48 
VICTORIA MEMORIAL MUSEUM. BULLETIN NO. I 
for a Brachyaspis . In this connexion it should be noted that 
Salter’s restored figure of Brachyaspis in “British Silurian 
Trilobites,” p. 167, is very inaccurate in this particular, and 
does not agree with his own description of the type-species 
( B . recfifrons , Portlock). He says that the body-rings show a 
“very broad axis, much wider than the pleura,” but in the 
figure the axial lobe is represented as being about one-third the 
total width of the thorax. 
Description. 
Entire animal oval, with semi-circular head and abdomen 
shields. Axial lobe of thorax wide (one-half the total width). 
Cephalon short, genal angles rounded, spineless, eyes large, 
high, less than their own length from the posterior margin of 
the cephalon. Profile of the cephalon one-fourth of a circle, no 
depressed border being present. In front of the eyes, the facial 
sutures reach the margin just before they imite in front, but 
are not so strictly marginal as in B. alacer and B . notans. 
Pygidium semicircular, regularly convex, without depressed 
border. The axial lobe is faintly indicated, otherwise the sur- 
face is smooth. 
The measurements of the type are: total length about 30 mm.; 
width, 19 mm. ; width axial lobe of thorax, 10 mm. ; length 
cephalon, 10 mm.; width, 19 mm,; distance between eyes, 
8 '5 mm. A more complete but smaller specimen is 20 mm. 
long and 14 mm. wide. 
Locality .- — The specimens are from the Richmond at English 
head, Anticosti. The type is number 2161 in the collection 
at the Geological Survey, Canada. 
