274 PALEONTOLOGY OF NEW-YORK. 
331, 12. GRAPTOLITHUS SERRATULUS (n. sp.). 
Pui. LXXIV. Figs. 5 a, b. 
Stipe straight, slender, almost filiform, widely diverging from an acute point (the 
base?) ; upper or inner edge serrated; teeth triangular, distant nearly the width of the 
stipe ; serratures nearly as deep as half the width of the stipe. 
This species closely resembles the G. sagittarius, but differs in the greater obliquity of 
the serratures and the distance of the points of the teeth, which are, in this specimen, 
equal to that species where the stipe is more than twice as wide. This character may prove 
sufficiently distinctive to identify small fragments of the two species. 
Fig. 5 a. A specimen of the natural size, diverging from a slender smooth spine or mucronate radicle 
below, 
Fig. 5 b. A portion magnified, showing the form and opposite direction of the serratures at the base. 
Position and locality. This is found, associated with several of the preceding species, in 
the black slates at Norman’s kill, near Albany. 
332. 13. GRAPTOLITHUS GRACILIS (n. sp.). 
Pi. LXXIV. Figs. 6 a, b, c, d. 
Stipe very slender, branching from one or both sides; branches slender, gradually 
enlarging, sometimes dividing, distinctly serrate; serratures oblique; teeth distant, ap- 
pressed, or scarcely distinguishable above the outline of the branches. 
This is much the most slender and graceful species among the Graptolites. In the 
examination of a large number of specimens, I have not been able to learn that the 
principle stipe is serrated, though the branches are distinctly so on one side. 
Figs. 6 a, b. Two specimens, natural size, showing the principal stipe and branches, one of the latter 
being subdivided. 
Fig. 6 c. A specimen in which the principal stipe is obscure; several branches are subdivided. 
Fig. 6 d. A fragment magnified, showing the serratures of the branches. 
o 
Position and locality. This species is only known to me in the black slates on the 
Norman’s kill, near Albany. 
333. 14. GRAPTOLITHUS? LAEVIS (2. sp.). 
Pu, LXXIV. Fig. 7. 
Stipe slender, linear, flexuous, smooth on both margins ; not branched. 
This fossil presents the same appearance as the Graptolites, and occurs in the same 
position. I have several specimens, all presenting a uniform character ; and from its being 
of common occurrence, I have figured it in this connection. 
Position and locality. In the Utica slate, at Turin, in Lewis county. 
