Point Levi Fossils. 305 



length; tlie tubercle is obscure and appears to indicated by the 

 small indentation forward in the middle of the transverse furrow. 



The specimen represented by Fig. 3, a, is provided with a tuber- 

 cle, but I cannot see in which direction the apex is directed, and 

 consequently am unable to say whether it is a head or a tail. It 

 has the broad margin of Fig. 3, 6, and I think therefore it belongs 

 to the same species. The segment next the thoracic extremity is a 

 little less than one-third the whole length, and about one-third the 

 whole width. The anterior segment is large and convex, extending 

 quite to the concave border, where it is full one-half wider than 

 it is at the suture between it and the smaller segment. The tu- 

 bercle is situated in the transverse suture, and makes a small in- 

 dentation in the edge of the larger segment. 



Length of the specimens, about two lines. 



Limestone, No. 1. 



CONOCEPHALITES ZeNKERI. K. S. 



Fig. 4. 



Fig. 4. Conocephalites Zenkeri. 



Description. — Length apparently about two inches. Head very 

 convex, nearly semi-circular with a strongly elevated thin sharp 

 margin all round the front and sides, and just within this a wide 

 deep uniformly concave furrow, the width of which is equal to 

 about one third the length of the glabella. The posterior margin 

 is strengthened by the neck segment which extends the whole 

 width of the head, and becomes much elevated on approaching the 

 outer angles. Glabella conical, very convex^ most elevated at 

 about the mid-length, with a well defined neck furrow, the pos- 

 terior lateral furrows directed obliquely forwards at an angle of 

 45° with the longitudinal axis of the body, their inner extremities 

 separated from each other by full one third the width of the 

 glabella; the posterior lobes sub-triangular, their anterior angles 

 situated at nearly one third the length^ of the glabella forward 

 excluding the neck furrow and segment ; the middle lateral fur- 

 rows represented by a small depression or indentation on each 

 Can. Nat. 6 Vol. V. No. 4 



