CAMBRO-SILURIAN FOSSILS OF MANITOBA. 



Trans. R. S. C, iJ 



Sec. IV. IM.nte XVII. 



'^''^^^0/^;-^ 



'Rr 



L. M. LAMBE, DEL. 



Apsidoceras insigm. — (I ) Side view of the type of the species, slightly reduced in size ; (2) Outline of transverse section 



of the same at the larger end. 



