72 



* \) 



developed. The eyes, shown by the form of the lobe, appear to have- 

 been semi-annular and about one-third the length of the head. The 

 surface appears to be smooth. The following are the dimensions of the 

 best preserved specimen : 



Length of the head, including the large posterior projection, six lines ; 

 width of the convex marginal rim, one line ; width of the groove between 

 the rim and the front of the glabella, one-third of a Hne ; length of the 

 glabella including the projection, five and two-thirds lines ; width of the 

 glabella at the posterior margin, three lines ; width of the fixed cheek 

 from the centre of the edge of the eye-lobe to the side of the glabella, two 

 lines. A line drawn across the head at two and a quarter lines from 

 the front margin would pass through the anterior angles of the eyes. The 

 length of the eye appears to be nearly two lines. 



As above remarked , this species varies somewhat in its proportional 

 length and width, and hence the dimensions, above given, would not be 

 found to be exactly parallel in all the specimens. 



Occurs in the grey limestone of Topsail Head and also in the pinkish 

 limestone of Brigus, Conception Bay. 



Agraulos affinis. (N. sp.) 



Dcscripiion. — This species is closely alHed to A. sociaVis and is of the 

 same size, but dififers in the following respects. The glabella is broader, 

 and with the sides gently convex. The eyes are somewhat nearer the 

 sides of the glabella. The whole of the anterior portion in front of the 

 glabella is convex. The dorsal furrows are more distinctly impressed all 

 around the glabella. 



It occurs at Branch, St. Mary's Bay. 



Genus Conocepalites. 



This genus has been used as a general receptacle for a number of 

 groups which, according to several authors, constitute distinct genera. 

 Although it has been found very convenient, there has lately sprung up a 

 disposition to dispense with it altogether. I have no doubt but that this 

 will be done, and I shall therefore dispose of our species as follows. 



SOLENOPLEURA COMMUNIS. (N. sp.) 



Bescriiition. — Glabella conical, convex, about two-thirds the whole 

 lensrth of the head, about one-third wider at the neck-furrows than at the 

 front : on a side view considerably elevated above the fixed cheeks : 



