63 



•diverge from the keel forwards and outwards, forming with the keel 

 an angle of about 45'^. Transverse diameter of the aperture of a large 

 fipecimen, eighteen lines ; vertical diameter (from the dorsal side of the 

 .aperture to the opposite side of the shell) about the same. 



Locality and Formation- — Indian Cove, Gaspe ; limestone No- 8. 



Collector.— Bell. 



CRUSTACEA. 

 Proetus phociox. (N. sp.) • 



Fig. "il.— Proetus Phocion. In this figure the neck-farrow is a little too far behind the 

 eves. 



Description. — Oblong-ovate ; both extremities uniformly rounded, the 

 pygidium more broadly so than the head ; sides of the thorax parallel , 

 The head is rather strongly convex, semi-elliptical ; its length a little 

 greater than half its width at the base ; front smoothly rounded ; sides 

 gently curved ; posterior angles with very short spines. The marginal 

 border is well developed : it has a shallow median groove which is most 

 distinct around the front, and down the sides, but dies out on approaching 

 the posterior angles of the head ; the border is separated from the cheeks 

 by a distinct groove, which runs all around the sides and front of the head, 

 touching the front of the glabella in specimens with the crust preserved- 

 When the crust is not preserved, the front of the glabella, as seen in the 

 cast, does not quite reach the cast of the groove- Glabella regularly 

 conical, about one-seventh shorter than the head, convex, most elevated 

 between the eyes. There are indications of glabellar furrows, but they are 

 too indistinctly seen in the specimens to be located with certainty, x^eck- 

 furrow crossing the glabella, very nearly on (but a little behind) a line 

 connecting the posterior corners of the eyes. It is nearly straight for 

 about one half of its length in the middle, and then tur.is forward, slightly, 

 at each end to the eye. The neck-segment has a small tubercle in the 



