The Devonian System in Canada, — IV/iiteaves. 219 
"Two species of land snails have also been found, raising 
the number of air-breathing- animals found in the plant-beds 
at St. John to twenty-one kinds." 
Elsewhere in this paper Dr. Matthew says that "later dis- 
coveries lead the author to think that Eurypterus pulicaris. 
Salter, should be referred to the myriapods or to the insects," 
and in the foregoing list it is evidently included with the in- 
sects. To this list also should be added a trilobite and an 
annelid (Spirorbis erianus, Dawson), which indicate marine 
or at least brackish water conditions, while from the descrip- 
tion and figures it is difficult to see in what respects the very 
imperfect specimen described as a land shell under the name 
Strophites (since changed to Strophella) grandoeva, differs 
from the presumably marine genus Macrocheilus. 
Detailed descriptions of the stratigraphical relations of the 
presumed Devonian rocks near St. John, by Dr. Matthew, 
were published in 1863* and 1865,! and many additional facts 
in relation thereto are contained in professor Bailey's report 
on the Geology of Southern New Brunswick published in 1865. 
In 1863 Dr. Matthew gave the local and provisional names of 
the Mispec, Little River and Bloomsbury groups to the sub- 
divisions of the supposed Devonian system in St. John county, 
the Little River group including both the Cordaites shales at 
the Fern Ledges, with their numerous fossil plants, insects, 
etc., and the Dadoxylon sandstone. The Little River group 
was at first supposed to be of Upper Devonian age, but in con- 
sequence of the investigations of professor Bailey and Dr. 
Matthew in 1870, Sir William Dawson, in 1871, expressed the 
opinion that the Mispec group represents the LIpper Devonian, 
the Little River group the A'liddle Devonian, and the Lower 
Conglomerates (presumably the Bloomsbury group) the Low- 
er Devonian. Matthew, in 1888, after stating that there is 
one unconformity between the Perry sandstone and the Mispec 
beds, and another between the Mispec beds and the Cordaite 
shales, thus re-divides the Devonian rocks of St. John county, 
the unconformities being marked by a dividing line. 
*Canadian Naturalist and Geologist, vol. VIII, pp. 241-25Q. 
tQuarterlv Journal of the Geological Society of London, vol. XXI. 
jip. 429-30- 
