362 
PALEONTOLOGY OF NEW YORK. 
Spirifer Newberryi, Hall. 1883. 
(See Report State Geologist for 1882, Plate (xxxi) 56, Figs. 9, 10). 
PLATE XXXI, FIGS. 9, 10. 
Shell moderately large, with sharp cardinal angles. Surface plication con¬ 
sisting of numerous fine simple or duplicate ribs which cover the median fold. 
On each lateral slope there are twenty-five to thirty of these plications. The 
plications and the grooves between them are covered with fine radiating lines. 
Waverly group. Ohio. 
Cyrtia radians, sp. nov. 
PLATES XXVni, FIGS. 4, 5, 50, 62 ; XXXIX, FIG. 33. 
The typical form is of medium size, with high area, incurved umbo and gen¬ 
eral cyrtiniform aspect. Its outer surface is characterized by an absence of 
plications and fine radial striie. Median fold and sinus well developed. 
Clinton group. Rochester, N. Y. 
An allied but larger form, here referred to this species, occurs in the Niagara 
dolomites, near Milwaukee, Wisconsin. 
Cyrtina umbonata. Hall, var. Alpenensis, var. nov. 
PLATE XXVIII, FIGS. 1&-20. 
Cyrtina umbonata, Hall, from the original locality in Iowa, is a small shell, 
often obscurely plicated; this variety possesses the contour of C. umbonata, but 
is a larger and more robust shell with broad and well-defined plications, smooth 
median fold and sinus. 
Hamilton group. Alpena, Michigan. 
Cyrtina lachrymosa, sp. nov. 
PLATE XXVIII, FIGS. 36, 37, 47. 
Shells small; cardinal area high, more or less incurved. Surface with low 
and rather narrow median fold and sinus, on each side of which are two or three 
low, faint plications. Lateral margins of the cardinal area broadly rounded. 
