Plate IV. 



Li/ioceras imperiale m. P. 12. 



Fig, 1. Sntnre Une, drawn from the specimen figured in PI. TL Nat. size. — 

 9., siphonal line ; nm., ninl)ilical margin ; ns'., nmLilical suture. 



Gcmdryceras limatum m. P. 35. 



Fig. 2. Suture line, drawn from the specimen figured in fig, 2, PI. V. 

 Nat. size. Lettering as in fig. 1. 



Gaudryceras ienuil irai urn m. Pp. 28-29. 



Fig. :'. var. infrequens. a, side view; b, front view of a specimen preserved 

 in the Sei. Coll. Mus. From ScapJdtes-lmh of the Opiraushihets, 

 Prov. Iburi. Nat. size. 



(landrycerns crassicosfaf/rin Jimbo s}). l^p. 29-30. 



Fig. 4. Side view of a specimen in the Sei. Coll. Mus. From ujjper 

 Ammonite-heds of Cape Soya, Prov. Kitanii. Nat. size. 



Gaudryceras striatum Jimbo sp. Pp. 31-34. 



Fig. 5. Side view of a specimen in the Sei, Coll, Mus. From Puchydiscus- 

 heds of the Abeshinai-rubeshibe, Prov. Teshio. Nat. size. 



Fig. G. var. pieta. a, side view ; b, outline of a transverse section ; c, 

 surface of a septum, showing the septal lobe, of a specimen in the 

 Sei. Coll. Mus. From FacJ/yrïisc/is-heih of the LTipets-rubeshibe, 

 Prov. Teshio. Nat. size. 



Gaudryceras Yamashifai m. Pp. 38-39. 



Fig. 7. Side view of the type in the Sei. C(dl. Mus. From upper Ammonite- 

 beds of the Saiuishibe, Prov. Iburi. Nat, size. 



