Classificutton of Cambrian Rocks. 315 
In Europe, Olenelloid trilobites are again met with, but 
here, apparently, Dorypyge has not been found. 
Taking this older phase of the Olenellus fauna as a basis, 
the two parellel series of trilobites may be represented in 
the following diagram :— 
North Pacific Basin. | North Atlantic Basin. 
3. Upper Cambrian-Dikellocephalus-Ctenopyge fauna, 3. 
2 Middle Passage beds to elite fav ain ese ere ole : \ x 
(Gepeacnees Upper Cambrian. f Olenus fauna......... ra 
1 OlenelleusBathyuriscus fauna. Paradoxides fauna...... hi 
Lower Cambrian....... Olenellus—Dorypyge fauna 
This diagram is to be taken only as a suggestion of the 
possible relations of the Cambrian faunas on the two sides 
of the American continent, and is based upon our present 
knowledge. Paradoxides has been reported from Minnesota 
and from the Rocky Mountains on the line of the Canadian 
Pacific Railway; but imperfect examples of Olenellus and 
its allied genera so nearly resemble Paradoxides, that they 
are easily mistaken for it. They are distinguishable from 
Paradoxides by a decidedly reticulate ornamentation of 
raised lines on the surface of the crust, for in Paradoxides 
the lines are more or less parallel to each other. 
Norges ON THE FLORA OF MONTEBELLO, QUEBEC, 
ESTATE OF THE Hon. Mr. PAPINEAU. 
By Henry R,. Amt, M.A., Cor. Mem. Torrey Botan. Club. 
At the Annual Field-day, held under the auspices of the 
Natural History Society of Montreal, on the 16th day of 
June, 1888, at Montebello, the various members of that 
Society had an excellent opportunity offered them, of ex- 
amining the more salient characteristics of the natural 
phenomena existing in that locality. In and around the 
spacious grounds and estates of the Hon. Mr, L. J. Papineau, 
