﻿CAPULUS. 217 



It does not exactly agree with any of the figures of Acroculia vetusta in 

 Phillips's ' Pal. Foss.,' but it presents most likeness to the indistinct fragment 

 given in his fig. 169 a, which may perhaps belong to it ; and of this, his fig. 169 c 

 may perhaps be another view. It appears a sufficiently well-de6ned form, although 

 there is considerable variation in the growth of the different specimens. It differs 

 from all the accompanying species by the possession of tubercles, which seem 

 always present, though they vary in number and distinctness. 



Affinities. — It most nearly approaches Capulus galeritus, n. sp., which, however, 

 is more depressed and narrower, and has a larger and more regular spiral, and 

 also shows no tuberculation. 



In the tuberculated variety of Pileopsis prisca, Goldf., 1 the tuberculation is, as 

 shown by numerous examples from the Eifel, 2 of a larger and more pronounced 

 character, and the shell is more definitely coiled. From the smoother variety, 

 which is described by Kayser, 3 it is more difficult to separate it, although the 

 latter seems more flat and generally more definitely coiled, and its mouth is 

 more oblique. The general appearance, however, of our specimens leads me to 

 think that it must be distinct, and certainly none are in the slightest degree 

 similar to typical Eifelian examples of that species. 



13. Capulus galeritus, n. sp. PI. XXII, figs. 3, 3 a, 4. 



1834. Bellekophon, sp., Steininger. Mem. Soc. Geol. Fr., vol. i, pt. 2, p. 368, 



pi. xxii, figs. 3, 3 a, 3 b. 



Description. — Shell rather large, depressed, rather narrow, elongate, loosely 

 and elliptically coiled. Spire free, large, much recurved, consisting of more than a 

 volution, sunk beneath the highest plane through the shell, but facing upwards. 

 Apex very minute, apparently nearly approximate to the plane of the mouth. 

 Body-whorl regularly increasing, subcircular or slightly oval in section, being 

 most convex on the back, and somewhat flattened and produced below near the 

 mouth ; back very convex in the horizontal direction, but becoming less so near 

 the mouth. Mouth not large, apparently oblique. Peristome sinuous. 



Size. — Width 30 mm., depth 18 mm., height 17 mm. 



Localities. — There is a specimen in the Museum of Practical Geology, and 

 another in the British Museum from Wolborough ; another in the Battersby 



1 1844, Goldfuss, ' Petref. Germ.,' vol. iii, p. 9, pi. cxlviii, figs. 1 b—d. 



2 Ibid., pi. clxviii, fig. 1 a. 



3 1878, Kayser, ' Abbandl. Geol. Specialk. Preuss.,' Baud ii, pt. 4, p. 94, pi. xvi.fig. 5, and pi. xx, 

 figs. 11, 14, 15. 



