Fossils Near Montreal. — Schuchert. 247 
as Strophonella punctiiUfera and Rhipidouiella oblata correctly 
indicate "the existence of the Lower Helderbergian group in 
two or three small outliers in the great western basin near to 
^Montreal." 
Subsequently, J. T. Donald''' published a list of 35 species, 
among which are Orthis hipparionyx, 0. oblata, 0. tubulostri- 
ata, Strophomena piinctulifera, S. profunda, Spirifer concin- 
nus, S. cyclopterus, Stricklandinia gaspcnsis, Pentamerus ver- 
neuili, P. galeatiis, and P. psendogaleatits. Here are forms 
characterizing the Niagaran, Helderbergian, and Oriskanian 
formations, an assemblage never met with in America. 
In 1890, Mr. William Deeksf restudied these fossils and ex- 
tended the list to 44 species. Here again appears the same re- 
markable assemblage first noted by Donald. In 1896, the fos- 
sils of Donald and Decks, now in the Peter Redpath Museum., 
were re-examined by Dr. Ami, who published a list of 45 
species.? This list differs greatly from those previously given, 
and is far more satisfactory, as the species included are appar- 
ently of the Helderbergian or Oriskanian age, excepting a 
Spirifer "very much like 6^. pennatiis (=6'. mueronatus)." 
In the writer's resume of the American Lower Devonic 
faunas§, it is stated that one specimen of Spirifer concinnus, as 
identified by Donald, "is more like 6". ciiinberlandiae, but the 
bilobed fold of the dorsal shell is a character which associates 
his species with 6^. mucronatus Conrad, of the Hamilton." As- 
suming at that time that all the St. Helen's Island fossils are 
from the "conglomerate," and as Spirifer imtcronatus and 
"Spirifer apparently near S. granulostis Conrad" indicate a 
Middle Devonic formation, that age was accepted for the "con- 
glomerate" and Dr. Whiteaves was so informed. The latter, in 
his presidential address before section E of the American As- 
sociation for the Advancement of Science ||, stated, with the 
permission of the present writer, that the St. Helen's Island 
fossils "are probably the equivalent of part of the Hamilton 
formation of Ontario and New York, and not of the Lower 
Helderl>erg." It is true that Dr. Ami was the first to notice the 
Spirifer "very much like S. pennatus' but he made no correla- 
• Canadian Naturalist, n. ser., ix, 1881, pp. 302-304. 
t Canadian Record of Science, iv, 1890, pp. 104-100. 
j Ann. Kept. Geol. Surv. Canada, n. ser. vii, 1896, pp. 15oJ-156J. 
§ Bull. Geol. Soc. America, 1900, p. 332. 
II The Devonian System in Canada, 1890, p. 16. 
