94 The American Geologist. August. i89i 
American species does not become carinate nor evince an appreciable 
degree of variation in a large number of specimens. It is the predom- 
inant goniatite of the fauna. 
Gonuititcs slnuosiin Hall. Specimens of G. intmnescens vv^hich have been 
exposed to weathering since fossiiiation or to maceration before it, often 
exhibit peculiar modifications of the septa. The specimens found in the 
thin sandy layers or tlags are usually thus modified and in some of their 
conditions are similar both in exterior and septum to those which have been 
described as (?. sirmosns and G. numluius. I am at present inclined to 
believe that G. sitiuosus is only a condition of O. intumescenM resulting 
from modification by mechanical and post-vital influences. The species 
known in the Intumescens-kalk of the Iberg-VVinterberg, Hartz, and 
Adorf in Waldeck, as G. earinntus Beyrich, is, in every respect simi- 
lar to G. intuniescciis save in the fact that the lower lateral lobe is 
rounded instead of acute. This, liowever, is a feature which character- 
izes an undeveloped condition of G. intumesccns, as shown by Uolzapfel 
and myself, and it is questionable if the forms can be properly separated 
on such a basis. 
Goniatites uniangliiaris Conrad. One of the Simplices, very closely 
allied to G. retrorsus simplex. 
Goniatltes bieostatus Hall. Another member of the same group. 
GoHiatitcs lutheri Clarke. One of the Primordiales with sharp lateral 
saddle. I know no species with whicli this may be directly compared. 
Goniatltes complanatus Hall. This species was originally described 
as Clymenlaf complmmta \n the Report on the Geology of the Fourth 
District of New York ; the ligure accompanying the first description 
gave only tlie exterior of a flattened specimen having the same expres- 
sion and degree of umbilication as G. lutheri. The subsequent illustra- 
tions and description of specimens referred to this species in volume v of 
the Pahcontology of New York, show a septum like that of the Simpli- 
ces and totally different from that of G. lutheri. I have been unable to 
discover the original specimen of G. comphiiuitus either in the New York 
State Museum or the American Museum in New York city, and without 
it, it will be impossible to determine the value of the species. The 
designation complanatus may under the circumstances properly be 
applied to such goniatites as show the suture referred to, and must bo 
limited to such. However, no goniatite of this character is known to 
me in this fauna. 
Goniatltes chcmungensis Hall, var. Clarke. The single specimen is 
from the lower black shales and shows no suture : sliould it prove to bo 
allied to G. chemuwjensls it may be regarded as a respresentative of the 
Irregulares. 
Goniatites sp. nov. A very large representative of the Nautilini, 
closely allied to O. Roemerl Holzapfel (Adorf). See Gon. (b), Styliola 
layer. 
GoniAititcs sp. With a broad, grooved and rounded dorsum ; in exter- 
nal characters it may be compared to G. cvexus von Buch ; internal 
characters not known. 
Goniatites sp. (G. sp. nov. (a) Styliola layer). A primordial species 
