324 TROCHID.E. 



12. T. ex.ispeilv'tus'^^ Pennant. 



T. exasperafus, Penn. Brit. Zool. iv. p. 120. T. 0:1^ uus, F. & H. ii. p. 505, 

 pi. kvi. f. 11, 12. 



" The animal has the sides of the foot, the tentacles, and 

 lateral cirrlii tinged ^^ith madder red. The eye-peduncles are 

 white, as is also the dLsk of the foot " (Forbes and Hanley). 



Shell of the same size and general shape as T. striatus. It 

 is rather more pp'amidal, and decidedly more solid ; the sculp- 

 ture is much coarser, and the basal ridge is longer and stronger, 

 and encircles each whorl ; it has only half as many ridges and 

 cross stria?, and the former are frequently nodulous : the colour 

 is dilferent, having usually a good dciil of red or pink in it, and 

 is sometimes prettily decorated by occasional concentric rows 

 of rose-red and white spots, or it is now and then of an ashy 

 or ohve hue ; the apex is mostly, but not always, red or pink. 



Habitat : Channel Isles, among loose stones at low- 

 water mark (Lister and others); Lnlworth, 7-12 f. 

 (J. G. J.); Wey month (Pnlteney and others); Land''s 

 End (^laton and others) . The following localities are 

 doubtful,, or some of them belong to T. striafus: — 

 Margate (Hanley); Hants (Forbes); Snssex and Devon- 

 shire (Da Costa); Torquay (Hanley); Bantry Bay 

 (DiU^v^m); Cork (Humphreys); Dublin Bay (Tui'ton, 

 Warren, and Walpole); north of Ireland (Thompson); 

 Ayr and Firth of Clyde (J. Smith). Fm'ther informa- 

 tion is also desirable as to the only British locality 

 where the present species has been recorded as fossil, 

 viz.AVexford (Col. Sir H. James, ^fi^t' Forbes) . Brocchi 

 noticed it from the tertiary strata in the Isle of Ischia, 

 and Philippi from those of Sicily. It inhabits tlie coasts 

 of France, Portugal and Spain, every part of the Medi- 

 terranean, the iEgean, Madeira, and the Canaries, at 



* Koughened. 



