PLATE XLIX. 



Glyphioceras (s.-g. Beyrichoceras) bilingtje, /. W. Salter, sp. 

 Fig. 1. Lateral view of au imperfect specimen, showing the characteristic spiral grooves and the 

 linguiform lateral crest. Caher Lane. Dublin Museum of Science and Art (Geological Survey 

 Collection— No. 2208 C). (Page 186.) 



Glyphioceras (s.-g. Beyrichoceras) reticulatum, /. Phillips, sp. 



Tig. 2 a. Lateral view of a fragment, with some of the test adherent and a very deep and wide 

 constriction upon the cast. 2 b. Enlarged view of the ornamentation, showing the fine crenulation of 

 the lines. Eathcahill (No. — 3 C). Dublin Museum of Science and Art (Geological Survey Collec- 

 tion). (Page 182.) 



Fig. 3 a. Lateral view of a younger individual, showing a fragment of the test and two deep and 

 wide constrictions npon the cast. 3 b. Enlarged view of the reticulate lines on the periphery. Foynes 

 Island (No. 833 C). Dublin Museum of Science and Art (Geological Survey Collection). (Page 182.) 



Glyphioceras (s.-g. Beyrichoceras) Davisi ?, A. H. Foord and G. C. Crick. 

 Fig. 4. Lateral view of an imperfect individual doubtfully referred to this species. Eathcahill 

 (No. 3435 C). Dublin Museum of Science and Art (Geological Survey Collection). (Page 187.) 



Glyphioceras (s.-g. Beyrichoceras) pulchellttm, sp. nov. 

 Fig. 5. Lateral view, showing the fine ornamentation and two narrow constrictions. Eathcahill. 

 Dublin Museum of Science and Art (Geological Survey Collection — No. 3450 C). (Page 190.) 



Glyphioceras (s.-g. Beyrichoceras) subreticulatum, sp. nov. 



Fig. 6 a. Lateral view of a cast, showing towards the aperture some faint traces of ornamentation 

 in the shape of sigmoid lines ; the suture-lines are well preserved. 6 b. Peripheral view of the same, 

 showing the faint median keel. Foynes Island (No. 817 C). Dublin Museum of Science and Art 

 (Geological Survey Collection). (Page 184.) 



Fig. 7 a. Lateral view of a smaller specimen, with the test preserved. 7 b. Peripheral view of the 

 same. 7 c. The ornamentation of the test enlarged, showing the bifurcation of the lines. 7 d. Suture- 

 line of the same enlarged. Foynes Island (No. 845 C). Dublin Museum of Science and Art 

 (Geological Survey Collection) . (Page 184 ) 



Glyphioceras (s.-g. Beyrichoceras) diadema ? H. E. Beyrich, sp. 

 Fig. 8«. Lateral view of a young individual apparently belonging to this species, showing the 

 strongly sigmoidal character of the ornaments of the test. 8 b. Front view, showing the stronger 

 ribbing on the periphery. St. Doulagh's. Bristol Museum. (Page 179.) 



Glyphioceras (s.-g. Beyrichoceras) spirale, J". Phillips, sp. 

 Fig. 9. Lateral view of a crushed cast, showing the remarkably regular spiral lines. Loughshinny. 

 Dublin Museum of Science and Art (Geological Survey Collection). (Page 191.) 



Gastrioceras circumnodosum, sp. nov. 

 Fig. 10. Lateral view of an artificial cast, showing the tuberculate margin of the umbilicus and 

 traces of ribbing on the periphery. Fig. 11. Lateral view of a younger individual. Firoda. Dublin 

 Museum of Science and Art (Geological Survey Collection). (Page 196.) 



Gastrioceras circumplicatile, sp. nov. 

 Fig. 12 a. Lateral view, showing the plications at the edge of the umbilicus giving rise to fine 

 transverse ribbing, and the spiral lines crossing these. 12 b. Peripheral view of the same, showing the 

 median sinus indicated by the form of the ribbing. Fig. 13. Peripheral view of another individual, 

 showing the spiral lines more distinctly than in 12 b. " Cliffs of Moher." Dublin Museum of Science 

 and Art (Geological Survey Collection). (Page 200.) 



Glyphioceras (s.-g. Beyrichoceras) truncatum, J. Phillips, sp. 

 Fig. 14. Suture-line of a large and mature specimen, giving more accurately the form of the sutures 

 than the figure on PI. XLIV (2 c). Kilmacat (county of Limerick). Museum of the Royal College 

 of Science for Ireland. (Page 165.) 



Temnocheilus coronatus, M'Coy. 

 Fig. 15 a. Lateral view of a fine specimen, showing the heavy nodes at the margin of the periphery 

 and some of the suture-lines. 15 b. Front view of the same. Little Island. Mr. James Duffy's 

 Collection (Dublin). (Page 206.) 



