DUBLIN NATU&AL HISTOHT 80CIETT. 65 



DESCRIPTION OF PLATES III. AND IV. 

 PLATE III. 



Fig. 1. Underside ofunique specimen of ^wow/?Aa/w«m«^a^t« (Phillips), 

 preserved in the Museum of Trinity College ; locality not cer- 

 tain, but believed to be Strokestown, county of lioscommon. The 

 figure shows the tubular character of the crests, which are closed 

 below ; their upper surface is not known. 



Fig. 2. Natural cast of same, taken from the upper surface of the lime- 

 stone slab. The original, exclusive of the spines, is eight inches 

 (nearly) in diameter. 



PLATE IV. 



Fig. 1 . A specimen oi Euomphalus acutus (Sowerby) ; somewhat distorted 

 by cleavage, probably from Little Island, county of Cork : this 

 specimen belongs to the Museum of the Royal Dublin Society. 

 It is remarkable for the semicircular sinuosity observable on the 

 lines of growth in passing the keel of each whorl, which must 

 have corresponded with a notch in the outer lip. There is, how- 

 ever, no sinus, as observable on Fig. 2. 



Fig. 2. EiMtnphalus Regince {xmhi), found in the lower limestone at Shef- 

 field, Queen's County. Specimen unique, in Museum of Trinity 

 College. 



E, Regin(B. — Testa conica ; spine angulo 70° ; anfractibus 

 6-8, transversim eleganter striatis, sinu lato carinatis, supra 

 tabulatis ; apertura subquadrata scissura, alta supeme denotata. 

 Breadth to Height = 150 : 100. 

 This shell resembles in its general character E. acutus, but 

 differs from it in two particulars ; first, in having a better marked 

 keel, which is formed by the flat upper surface of the whorl mak- 

 ing a well-marked angle of 105° with the side ; secondly, by the 

 Pleurotomaria-like sinus band, which bevils oS the angle of the 

 keel; this sinus is Ij lines broad. The striflB on the surface of 

 the shell form a reversed angle, well marked, as is shown in the 

 figure. 



Figs. 3 & 4. Under and upper surface of two specimens of Ewmphalut 

 pugilis (Sowerby), showing the ornamental knobs, 20 to the 

 whorl, characteristic of this species, which seems to be identical 

 with Euomphalus turberculatus (De Koninck). This fossil is 

 rare, although locally abundant in some parts of the lower lime- 

 stone of the county of Kilduic. 



