

 be abundant in the Trenton limestone of the Red River valley, in Mani- 

 toba (at East Selkirk and Lower Fort Garry), of the western shore of Lake 

 Winnipeg and of many of the islands in that lake. Specimens of the 

 typical form of the "chain coral " and of the variety with extremely small 

 corallites {H. catenulatus var. microporus, Whitfield) were collected by 

 Prof. A. P. Coleman in 1864, in the Silurian (Upper Silurian) rocks of 

 the north-east shore of the Columbia River, near Donald. Mr. McCon- 

 nell obtained the typical form in 1886 at several localities "along the 

 central and more elevated parts of the Beaverfoot Range of the Rocky 

 Mountains and its continuations," in rocks which are well exposed between 

 Palliser and Golden, on the line of the Canadian Pacific Railway. Mr. 

 Tyrrell collected it in 1889 in rocks apparently of the age of the Niagara 

 lim estone, on the Saskatchewan River at and below Cedar Lake. It has been 

 found near the Neigette River, six or seven miles east of Rimouski village, 

 in the province of Quebec, by Mr. Weston in 1880, and at Lake Meta- 

 pedia by Prof. L. W. Bailey in 1888. 



Halysites agglomeratus, Hall. 



Catenipora agglomerata, Hall 1843. Geol. Rep. 4th Distr. N. York : tables 



of fossils, No. 22, fig. 2. 



Hall 1852. Pal. N. York, vol. II., p. 129. pi. 35, 



figs. 2, a-g. 

 Halysites agglomerata, Nicholson. . .1875. Rep. Pal. Prov. Onfc., p. 51, figs. 24, c-d, 



and p. 66. 

 Guelph, Prof. H. A. Nicholson (op. cit., p. 66). 



Halysites agglomeratus, var. compactus. 



Halysites compactxLS, 'Romiugev 1876. Geol. Siirv. Mich., Foss. Corals, p. 78 



pi. 29, fig. 3. 

 Whiteaves.. .1884. This volume, pt. 1 , p. 2. 



