226 
PALEONTOLOGY OF NEW YORK. 
The following American species of Orthoceras, Ormoceras, Actinoceras, 
Endoceras and Huronia, from Newfoundland, Canada, the island of Anticosti 
and the United States, have been described and illustrated by M. Barrande 
(Syst. Silurien du centre de la Boheme): 
SPECIES. 
Silurian Fauna. 
Localities. 
Plates. 
I. 
II. 
III. 
Orthoceras, Breynius: 
abnonne, Hall 
. 
* 
Racine, Wis. .... 
456 
Allumettense, Bill. 
* 
Allumette Island, Can. 
437 
Anticostiense, Bill. . 
* 
Saguenay riven, near Lake St. John, 
434 
Clouei, Barr. 
* 
Newfoundland . . . . 
432-434 
recedens, Barr. 
* 
Newfoundland .... 
433 
rotulatum, Bill. . 
* 
Temiscamang, Can. . 
433 
sp. indet., Bill. 
* 1 
Ottawa, Can. .... 
220 
sp. indet., de Verneuil . 
*? 
On the Ohio river 
21(3 
Orthoceras = Ormoceras, Stokes: 
Backii, Stokes 
Drummond Island, Lake Huron . 
437 
Bayiieldi, Stokes 
* 
Drummond Isl., Lake Huron 
231 
crebriseptum, Hall 
* 
Pulaski, N. Y., and Canada . 
431 
Orthoceras = Actinoceras, Broun: 
Bigsbyi, Stokes 
* 
Thessalon Island, Lake Huron, Can., 
231. 437 
sp., Broun .... 
* 
. . . . . t 
231 
Richardsoni l Casteln. 
* 
Manitoulin Isl., Lake Huron, Can., 
234 
sp. (siphon), Saemann . 
* 
North America 
232 
Subgenus Endoceras, Hall: 
Atlauticum, Barr. 
* 
Newfoundland .... 
430 
insulare, Barr. 
* 
Newfoundland .... 
430, 431 
Marcoui, Barr. 
* 
Phillipsburg, Can. 
431 
sp. (siphon) 
* 
Phillipsburg. Can. 
431 
Rottennundi, Barr. 
. 
* 
Islands in Lake Huron . 
220 
longissinnun, Hall 
* 
Watertown .... 
236 
sp. indet. .... 
* 
United States .... 
236 
Subgenus IIuronia, Stokes: 
Bigsbyi, Stokes 
* 
Drummond Island 
436 
minuens, Barr 
* 
Drummond Island 
435 
distincta, Barr. 
North America .... 
431 
Portlocki, Stokes 
* 
Drummond Island 
232 
Romingeri, Barr. 
* 
Point Detour, Mich. . 
sphseroidalis, Stokes 
* 
Drummond Island .... 
sp , Stokes .... 
* 
North America .... 
231 
vertebralis, Stokes . . . \ 
l Drummond Island and Anti- \ 
231 
=Canadense, Bill. . . ) 
* 
\ costi . . . . . j 
435, 436 
After a review of all the literature upon the Orthocerata, and a final revision 
of the generic and subgeneric relations of Orthoceras, M. Barrande has pre¬ 
sented the following tabular view in his Systeme Silurien du centre de la Boheme. 
I accept for the present this arrangement, hoping at some future time to be 
able to prepare a revision of the Lower Silurian forms of Orthoceras, Endo¬ 
ceras, etc., with better means of comparison and illustration than heretofore 
possessed. 
