Plate III. 



Gaudrijccras tcvuHirotaia m. Pp. 10-20. 



(Ail Ihc specimens in llie »^ci. Cuil. JMus). 



Y'vs.. 1. var. intermedia, a, side view; b, front view of a specinien i'roni 

 upper Ammonite-beds of the Sannshibe, Prov. Ibnri. Nat, size. 



Fi^-. 2. var. ornata. a, side view ; h, front view of a specimen from 

 r((chi/(liscu.s-\)i'{h of tlie Kiknnie/awa, Pntv. Isjiikari. Nat. size. 



VW. 3. A part of the suture line of a large s})ecimeu uf normal ty[)e. 

 From Fachydiscus-hcd^ of the Bannosawa, Prov. Ishikari. Nat. 

 size. — s., siphonal line. 



Y'vj^. 4. Suture line of a s}>ecimen. 3..") cm. in (ham., of normal type. 

 From Pachydiscus-heda of the iSanushibe, Prov. Iburi. — s., sjphutial 

 line ; ura., umbilical margin ; u-\, umbilical suture. 2 i x . 



