Canada 
Geological Survey 
Victoria Memorial Museum 
BULLETIN No. 1 
VI . — Description of Some New Asaphidce. 
By Percy E. Raymond. 
Family Asaphidce, Emmrich. 
Sub-Family Ogygin,e, Raymond. 
Genus Hemigyraspis, Raymond. 
Hemigyrasfis mcconnelli sp. nov. 
Plate IV, fig. 4, 
This specimen was figured as Hemigyraspis sp. ind. in a recent 
paper in the Transactions of the Royal Society of Canada, 
Vol. V, 1912. The type is a fairly complete hut distorted 
specimen, and the collection contains other fragments which 
are presumably of the same species. 
Description. 
Entire body broadly oval, cephaion and pygidium semi- 
circular, general surface relatively smooth, axial lobe about 
one-third the total width, genal angles extended into long spines. 
Cephaion nearly semicircular in outline, with a low obscurely 
defined glabella. Eyes of medium size for an asaphid, about 
their own length from the posterior margin. 
Thorax of eight smooth segments which are pointed at their 
distal ends. 
Pygidium semicircular in outline, depressed convex. On the 
type the axial lobe is very well defined,but that may be due to 
the crushing of the specimen. 
