234 TJic American Geologist. October, i899 
white dolomitic limestone holding numerous examples of a 
large Stringocephalus which is apparently identical with the 
S. burtini of Defrance and of other European authors. More- 
over, it is here associated with many fine specimens of 
Sphoerospongia tesselata Phillips, and with fossils that cannot 
at present be distinguished from the following well-know-n 
European species. 
Cladopora cervicornis (De Blainville). 
Spirorbis omphalodes Goldfuss. 
Productella productoides (Murchiscn). 
Stopheodonta interstrialis (Phillips). 
Atrypa reticularis L. 
Atrypa aspera Schlotheim. 
Pugnax pugnus (Martin). 
Paracylas antiqua (Goldfuss). 
Murchisonia turbinata Schlotheim. 
Euomphalus annulatus Phillips. 
Loxonema priscum Munster. 
Marcrochilina subcostata (Schlotheim). 
The Stringocephalus limestone of Manitoba would seem to 
occupy much the same stratigraphical position as that of 
Devonshire, Rhenish Prussia and Belgium, and its fossils show 
that it is probably their homotaxial equivalent. 
Immediately above the Stringocephalus zone in Manitoba 
there are beds which may possibly represent the Cuboides 
zone, although Rhynchonella, or, as it is now called, Hypothy- 
ris cuboides, has not yet been found in them. The prevalent 
fossils in these beds are Cyathophyllum dianthus and C. 
vermiculare, var. prsecursor (teste Freeh) ; Chonetes logani 
var. Aurora, Productella subaculeata, Orthis striatula, Stro- 
pheodonta arcuata ; and Cyrtina hamiltonensis, which the Rev. 
G. F. Whidborne has recently asserted is the same as the Eu- 
ropean C. heteroclita. 
Regarding the fossils of the Manitoba Devonian as a whole, 
it is to be noted that it is not the corals, nor the Polyzoa (or 
Bryozoa), nor the Brachiopoda that have as yet yielded the 
largest number of species (as they have in Ontario), but the 
Gasteropoda and Pelecypoda. 
From the northern end of lake Winnipegosis the Devonian 
rocks extend into the immediately adjacent district of 
Saskatchewan. 
