Hind — Notes on the Homotaxial Equivalents, 8^c. 1 1 1 



Ptychomphalus interstrialis (?), Phillips sp. 1840. PI. v., fig. 18. 



Fleurotomaria interstrialis^ Phillips, 1840. Geol. Yorks., 

 part ii., p. 227. PI. xv., fig. 10. 



Specific characters — Shell below medium size ; spire pointed, of 

 five angular whorls which expand rapidly, so that the last is tumid, 

 and comprises a little more than half the shell. The band of the 

 sinus is narrow, bounded by strong keels, the upper forming the 

 margin of the whorl. The portion of the whorl above the band has 

 several strong spiral striae, and is convex; that part below the band is 

 almost flat, and rapidly contracted towards the suture, which is linear, 

 and is covered by five spiral ridges decussated by curved transverse lines 

 so strongly as to give rise to rows of tubercles. 



Dimensions — Height, 5 mm.; breadth, 6mm. 



Locality — The upper marine band, Puffing Hole, Kilkee, = Horizon 

 of Millstone Grit. 



Euphemus TTrei, Flem. sp. 



I got two specimens of this shell from the marine band 1 mile 

 north-west of Kilkee. 



CEPHALOPODA. 



Orthoceras Steinhaueri, Sow. PI. v., figs. 20 and 21. 



This species tapers very gradually, and has very deep chambers. 

 Externally the shell is ornamented with moderately close transverse 

 linear ridges. 



Localities — England : The Pendleside series of High Greenwood, 

 near Todmorden; above the Hardbed Coal, Halifax; above the liullion 

 Coal of Lancashire. Ireland : The shales immediately above the 

 Carboniferous Limestone, Foynes Island. 



Orthoceras koninckianum, d'Orb. PL v., fig. 22. 



This species is easily recognised by its rapid taper and annulated 

 surface, covered by fine parallel, transverse, close-set lines. 



Localities—Eji^limd. : The Pendleside series of Cum s worth Dean, 

 near Hebden Bridge. Ireland : Shales immediately above the 

 Carboniferous Limestone, at Eoynes Island and Fishergate ; Marine 

 band at Puffing Hole, Kilkee. Belgium : Chokier. 



I 



