AND DEVONIAN CONODONTS. 361 
of Genesee Shale. Also from North Evans, New York, in Genesee 
Shale. 
Priontopus spicatus, Hinde. (Pl. XVI. figs. 1, 2, 3.) 
Basal portion straight, narrow, and convex; at one extremity a 
straight or slightly curved main tooth which is produced below the 
horizontal base to a pointed projection. A variable number of 
straight slender denticles are present on the base, and between 
these are intercalated still smaller denticles. Length of base 3? 
line, of main tooth 3 line to 3 line. 
Loc. Bear Creek, Ontario; North Evans, New York: Genesco 
Shale. 
Priontopus Panprri, Hinde. (PI. XVI. fig. 4.) 
A relatively very large, slightly curved, depressed convex main 
tooth springs from one extremity of the narrow horizontal base; at- 
tached to the base of the main tooth, and extending downwards, is a 
prominent spike-like projection, which has on its upper surface the 
bases of what appear to have been four stout denticles ; on the hori- 
zontal base are the lower portions of six denticles. Length of the 
large tooth 1% line, of the projection 3 line, and of the base line. 
This species is allied to P. tulenses, Pander (Monograph. p. 30, 
tab. 2a. fig. 19) which has also a somewhat similar produced spike 
below the main tooth, with a single denticle on it. P. tulensis is 
from the Carboniferous Limestone in the province of Tula, Russia. 
I have named this species in memory of Dr. Pander, the first dis- 
coverer of Conodonts. 
Loc. Kettle Point, Ontario: Genesee Shale. Also from North 
Eyans, New York: in the “ Conodont-bed ” of the Hamilton group. 
Prionropus? atatus, Hinde. (Pl. XVI. fig. 5.) 
A comparatively large, triangular, depressed convex main tooth 
with a narrow arched base, one arm of which is produced obliquely 
downwards and carries five, short, blunted denticulations on the ex- 
terior edge. This tooth varies greatly from the more typical forms 
of Prioniodus, in its triangular form and in having the basal portion 
but very indistinctly marked off from the tooth itself; the smaller 
denticulations have also the appearance of being only prolongations 
of the thin border of the main tooth. Length 1% line, greatest 
width ? line. 
Loc. North Evans, New York: in the “ Conodont-bed” of the 
Hamilton group. 
Genus Potyenatuus, Hinde, nov. gen. 
I propose this genus for an animal possessing numerous minute 
and variously formed Conodont teeth and similarly minute tuber- 
culated plates grouped together, but of which the natural arrange- 
ment is not at present known. 
This meagre definition is all thatis afforded by the single example 
of the genus met with, in which about twenty-four entire and frag- 
