PLEUROTOMA. 377 



outer Up not much curved, somewhat inflected ; edge thin and 

 plain : lahial notch rather short, very distinct, and incurved ; 

 it is situate below the periphery, to which the upper corner of 

 the outer lip is attached : inner lip retired, forming a mode- 

 rately thick glaze : pillar flexuous. L. 0*6. B. 0-2. 



Habitat : Coralline zone at Exmouth (Clark and 

 J. G. J.) ; Torbay (Alder) ; Falmouth and Land^s End 

 (Hockin) ; Weymouth and Guernsey (Hanley) ; Good- 

 wick Bay^ Pembrokeshire^ 20 f. (J. G. J.) j Bantry Bay, 

 12-15 f. (M'^Andrew); Connemara (Forbes and others); 

 west coast of Scotland (Smith and others); co. Antrim 

 (Hyndman). Fossil in Sicily (Philippi and Calcara). 

 Living in Christiansund, 30-40 f. (Danielssen); Norway 

 (Lilljeborg,y?6/eDanielssen); Loire-Inferieure(Cailliaud); 

 Vigo and south coast of Portugal, Madeira, and Canary 

 Isles, 8-60 f. (M^Andrew); Mediterranean, 8-50 f. 

 (Philippi and others) . 



P. Smithii of Forbes, P. Farrani of Thompson, Fusus 

 elegans of Brown and Leach, and Mangelia Loveneana 

 of Beeve. This last-named author made also a great 

 many other so-called species from the late Mr. Cuming^s 

 collection, which will not stand the test of criticism ; 

 but the excellent illustrations that form the chief merit 

 of his ' Conchologia Iconica ' amply compensate for such 

 failures. Mangelia striolata of Risso is apparently P. 

 attenuata. 



P. accincta [Murex accinctus, Mont.), one of Las- 

 key^s pseudo-discoveries, is West-Indian. 



2. P. attenua'ta*, Montagu. 



Murex attenuattts, Mont, Test. Br. (i.) p. 266, t. 9. f. 6. Mangelia aU 

 tenuata, F. & H. iii. p. 488, pi. cxiii. f. 8, 9, and (animal) pi. ER. f. 5. 



Body white, with flaky specks [there are a few pink or red 

 * Attenuated. 



