Lorraine Faunas of New York and Quebec 303 
pared with the specimens figured by Hall from Turin, the Pu- 
laski forms are relatively longer and hence are more convex along 
the anterior and posterior outlines. 
It will be noted that all of the specimens of CUdophorus planula- 
tus, from Turin, were figured by Hall as having more oblique 
clavicular adductor supports anterior to the beak. Figs. 96, c, d, 
represent specimens imbedded in the shale. Of these, only speci- 
men 9d presents a very oblique clavicle, approximately 55 de- 
grees, while the original of Figs. 96 and 9c show angles as steep 
as 75 to nearly 80 degrees. Fig. 9a, although described as com- 
ing from arenaceous slate, may have come from about the same 
horizon as the shale specimens, since thin arenaceous layers often 
are interbedded in the Lorraine shale. This horizon may be 
lower than that of the type locality, in the river bed east of Pu- 
laski. It is evident from the figure that the rock fragment con- 
tained also Trinucleus, Zygospira, and columnals of Heterocrinus 
and Glyptocrinus. Similar specimens, with more oblique clavic- 
ular adductor supports occur also at Rome, New York. One 
of these specimens, taken from the series numbered R-1232 in 
the State Museum, at Albany, New York, is here represented 
by Fig. 13, on plate I. It is not certain, however, whether these 
specimens with the more oblique clavicular adductor support 
impressions should be regarded as distinct from the forms with 
more vertical impressions. Occasional specimens from the type 
locality, east of Pulaski, also have very oblique clavicular ad- 
ductor supports, forming angles of 65 degrees with the longitudi- 
nal axis of the shell. This angle may vary in different individuals 
of the same species. 
36. Clidophorus praevolutus, sp. nov. 
{Plate I, Fig. 12, type; two figures under 6, cotypes) 
Transversely elliptical; length 11.5 mm.; height 5.2 mm.; ends 
narrowly rounded. Anteriorly the shell extends 3.5 mm. in front 
of the beak; here the cardinal outline is comparatively straight 
and forms an angle of about 165 degrees with the hinge-line back of 
the beak. Posteriorly there is a narrow concave subalate cardinal 
slope, scarcely a millimeter wide at its posterior end; along this 
part of the shell the hinge-line is straight for a distance of about 
5 to 6 mm. and then joins the upper part of the posterior margin 
