J34 JOURNAL OF CON'CHGLUGY, VOL. I3, NO. II, JULY, 1912. 



pertenuis Migh. cannot be specifically separated from the British 

 estuarine U. obti/sus, nor B. turrita Moll, from the British marine 

 form of the same species. Sars' figure oi B. turrita (tab. 17, fig. 20) 

 is the same as our var. lajonkaireaiia, and although that form is 

 occasionally met with in the north, it is not the prevalent Arctic one. 

 Jeffreys' figure of the type and var. Itijonkaireana do not exhibit the 

 pillar-fold ; that character varies according to age, but is always 

 present in the adult. Neither is it shown in Forbes and Hanley's, 

 Sowerby's, or Sars' figures, but is present in Searles Wood's. 



Utriculus ventrosus Jeff. — The solitary example dredged by 

 Mr. Barlee many years ago, and from which this species was described, 

 does not appear to have been added to by the various deep-sea 

 explorations of recent years, though the Marquis di Monterosato 

 gives " Palermo, 90 metres." Nor have I been able to meet with a 

 specimen from a dozen hauls of the dredge " off Glenelg in Skye," at 

 various depths from 20 to 95 fathoms, whence Mr. Barlee obtained 

 his specimen, so that that locality evidently cannot be its home. 



Jeffreys' figure gives an erroneous idea of the shell, being drawn 

 equal in length and breadth ; it should be globosely oval, in accord- 

 ance with his description and dimensions. Sowerby's figure (pi. 20, 

 fig, 15) is a back view of a young Velutina icevigata, and not this; but 

 his supplementary figure (pi. 26, fig. 9) is a good copy of Jeffreys'. 



I have an example of a Utriculus that must be very near U. ven- 

 trosus. It was dredged off Loch Ryan, at the mouth of the Clyde, 

 in 27 fathoms, and is exactly of the same dimensions, is globosely- 

 oval, and apparently adult ; but it differs in that the microscopic 

 spiral sculpture is more visible, consisting of finely impressed lines, 

 and the longitudinal sculpture are flexuous lines of growth ; the apex 

 also projects and stands just clear of the crown-, though probably 

 that is as variable a character in this as in other species of the genus. 

 The upper part of the aperture where it joins the periphery has 

 been chipped away (as it was in Jeffreys' shell), so that that part 

 still requires description. But my specimen chiefly differs from 

 U. ventrosus in having the tops of the whorls sharply angulated and 

 surmounted with two keeled lines placed close together. In both 

 the above species the pillar or body of tlie shell is not barrel- 

 shaped, like its neighbours, but smaller and oval, like some of the 

 Fhiline, and they resemble in some of their features U. segnenzce 

 Wats. ,^ a ' Cliallenger ' and 'Porcupine' species; but the latter is 

 more oval and solid, much more strongly and visibly sculptured 

 (though omitted from the figure by the artist), and the whorls are 

 not keeled. All three come under the section Amphisphyra of l.oven. 

 I have pleasure in naming this shell U, tomlinianns (see pi. 5, fig. i) 



I ' Challenger' Gastropoda, p. 646, pi. xlviii., fig. 5. 



