DESCRIPTION OP SOME NEW ASAPHIDjE 
43 
The species is well described and figured by Hall, and we have 
to accept the name. Whether or not it is entirely to supersede 
Asaphus romingeri is a question. The writer is unable to point 
out any very important differences between the eastern and 
western forms, except that the eastern specimens seem to be 
somewhat less convex. There are a few imperfect speci - 
mens of the * western form in the Museum of the Geological 
Survey, Canada, two of the best of which are figured. The 
pygidium was collected at Gravel point, St. Joseph island, Lake 
Huron, by the late T. C. Weston, and the partial cranidium is 
from the “east side of St. Joseph island,” and was also col- 
lected by Weston. 
Genus Ogygites, Trome'lin and Lebesconte. 
Ogygites canadensis, Chapman. 
Plate VI, fig. 1. 
Cf. Asaphus ? laiimarginatus, Hall, 1847, Palaeontology New 
York, Yol. I, p. 253, PL 66, figs. 4 a~b. 
Asaphus canadensis , Chapman, 1856. Canadian Journal, 
Voi. I, p.482; Ibidem, Yol. II, 1858, p. 47; Ibidem, 
Vol. III, 1858, p. 230, fig.; Ibidem, Yol. IY, 1859, 
p. 1, fig. Annals and Magazine Natural History, 3d 
series, Yol. II, p. 9, fig. 1, 1859. 
Asaphus halli , Chapman, 1859. Canadian Journal, Yol. Ill, 
p. 236, fig. Annals Magazine Natural History, 1859, 
series 3, Vol. II, p. 14, fig. 2. 
Asaphus hinksii , Chapman, 1859. Canadian Journal, Vol. 
IY, p. 2, fig. 
Basilicus canadensis, Raymond, 1910, Annals Carnegie Mu- 
seum, Yol. VII, p. 62. 
Ogygites canadensis, Raymond, 1912. Transactions Royal 
Society of Canada, series 4, Vol. V (in explanation of 
plates). 
Mr. Elfric Drew Ingall, of the Geological Survey, was so 
fortunate this summer as to discover a very well preserved 
