LOXONEMA. 43 



in being mucli shorter shells with fewer, narrower, and more rapidly increasing 

 whorls. 



Their smooth surface at once distinguishes them from L. Hennahianum,^ to which 

 they have been referred, as well as from Holopella antiqua, Goldfuss/ sp., which I 

 formerly confused with that shell. Since describing certain Lummaton fossils ^ 

 under the name of H. Sennaliiana, Sowerby, I have seen the type specimen of that 

 species in the Museum of the Geological Society, and find that it is evidently distinct 

 from them. It is very much more coarsely ribbed than they are, and is more 

 nearly akin to L. nexile^ Phillips. Those Lummaton shells ought therefore to bear 

 the name Holopella antvjna, Goldfuss, sp., instead of H. Hennahiana, Sow., which 

 must be restricted to the Plymouth species. 



4. LoxoNEMA ANGLicuM, d'Orbignij. Plate V, fig. 6. 



1841. LoxoNEMA ETTGiFERA, FkHUps. Pal. Toss., p. 101, pi. xxxviii, fig. 188. 



1849. — ANGLiCA, d^Orhigny. Prodrome, vol. i, p. 62. 



1867. — EUGiFEUUM, Trenhner. PalJiont. Novitat., pt. 1, p. 11, pi. i, 



fig. 19. 

 1884. — — Clarke. Neues Jahrb. f. Min., Beil.-Band 8, 



p. 366, pi. V, figs. 24, 25. 

 1895. — BUGiFEEA, Venukoff. Syst. Dev. Chaine des Mongodjares, 



p. 153, pi. iii, fig. 12. 



Description. — Shell large, many-whorled, subiilate, very elongate, with 

 apparently rather undulating sides to the spire. Apex aciculate. Spire consisting 

 of ten or eleven very broad whorls, which are higher than the width of the shell 

 near the apex, and gradually diminish in ratio, so that the height of the tenth 

 whorl is about two-thirds of its width. Suture simple, shallow, obtuse. Whorls 

 sloping from the suture in a sigmoid curve, the upper part being slightly and 

 obliquely concave, and the lower part wide and convex ; ornamented with about 

 twelve very large, prominent, transverse, rounded ribs, which are largest in the 

 central parts of the whorl, and are rather oblique and slightly sigmoid, and so 

 arranged that they frequently form continuous ribs down the spire. " Mouth 

 roundish." 



Size. — A specimen in the Museum of Practical Geology measures 45 mm. high 

 by 11 mm. wide. 



Localities. — There are four specimens from Braunton Down in the Museum of 

 Practical Geology, and one from Frankmarsh in Mr. Hamling's Collection. A 

 very poor cast from Kingdon's in the Barnstaple Athenseum appears to belong to 

 this species. 



1 1840, Sowerby, ' Geol. Trans.,' ser. 2, vol v, pt. 3, pi. ivii, fig. 22. 



2 1844, Goldfuss, ' Petref. Germ.,' vol. 3, p. 110, pi. cxcvii, fig. 14. 



3 1891, Whidborne, ' Dev. Fauna,' vol. i, p. 228, pi. xviii, figs. 16, 16 a. 



