﻿MACROCHILINA. 163 



those from Wolborough, and their whorls are more or less shouldered or folded 

 over at the top instead of proceeding in a straight convex curve down from the 

 suture. This feature is, however, much obscured in them by the matrix, and is 

 less prominent than it is in Schlotheim's type and in many other German shells. 

 There also appears to me to be a constant difference in the ornament, that in the 

 Chudleigh fossils being finer and more irregular than that in the other English 

 shells. I therefore believe that they must be regarded as distinct, and as 

 respectively belonging to Schlotheim's two species, which are both described as 

 very variable. 



Goldfuss has united these two species, dividing them, however, into several 

 varieties, among which he figures shells which agree with each. 



Buccinum Oceaui, Goldfuss, 1 appears from the very poor specimen figured to 

 be more elongate, and to have a higher spire and broader whorls. I am, however, 

 inclined to think that these differences are due to contortion and to its being a 

 cast, and that it probably belongs to the present shell. 



3. Maorochilina lincta, Phillips, sp. PI. XVI, fig. 10. 



1841. Loxonema lincta, Phillips. Pal. Foss., p. 100, pi. xxxviii, figs. 185 a, b. 

 1854. — — Morris. Cat. Brit. Foss., p. 255. 



1888. — — Mh. Foss. Brit., vol. i, Pal., p. 163. 



Description. — Shell small, conical, of about five volutions. Suture linear, 

 crenulated by the ornament. Whorls narrow, adpressed so as to form a fine 

 hem or beading round the suture, otherwise moderately concave. Body- whorl about 

 equal in height to the rest of the spire. Surface covered with fine and prominent, 

 arched, longitudinal ridges, separated by similarly-shaped furrows, sloping back- 

 wards from the bead below the suture, becoming perpendicular over the central 

 parts of the whorl, and then curving gently backwards again in the lower part of 

 the body-whorl. Mouth not shown except in its upper part, which is wide and 

 acute ; apparently short. 



Size. — Height of a specimen wanting the lower part of the mouth 15 mm., 

 width 9 mm. 



Locality. — Barton ; a single specimen is in the Lee Collection in the British 

 Museum. 



Remarks. — The one specimen of this shell known to me is unfortunately 

 imperfect at its base, so that only part of the body-whorl and of the mouth can be 

 seen. I believe that it belongs to the species described by Phillips under the name 

 of " Loxonema lincta" though in several particulars it is unlike his figure. Thus it 



1 1844, Goldfuss, ' Petref.,' vol. iii, p. 29, pi. clxxiii, fig. 1. 



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