FAUNA OF THE ST. JOHN GEOUP. 61 



Dr. W. C. Brogger, who has revised Augelin's arrangement of Leptoplastus and its 

 allies, has so extended and improved the description of this genus that our species cannot 

 be included, and, notwithstanding their small size, they appear to come nearer to Anomo- 

 care than to any other genus. This is seen if we notice how the cheeks are produced 

 backward, and that the pygidium has a broad border band and a narrow, many-jointed 

 rachis. For these reasons also the two species seem to belong to this genus rather than 

 to Ptychoparia or Liostracus. 



Anomocare stenotoides. Matt. (PI. XIII, figs. 3 a-d.) 

 Leptoplastus stenotoides. ' Can. Rec. Sci.,' Oct., 1889. 



Middle-piece of the head subtrapezoidal, depressed in front. Marginal fold distinct, 

 elevated. G-labella ovate-conical, indented on the sides with two furrows, moderately 

 arched backward. Occipital ring rounded behind, divided from the glabella by a distinct 

 furrow, bearing a small tubercle on the middle. Cheeks arched upward in the middle ; 

 eyelobes prominent, ocular fillet faint. Movable cheeks prolonged behind, tumid along 

 the middle, terminated by a strong genal spine directed backward and outv^'ard ; the 

 spine is about as long as the rest of the cheek ; the cheek has a strong marginal fold on 

 the outer side, and a short but distinct posterior fold. 



The pygidium is nearly semicircular, longer than half of its width, and has a rather 

 broad, flat margin. Eachis distinct, extending to the marginal furrow, divided by two 

 distinct and two or more faint rings. Lateral lobes of the pygidium with three lobes on 

 each side. 



The hypostome found loose with this species is subrectangular, rounded in front, 

 truncated at the posterior corners, depressed at the ends, and having there a narrow 

 upturned fold. 



She. — Length of the middle-piece of the head, 6 mm. ; width, 10 mm. Length of 

 movable cheek, 11 mm. ; width, 4 mm. Length of pygidium, 4 mm. ; width, 1 mm. 

 Length of hypostome, 3 mm. ; width, 2 mm. 



Horizon and Locality. — In calcareous layers of the fine, dark, olive-grey shales north 

 of the flags of Division 2, at Lona: Island, Kennebecasis River. 



Anomocare, sp. 



Examples of a pygidium indicating a species twice as long as the above occur with it. 

 Possibly the same species of a larger size. 



Anomocare spiniger. Matt. (PI. XIII, figs. 4 a-e) 



Leptoplastus spiniger. ' Can. Rec. Sci.,' Oct., 1889. 



Middle-piece of the head subtrapezoidal, with a spinous projection in front. The head 

 is strongly bent down in front, and has a distinct marginal fold ; the fold is produced in 

 front into a sharp, slender spine, more than half of the length of the glabella. Glabella 



