﻿166 DEVONIAN FAUNA. 



two shells from the " Carboniferous Limestone of Bradley, near Newton Abbot," 

 which appear to me to belong to two different species : one, I think, is a specimen 

 of this species ; and the other of M. subcostata. His description is not specifically 

 identifiable. 



M'Coy says, " The greater abrupt convexity of the middle part of the body- 

 whorl, and the contracted, more slender spire easily distinguish this species from 

 the Carboniferous Buccinum imbricatnm or acutum, Sowerby, with which it has 

 been confounded." He does not, however, seem to have observed that Sowerby's 

 original B. imbricatum, though described as Carboniferous, came from " Bradley," 

 which probably means Wolborough, and therefore that they were Devonian 

 shells. 



The minute shell described by von Eichwald as M. Isevis seems to me so similar 

 to the smallest of our figured specimens, that I think it must be regarded as in all 

 likelihood the fry of this species. 



Affinities. — I have been in much doubt whether this species agrees with Phasia- 

 nella ventricosa, Goldfuss; 1 but I am inclined to think it must be separated on ac- 

 count of its shorter spire, its larger and higher body-whorl, and the much greater 

 elongation of its mouth. On the other hand, it seems somewhat like Ph. ovata, 

 Goldfuss, 2 but differs from it by being a broader shell, so that I hardly think it 

 can be the same shell. Sandberger 3 unites these two species under the name of 

 M. ventricosus, but neither of his figures resembles the English shells. 



Macrochilus imbricat/us (Sow.), F. A. Romer 4 and Clarke, 5 differs in having a 

 smaller spiral angle, and a finely imbricated surface. 



5. Macrochilina sdbimbeicata, d'Orbigny, sp. PI. XVII, figs. 5 — 7. 



1841. Maceocheilus imbbicatus, Phillips (pars). Pal. Foss., p. 104, pi. xxxix, 



fig. 194 b (only). 

 1849. — subimbeicatus, d'Orbigny (pars). Prodrome, p. 63. 



1889. — tumescens, Whidborne. Geol. Mag., dec. 3, vol. vi, p. 30. 



Description. — Shell large, turbinated, smooth, acuminate. Spire elevated, 

 conical, of five or six rapidly and regularly increasing volutions. Sutures linear, 

 simple. Whorls somewhat convex, adpressed against the suture above. Body- 

 whorl very convex, and rather more prominent laterally than the other whorls 



1 1844, Goldfuss, ' Petref. Germ.,' vol. iii, p. 113, pi. cxcviii, fig. 14. 



2 Ibid., p. 113, pi. cxcviii, fig. 15. 



3 1853, Sandberger, ' Verst, Ehein. Nassau,' p. 233, pi. xxvi, figs. 15, 15 a. 



4 1843, F. A. Eomer, ' Harz.,' p. 30, pi. v, fig. 11. 



5 1884, Clarke, ' Neues Jahrb. f. Min.,' Beil.-Band iii, p. 367, pi. v, figs. 19, 20. 



