PLATE XLIII. 



GLTPHIOCERAS (s.-g. MuENSTEROCERAS) ELLIPSOIDALE, G. C. Crick. 



Fig. 1 a. Lateral view of the type specimen. 1 b. Front view of the same. 1 c. Suture-line from 

 another specimen. Dublin Museum of Science and Art. Fig. 1 a. Kildare (exact locality in the 

 county unknown.) Fig. lc. St. Doulagh's. (Page 194.) 



Gltphioceras (s.-g. Sphenoceras) striatum, J. Sowerby, sp. 



Fig. 2 a. Lateral view of a fine specimen with remains of the test, showing the characteristic 

 ornamentation ; the sutures and a constriction are also well displayed. [Drawn from a specimen in the 

 British Museum from Derbyshire (No. 33,451) ; this is intended to supplement the very defective 

 Irish specimens figured on PI. XLII, the only ones available.] 2 b. Suture-line of this species ; the 

 lobes and saddles are made much too obtuse in this figure (compare 2 a), which is copied from the 

 figure of Sowerby's type specimen ('Cat. Foss. Ceph., British Museum,' pt. 3, 1897, p. 168, fig. 78). 

 (Page 160.) 



GrLYPHIOCERAS (s.-g. MlJENSTEROCERAS) OBESTJM, Sp. UOV. 



Fig. 3 a. Lateral view of the type specimen distorted into an elliptical form in which the longer 

 diameter is nearly at right angles to the aperture. 3 b. Front view of the same, showing the sutures. 

 3 c. Suture-lines of the same, showing the invagination of the peripheral lobes. (Page 196.) 



Gltphioceras, sp. 



Fig. 4 a. Lateral view of the cast of a very small individual. 4 b. Front view of the same. Cregg 

 (Nobber). Dublin Museum of Science and Art (" Griffith Collection "). (Page 209.) 



Gltphioceras (s.-g. Betrichoceras) truncatum, /. Sowerby, sp. 



Fig. 5 a. Peripheral view of a small specimen. S'b. Lateral view of the same, showing doubly 

 curved deep constrictions on the cast ; fragments of the smooth test are also present. Ballycahane. 

 Dublin Museum of Science and Art (Geological Survey Collection — No. 2963). (Page 165.) 



