307 



EOPTBRIA ? ORNATA. (N. Sp.) 

 a 6 



Fig. 299. 



Fig. 299. — Eopterial ornaia. a, side view of the aaterisr extremity ; 6, anterior 

 extremity shewing the gape : enlarged two diameters. 



Description — The specimen is the anterior extremity of a silicified indi- 

 vidual, which was procured by dissolving a small piece of limestone on hydro- 

 chloric acid. Hinge line, so far as preserved straight, projecting before 

 the umbones ; anterior angle about 90°, not rounded but angular ; most 

 projectingpointof anterior extremity narrowly rounded, and situated about 

 , one-third the height below the angle ; below this broadly rounded with an 

 oblique and gentle curve until a point nearly beneath the umbones on the 

 ventral margin is attained : all behind this not preserved. Both valves are 

 rather strongly convex. The anterior angle in front of the beaks is com- 

 pressed and the dorsal edges of the hinge are transversely corrugated. On 

 an anterior view the shell is seen to be gaping, the edges within the fissure 

 crenulated as shewn in fig. b, above. Surface with strong, sharp, concen- 

 tric ridges, from eight to ten in one line. 



The specimen when perfect was probably about 8 lines in length. 



This species is placed in the genus Eopteria provisionally until more 

 shall become known about its aflSnities. 



Locality and Formation. — Point L6vis. In the upper part of limestone 

 No. 2, Quebec group. 



Oollector. — Sir W. E. Logan. 



GASTEROPODA. 



MURCHISONIA MiSSISQUOI. (N. Sp.) 



Besoription. — Shell large, elongate, acutely conical, tapering at the 

 rate of about one inch in a length of three inches. Whorls narrow, strongly 

 convex, with three or four carinse on each, the spaces between concave. 

 Surface unknown. 



