CAMBRO-SILURIAN FOSSILS OF MANITOBA. 



Trans. R. S. C, 1889. 



Sec. IV. Plate XV. 



NatuîialHistokv 



SOCIETY. 

 /^^/tporated 



L. M. LAMBE. DEL 



I. — Oncoceras magnum. — .Side view of a specimen from East .Selkirk. 



2 and 3. — Oncoceras gibhosuni. — (2) Longitudinal section of a specimen from Pike Head; and (3) Part of the test of another from 

 Swampy Island. 4. — Cyrloceras Manitohense. — Longitudinal section of a specimen from Bull's Head. 



