HiNU — Notes on the Homotaxial Equivalents, 8fc. 115 



Diameter of shell — 21 mm. 



Localities — Foynes and Foynes Island ; shales north of Lisdoon- 

 varna, = Horizon of Pendloside series. 



Observations — I have known this shell for some time from crushed 

 examples from the Pendleside series in England. A mutilated but 

 not entirely crushed example (fig. 16, pi. vi.) occurred to me from 

 Foynes Island, and two or three other examples from the mainland 

 of Foynes. I showed the specimens to Dr. A. H. Foord, who said he 

 had met with crushed specimens, and considered the species to be new. 

 It may, however, prove to be merely a variety of G. diadema, in which 

 the ribs bifurcate, and, though not fiat, vary considerably in number, 

 size, and approximation. 



Dimorphoceras Gilbertsoni, Phillips sp. PI. vi., fig. 17. 



This species is very common, but has not been previously noted in 

 Ireland. In England it ranges from the Pendleside series to the Coal 

 Measures (inclusive). It is also found at Chokier, Belgium. 



Localities — Foynes Island ; Lisdoonvarna, = Horizon of Pendleside 

 series. 



Dimorphoceras discrepans. Brown sp. PI. vi., fig. 18. 



This species is smaller, more globose, the umbilicus more minute, 

 than B. Gilbertsoni. The two shells always occur together, and have 

 the same vertical range and distribution, The suture line is, however, 

 very different. 



Localities — Foynes Island ; Lisdoonvarna, = Horizon of Pendleside 

 series. 



Nomismoceras spirorbis, Phillips sp. PI. vi., fig. 19. 



This is a very small shell, with a very wide umbilicus, and no 

 ornament. It occurs in the Culm of Devon and the Pendleside series 

 of England. 



Localities — Foynes Island; Lisdoonvarna, = Horizon of Pendleside 

 series. 



PISCES. 



Polyrhizodus, sp. PI. vi., fig. 20. 



This tooth occurred in the lower marine band of the Puffing Hole, 

 Kilkee, = Horizon of Millstone Grit. Dr. Smith Woodward has kindly 

 identified it for me. 



