223 



.AGNOSTUS, cf. var. DECLIVIS. 



of. Agnostus Acadicus, var. declivis. Trans. Roy. 

 Soc. Can. vol. iii, sec. iv. p. 70, pi. vii, figs. 6 a and b. 



A small species of the Limbatus section of the genus Agnostus, occurs A^nostus cf. 

 at the Peltura locality on McNeil brook. It is too imperfectly preserved de c livis - 

 for exact determination, but it carries this type of Agnostus into the 

 Upper Cambrian as A. bisectus does the B. concinnus type. 



Occurring in dark grey shale with Peltura scarabeoides, Ctcnopyge 

 (lobata ?) and Agnostus (trisectus ?) McNeil brook, Mira river in Band 

 C. 3b. 



PARABOLINA, Salt. 

 PARABOLINA DAWSONI. PI. XVIT, figs. Qa-f. 



Bull. Nat. Hist. Soc. of N. Brunswick., vol. iv, p. 282, pi. v, figs. Qa-f. 



The middle piece of the head-shield is sub- trapezoidal in form, is strongly p , , ,. 

 arche 1 in front, where there is a narrow but prominent marginal fold, Dawsoni. 

 and has triangular projecting posterior angles. The glabella is cylindro- 

 conical in outline, and is a- broad as its length and half of the width of 

 the occipital ring ; it is as broad opposite the first furrow as at the occi- 

 pital r ng, and thence narrows more rapidly to the front, which is strongly 

 arched ; the front margin is correspondingly arched, and the intervening 

 area of the fixed cheek is therefore of nearly even breadth around the 

 front of the glabella ; the width of this area on the median line is two- 

 ninths of the length of the giabella. The glabella is marked by three 

 pairs of furrows, nearly equidistant, and having the inner extremities 

 turned backward ; the inner half of the posterior furrow is more evenly 

 impressed, and the anterior furrow is more distinct in the outer half, 

 which is at the anterior corner of the glabella. The occipital ring is of 

 nearly even breath, has a tubercle on the axial line, and has a triangular 

 lobe at each end on the anterior side, due to a faint furrow that crosses 

 the ring diagonally. The fixed cheek is triangular, and at the front of the 

 eyelobe as wide only as two-thirds of the space between the glabelLir fur- 

 rows ; the eyelobe is opposite the space between the second and third 

 furrow of the glabella, aud there is a short ocular fillet extending diago- 

 nally out to it from the anterior corner of the glabella. The posterior 

 marginal furrow and fold are distinctly marked. 



The movable cheek is more strongly arched in front than behind, and Description of 

 like the middle piece of the head-shield, has a sharp, narrow marginal fold ; * 

 the area of the cheek is somewhat wider in front than behind, and the 

 proportion in length of the three cords of the facial suture is 1, I, 2. 



