﻿MACROCHILINA. 171 



examples in the Museum of Practical Geology, and two very poor specimens 

 which appear to belong to the same species in Mr. Vicary's Collection. 



Remarks. — This species seems sufficiently distinct. It is marked by the 

 almost conical form of the spire, caused by the flatness of the whorls and their 

 regular decrease in size, and by the large body-whorl, which is symmetrical with 

 the whorls of the spire. The species which most nearly approaches it is 

 Macrochilina elevata, but that shell has a longer spire and more convex whorls. 



These Devonshire shells seem specifically identical with Ph. fusiformis, 

 Goldfuss ; but totally differ from the Ordovician Buccinum fusiforme, Sow., 1 

 whose whorls are as wide as high, and which appears to belong to this genus. 

 M. ventricosus, Sandberger, 2 appears to have a longer spire, more convex whorls, 

 and a shorter and wider body-whorl. Sandberger's two figures, however, seem 

 rather different. 



In general shape it agrees exactly with Loxonema fusiforme, F. A. Roiner, 3 and 

 L. ovatum, F. A. Romer,* but it differs in being smooth instead of striated. 

 Clarke's 5 description shows that it only differs from L. fusiforme, F. A. Romer, in 

 not bearing striaa. 



10. Macrochilina otclostoma, n. sp. PI. XXVII, fig. 1. 



Description. — Shell small, elevated, conical, of five or six whorls. Apex 

 acuminate. Suture wide, moderately deep. Whorls decidedly and evenly 

 convex, much exposed. Body- whorl about two-fifths the height of the shell. 

 Mouth subcircular. Outer lip convex and much expanded. Inner lip concave, 

 oblique below, callous, somewhat thickened. Surface smooth. No umbilicus. 



Size. — Height 9 mm., width 6 mm. 



Locality. — Lummaton (?). There is a single small specimen in the Torquay 

 Museum. 



Remarks. — Much cannot be said about the little fossil here described, the 

 single specimen of it which I know being so embedded in the matrix that only 

 one side of it is exposed. I was at first inclined to place it in the genus Turbo or 

 Phasianella, on account of the shape of its mouth. It differs from the species of 

 Macrochilina which accompany it in this particular, and in the exposure and 



1 1839, Sowerby, in Murcliison's ' Sil. Syst.,' p. 642, pi. xx, fig. 19. 



2 1853, 8aiidberger, ' Verst. Kbein. Nassau,' p. 233, pi. xxvi, figs. 15, 15 a. 



3 1850, F. A. Komer, ' Beitr.,' pt. 1, p. 35, pi. v, fig. 13. 

 * Ibid., p. 35, pi. v, fig. 16. 



5 1884, Clarke, ' Neues Jahrb. f. Min.,' Beil.-Band iii, p. 366. 



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