Lorraine Faunas of New York and Quebec 309 
of Archinacella orhiculata, Hall/ but the beak is less incurved, the 
concentric striations are finer, and there is an absence of the 
stronger, nearly equidistant lines of growth shown by both of Halhs 
types. Compared with Archinacella subrotunda, the shell is dis- 
tinctly longer. The form here described from the Lowville is 
probably an undescribed species. 
Locality. From the basal red clay shales of the Lowville, on 
the western shore of La Cloche peninsula, a short distance above 
railroad level. Collected in 1912 by Aug. F. Foerste, and pre- 
served in the Victoria Memorial Museum, at Ottawa, by the 
Geological Survey of Canada. No. 8418. 
42. Archinacella pulaskiensis, sp. nov. 
{Plate III, Figs. 3 A, B, C, D) 
Paleontology of New York, vol. i, Plate 83, Figs. 7a, 7b 
The form figured by Hall from the Lorraine at Pulaski, New 
York, as Archinacella patelliformis, differs in outline from his 
Trenton types, which were derived from the dark, compact, 
Trenton limestone at Middleville, New York. This shell is 
broader and more convex along the middle and the outline, there- 
fore, is rather broadly ovate than ovate oblong. Otherwise the 
two shells are closely similar. The beak extends almost or fully 
as far forward as the anterior margin of the shell. It overhangs 
this margin by an anterior slope which on lateral view is not so 
strongly concave. The beak is rather pointed, especially when 
viewed from above, and there is a tendency toward carination for 
a moderate distance posterior to the beak. The highest part of the 
shell is about five-twelfths of the length of the shell from the 
anterior margin. The shell is smooth, surface striations being 
faint or absent. 
The type of the species occurs in the same rock with Modio- 
lopsis modiolaris, Byssonychia radiata, Hormotoma gracilis, Dal- 
manella, and Glyptocrinus columnals. 
This species occurs at the Trinucleus horizon, several hundred 
yards west of the railroad bridge across the river, east of Pulaski. 
It is found also northeast of the bridge within the limits of Lor- 
raine village, and along the creek within the boundaries of Barnes 
^ The Lower Siluric Shales of the Mohawk Valley, Bulletin 162 of New York 
State Museum, plate 7, Fig. 6. 
