neio or h'/fle-knmcn Goniatites /?-om Ireland. 447 



related to sucli forms as Gh/phioceras reticulatum, ^ . Pliillips, 

 sp.*, and Glyphioceras Davisi, Foord & Crick +, but tVoiii 

 the former it differs by its more inflated whorls, the form of 

 its umbilicus, and the nature of its suture-line, and from the 

 latter by its angular but not prominent umbilical margin and 

 the form of its suture-line. 



Horizon and Locallfu. Both examples that are referred 

 to this species are from the Carboniferous Limestone of Little 

 Island, Cork, Ireland. 



Glypliioceras corpulentum^ sp. n. (Figs. 12, 13.) 



Sp. char. Shell subglobose, umbilicated, rapidly in- 

 creasing ; greatest thickness at the umbilical margin, about 

 three fifths of the diameter of the shell ; height of outer whorl 

 about three sevenths of the diameter of the shell. Whorls 



Fiff. 12. 



Glyphioceras corpulentitm. — a, lateral view of the type specimen ; h, peri- 

 pheral view of the same, showing the longitudinal and transverse 

 ornaments of tlie test. Carboniferous Limestone : St. Doulagh's, 

 Co. Dublin, Ireland. Drawn from an example in the collection of 

 Dr. A. H. Foord, F.G.S. About three fifths natural size. 



few (? number) ; inclusion nearly complete; umbilicus deep, 

 with subangular margin and steep sides, about three tenths of 



• J. Phillips, Geol. Yorks. pt. ii. 1836, p. 2;{.5, pi. xix. figs. 2t)-3-2. 

 Pee also A. II. Foord & G. C. Crick, Cat. Foss. Ceph. Brit. Mus. pt. iii. 

 1897, p. 193. 



t A. II. Foord & G. C. Crick, Cat. Foss. Ceph. Brit. Mus. pt. iii. 1897, 

 p. 198, fig. 95. 



33* 



