﻿184 DEVONIAN FAUNA. 



their surface, slightly convex near the sutures, and slightly overhanging the 

 lower suture. 



Size. — A fragmentary specimen measures about 33 mm. in height and about 

 16 mm. in diameter. 



Locality. — Wolborough. There is a specimen in the Museum of Practical 

 Geology, another in the Torquay Museum, and a third in Mr. Vicary's Collection. 



Remarks. — These fossils are all very defective, and preserve no trace of either 

 the surface-markings, or the base, or the aperture, so that it is impossible to deter- 

 mine whether any part of the body-whorl remains. Their shape, however, is 

 peculiar, and quite different from any of the other fossils that occur in tbese 

 localities. They are distinguished by their conical form and their flattish narrow 

 whorls. The specimen in the Torquay Museum appears to be deformed, as the 

 apical part of it is considerably recurved, so that the perpendicular from the apex 

 perhaps fell actually outside the circumference of the base. The nucleus is present, 

 and is rather larger than the proximate whorl, which is very irregular, and 

 accounts for much of the deformity. The whorls in this specimen seem 

 narrower and more convex than those of the other, so that I am not certain 

 whether it belongs to the same species, but it is in such a poor state of preserva- 

 tion that but little can be made of it. 



Melania subangulata, Goldfuss, 1 has a much wider and deeper suture. 



As far as can be judged from the cast, this shell comes very close to Michelia 

 exaltata, F. A. Romer. 2 It has about the same apical angle, but is specifically 

 distinguished by having somewhat broader and more convex whorls, although not 

 nearly so much so as Michelia distracta, F. A. Romer. 3 It is, however, so similar 

 that it most probably belongs to the same genus as do those shells. 



4. Genus. — Spanionema, 4 gen. nov. 



Shell very elongate, turriculated, of many almost wholly exposed, narrow, 

 convex whorls. Mouth subcircular, produced below. Surface probably smooth, 

 bearing occasional discontinuous varices. Umbilicus minute. 



The position of this genus (or perhaps sub-genus), which is formed for the species 

 described below, seems to me at present doubtful. In general shape it approaches 

 Loxonema, two or three species of which have been described as bearing varices ; 

 and near this genus, by the advice of Mr. Etheridge, I have provisionally 



1 1844, Goldfuss, ' Petref. Germ.,' vol. iii, p. 109, pi. cxcvii, fig. 11. 



2 1852, F. A. Komer, ' Harz.,' pt. 2, p. 74, pi. xi, fig. 17. 



3 Ibid., pt. 2, p. 74, pi. xi, fig. 18. 



4 From aKuviui, rare, and ri/juo, a thread. 



