BUCCINOPSIS. 299 



also thickened and reflected : inner Jlp thin, consisting of a 

 porcellanous glaze : pillar broad, smooth and polished ; micro- 

 scopically viewed it is curved with pustules, which are arranged 

 in lines lengthwise : operculum obliquely triangular, pale 

 yellowish-brown, thin, marked by several faint lines, which 

 diverge from the nucleus upwards ; layers of growth numerous 

 and irregular. L. 1-5. B. 1. 



Var. eburnea. Shell smaller and thinner, with the spire 

 more produced. Tritonium eburneum, Sars, Keise i Lofoten 

 og Einmarken, 1849, p. 73. 



Habitat : Co. Cork^ in the stomach of the red gur- 

 nard and haddock (Humphreys) , from which source I 

 have reason to believe Dr. Turton^s typical specimen, 

 now in my possession, was derived, instead of from 

 Plymouth as stated by him; west coast of Ireland, 

 100 f. (Hoskyns, fide King) ; soft ground beyond the 

 Dogger bank, 40-50 f. (King and others) ; Aberdeen- 

 shire (Macgillivray and Dawson). The variety has 

 been dredged by me, on a bottom of fine sand mixed 

 with mud, in 72-87 f., off the northern and eastern 

 coasts of Shetland (with Fusus Norvegicus and F. Berni- 

 ciensis),hj Sars at different places between the Loffoden 

 Isles and the North Cape, at depths of from 40 to 50 f., 

 and by M^ Andrew and Barrett also in Upper Norway, 

 in 100-160 f. The typical form occurs in the Eed and 

 Coralline Crag, but is more rare in the latter; Antwerp 

 Crag (Nyst) . I noticed a specimen from the last-men- 

 tioned deposit in the Royal Museum at Brussels, 

 which measured 3| inches in length by If in breadth. 

 Mr. Searles Wood found a specimen in the Red Crag 

 having the spire reversed. The following localities re- 

 corded for this species in a living state require confir- 

 mation: — Sea of Okhotsk (Middendorff, as Tritonium 

 odides), and Behring's Straits (P. Carpenter). 



The animal is slimy, and rather active. Its egg-cases 



