291 



Associated with this pygidium is a glabella, which may possibly belong 

 to it. It is strongly convex ; front rounded ; neck furrow all across ; 

 two pairs of glabellar furrows, inclining a little backwards and extending 

 inwards about one fourth the width or a little more. 



Length of the glabella 2i lines ; width 2 lines. 



Locality and Formation. — G, Port aux Choix, Newfoundland ; Quebec 

 group. 



Collector. — J. Richardson. 



Triarthrus Fischeri. (N. sp.) 



Fig. 280. 

 Fig. 280. — Triarthrus Fischeri. The glabella and fixed cheeks. 



Description. — This species has the form of those common in the Utica 

 slate. From T. BecTcii it differs in being destitute of the tubercles along 

 the median line of the axis ; from T. fipinosus in the absence of the spines 

 at the head and thorax ; from T. Canadensis also in being destitute of 

 spines ; and from T. glaher in having the eyes more distant from the gla- 

 bella. It seems to be smaller than the species above compared, none of 

 the specimens indicating a length of more than eight lines. 



Locality and Formation — N, Table Head and Pistolet Bay ; P, Port- 

 land Greek, Newfoundland ; Quebec group. 



Collector. — J. Richardson. 



Telephus Americanus. (N. sp.) 



s^ 



Fig. 281. 



Fig. 283. 



Fig. 281. — Telephus Americanus. The glabella. 



282. — Encrinurus inirus. Glabella and pygidium. 

 283. — Remoplcurides Panderi. The glabella. 



Description. — Glabella obtusely conical, length one sixth greater than 

 the width, rather strongly convex ; front uniformly rounded ; sides parallel ; 

 neck segment and furrow forming nearly one third of the whole length ; 

 the furroAY narrow and extending all across. The fixed cheeks are cres- 



