[MATTHEW] ORGANIC REMAINS OF LITTLE RIVER GROUP MT | 
that this type belongs to another order for which the name Eurymarti is 
proposed. The following are its distinctive features : 
Order EURYMARTI. 
Body depressed, Cephalothorax and abdomen of equal width, not 
clearly divided, Coxe crowded in two rows distant from each other, 
converging forward. Abdomen forming a single mass of seven to nine 
segments sub-equal in width. 
Family EURYMARTIDÆ. 
Distinguished from Architarboide as follows : 
Cephalothorax less than half of the length of the abdomen. Coxe 
spreading from a broad trapezoidal space on the thorax. Abdomen oval, 
segments sub-equal in width. 
From the genus Anthracomartus, its nearest ally, Eurymartus, is dis- 
tinguished by its smaller but broad cephalothorax, obtusely triangular in 
front. Also by its oval abdomen nearly uniform in outline with the 
cephalothorax. 
EURYMARTUS, sp. ? Pl. IL., Fig. 8. 
This very defective fossil is referred to the Arachnida on account of 
its resemblance to the abdomen of Eurymartus. 
It consists of seven or more cemented segments. Of these the two 
anterior are separated by a stronger line of demarkation from the 
others, than the lines of division between these latter. The first segment 
is narrow (longitudinally) and is terminated at each end by a spine pro- 
jecting backward ; it has on the front edges a facet about half its length, 
apparently for the articulation of the cephalothorax. The remaining 
rings of the abdomen are apparently of about equal width. The second, 
third and fourth rings have lateral spines directed backward ; those on 
the third ring are heavier than those on the rings in front. The rings 
behind the fourth do not show spines, but this may be due to the imper- 
fect preservation of the fossil, as the posterior part of the abdomen is 
broken away. The sixth ring has a tubercle on the median line. 
Sculpture.—The surface has a fine granulation, just visible to the 
naked eye. 
Size.—Length of the part preserved 4 mm. Width 7 mm. 
Horizon and Locality.—Dark shale of Plant Bed No. 8, Lower Cor- 
daite Shales, Little River Group, St. John, N.B. Rare. 
This peculiar fossil has some resemblance to the pleon of an Isopod, 
but differs in the following respects : The number of segments is in excess 
of those in that part of an Isopod, and they are narrower than such seg- 
ments ; they are also anchylosed, for the divisional lines are obscure. 
