DUNDRT GASTEROPODA 47 



other respects they agree with the description in the Pal. frangaise, 

 so that we have little doubt about their identification. The 

 columella is straight, making the mouth very angular. 



The surface is much more granulated than in P. Amyntas, 

 D'Orb. 



There are three specimens in the Museum. 



Locality — Dundry. Inf. Ool. 



Our figure does not show the reticulation of the surface. 



PLErROTOMAEIA GRANULATA, Sowerhy. 



1819 Trochus granulatus, Sow., Min. Conch., pi. 220, 



fig. 2. Pleurotomaria in Index 



to ditto (non Goldf. nee D'Orb., 



nee Qu., nee Lycett.) 



1848 P. granulata var reticulata, Desl., Mem. Soc. 



Linn. Norm. YIII. 

 pi. 16, fig. 6. 

 Height, 22 mm. Greatest breadth, 26 mm. 



We ought to have the original specimens drawn by Sowerhy, 

 as they belonged to the Miller collection; they have, however, 

 apparently been lost; still we have some in a good state of 

 preservation, and agreeing with his figure. 



The shell is conical, depressed; whorls convex, slightly 

 scalate; base of last whorl very convex; here the concentric 

 lines are so much stronger than the radiating lines, that the 

 granulated appearance is there feeble; there is a tendency for 

 them to disappear half-way to the umbilicus : sinus-band, with a 

 convex ridge of several lines, crossed by strong curved lines. 



"We approve of D'Orbigny's separating this from the next 

 species ; but we are not sure that his is the same as Sowerby's 

 species; we take his pi. 380, figs. 1 — 6, to be only a variety of 

 his P. Palesmon, and which might therefore be termed var. 



