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VICTORIA MEMORIAL MUSEUM. BULLETIN NO. I 
(3.) Crinoid beds at Ottawa. A number of specimens of Cyclo- 
cystoides halli, Billings, have been found at this horizon, but it is 
probable that the types came from the Cystid zone, higher in the 
section. The same species has been found at this horizon at 
Kirkfield, Ontario, and one of the specimens from that locality 
is described in more detail on a later page. The Crinoid zone 
at Ottawa includes the strata between 40 and 100 feet above the 
base of the Trenton. 
(4.) Prasopora zone at Ottawa. So far as the writer knows, 
only a single specimen has been found at this horizon, and that 
is the one described later in this paper. 
(5.) Cystid zone, Ottawa. A number of specimens, probably 
including the types of Cyclocystoides halli , have been found at this 
horizon. The Cystid zone at Ottawa includes all the strata 
between 75 and 150 feet below the top of the Trenton, and the 
Prasopora bed includes the 25 feet of strata below the Cystid 
bed. 
(6.) In shaly strata near Saratoga, New York,, Hall obtained the 
specimen which he described as Cydocystoides salteri , His speci- 
men is about 18 mm. in diameter, has 26 sub-marginal plates, and 
shows a border of minute plates outside the sub-marginal ring. 
It is exposed from the upper side, and seems to have weathered 
in such a way as to retain some of the features of both sides of the 
disk. 
(7.) Upper part of the Trenton, or base of the “ Hudson River” 
on the Escanaba river, Michigan. This locality yielded the very 
imperfect specimen to which Hall applied the name C. ante - 
ceptus. This specimen showed merely the sub-marginal ring of 
29 plates. 
(8.) The “upper part of the Cincinnati group” at Morrow, 
Ohio, furnished Miller and Dyer material (4 specimens) for 
describing the following species: C. magnus , 20 plates in the 
ring; C. minus , 19 plates; C. parvus , 26 plates; C. mundulus, 32 
plates. They described a fifth species, C. hellulus , from a speci- 
men found at Cincinnati. All these specimens were badly pre- 
served, and the number of plates in the sub-marginal ring is 
relied upon to distinguish the species. 
In a later paper Miller gave a better description of C. magnus, 
from a specimen found at Waynesville, Ohio. This specimen 
