306 PYRAMIDELLIDvE. 



even retuse in the middle, and abruptly shelving below : 

 the body, if viewed dorsally, occupies one-third of the 

 entire length ; if viewed ventrally, scarcely exceeds the 

 spire ; the apex is obtuse ; the suture but little oblique. 

 The base is short and its surface flattish ; there is no per- 

 foration, but often a slight chink. The mouth occupies 

 more than one-fourth of the entire length of the shell, 

 and half the breadth at the base ; it is subovate, but 

 squarish above, and rather effuse below : owing to the 

 concave outline of the inner lij), which is reflected, but 

 not appressed, the pillar occasionally exhibits at its com- 

 mencement a tooth-like projection, which is much more 

 developed in some examples than in others. A fine in- 

 dividual occasionally measures two lines iu length and 

 three-fourths of a line in breadth. 



This rare shell has been found in but few localities. It 

 was first observed in our seas by Professor Harvey, of 

 Dublin, who found it at Miltown Malbay, in the county of 

 Clare. It has been found in the Frith of Clyde, on the 

 shores of Arran, by the Rev. D. Landsborough, and Mr. 

 Bean ; and at Arran in Ireland, by Mr. Barlee, who, as 

 well as Mr. Metcalfe, has taken it in Guernsey. 



It was discovered by Philippi on the coasts of Sicily. 

 Under the name of Odostomia piq^a it has been recorded 

 by Searles Wood from the coralline crag of Sutton. 



As the apical whorls of the only existing type of the 

 Turbo pallidus of JNIontagu have unfortunately been 

 broken off, we are only able to conjecture from analogy 

 (the pliciform twist of its columella, as in insculpta^ to 

 which species, indeed, it bears much resemblance, but has 

 a greatly more elongated spire) that it may belong to this 

 genus. The specimen in our national museum is not in 



