248 Canadian Record of Science. 
genus would have been, and thus are of value to the 
paleontologist. 
Perhaps the most important of these. was the finding of 
material representing an interesting and, | think, hitherto 
unrecognized generic group of trilobites, whose species 
seem to have given some difficulty to the geologists who 
discovered them. These species have been referred with 
doubt to three several genera by the authors who described 
them, but in none of the three do I think they can be in- 
cluded. 
The writer proposes first to describe the new genus and 
two species of another genus of this Band, and then endea- 
vour to correlate the forms with those of other regions. 
PROTOLENUS! Matt. 
(Natural History Society of New Brunswick, Bulletin X.) 
Head-shield semicircular, moderately vaulted, outer part 
of the cheek movable, prolonged at the genal angle into a 
spine. 
Middle piece of the head more or less quadrate. Anterior 
margin wide and having a narrow distinct fold at the rim. 
Glabella conical, or cylindro-conical, prominent, marked by 
furrows on the sides. Occipital ring distinct, separated 
from the glabella by a furrow. Fixed cheek of variable 
width, bordered by a long, continuous or nearly continuous 
eyelobe. Extension of the dorsal suture, both in front of 
the eye and behind it, more or less direct to the margin. 
Movable cheek regularly curved, area wider than the dis- 
tinct fold, spine usually long. 
Thorax of many joints, pleure grooved for a part of their 
length, slightly geniculate, curved backward in the outer 
part, extended into points or spines. 
Pygidium in the Canadian species unknown (smail ?), in 
the Sardinian species like that of Paradoxides. 
This genus belongs to the family of Olenide, and its most 
obvious features are the long conical glabella, the long con- 
1 Protos first, olenus as one of the Olenidx. 
