Plate VII. 



TeiTCKjonites sphaeronotus Jjmbô sp. Pp. 45-47. 



Fig. ]. a, <uk1 b, «ide ami ventral view« of a .specimen in the Sei. Coll. 

 Mus. From upper Ammonite-beds of the Yübarigawa, Prov. 

 Jsliikari. Nat. size. 



TetrcKjonites (jlabrus Jimbo s]). Pp. 43-15. 



Fig. 2. Side view of a specimen in the tSci. Coll. Mas. From u[)[)er Ammonite- 

 beds of the Sanushibe, Prov. Ibnri. Nat. size. 

 Fig. 5. A part of the suture line of the same specimen. Enlarged. 



Tetrcujonites cfr. ep'njonus KüSsjiat. Pp. 49-51. 



Fig. 3. Side view of a specimen in the Sei. Coll. Mus. Fn)m u[)[)er 

 Ammonite-beds of the Kenekawen-opiraushibets, Prov. Teshio. Nat. size. 



Tetrugonites popetcnsls m. P[). 48-49. 



Fig. 4. a, side view ; b, front view, of the type in the Sei. Coll. Mus. 



From PacJti/discus-liGds of the Sanushibe, Prov. Iburi. Nat, size. 

 Fig. 6. Suture line of another specimen in the Sei. Coll. Mus. From 



rach/jdiscus-hoda of the Penke-opushikep, Prov. Teshio. Enlarged. 



Gamlrijceras yolMt/amai m. P. 37. 



Fig. (]'. Suture line drawn from the specimen iigured in PI, VL, fig, 2. 

 Enlarged. — s., siphonal line ; urn., umbilical margin ; us., umbilical 

 suture ; as., antisiphonal line. 



