LOXONEMA. 41 



2.' Genus — Loxonema, Pfiillips, 1841. 

 1. Loxonema Hallit, n. sp. Plate V, fig. 8. 



Description. — Cast small, elongate, tapering, of seven or eight whorls. Spire 

 conical, much larger than the body-whorl. Sutures very slight. Whorls nearly 

 flat and very broad. Apex acute. Surface apparently smooth. 



Size. — Height about 12 mm. ; width about 4 mm. 



Localitij. — One specimen from Vicarage Well, Pilton, is in the Barnstaple 

 Athenaeum. 



BemarJcs. — This appears to be an almost perfectly conical shell, the sutures 

 being very slightly indented, and the whorls obliquely flattened. Though the 

 only specimen is in a very poor and rather crushed condition, it seems to give 

 sufficient evidence of its distinctness from any other Devonian forms with which 

 I am acquainted. 



Affinities. — It comes very near in general shape to the Carboniferous 

 Loxonema leviusculum, de Koninck,^ but differs in having considerably broader and 

 fewer whorls, and probably a larger body-whorl. Its mouth is not preserved, so 

 that its genus can be only decided by its general affinity to other species ; and as 

 numerous similar shapes are referred by de Koninck to Loxonema, I have placed it 

 in that genus. 



It bears considerable resemblance to Macrochilina ejecta," from South Devon, 

 especially in the breadth and flattening of its whorls, but differs in its more 

 elongate spire. 



2. Loxonema trochleatum, Milnster, sp. Plate V, figs. 4, 4 a, 5, 5 a. 



1840. TuREiTELLA TKOCHLEATA, 3Iiinster. Beitr., pt. 3, p. 88, pi. xv, fig. 18. 

 1843. Loxonema sueulata, F. A. Homer. Verst. Harzgeb., p. 31, pi. viii, figs. 



12, 12 a. 

 1853. — — Sandlerger. Verst. Eheiu. Nassau, p. 229, pl.'^xxvi, 



fig. 10. 



Description. — Shell very small, many-whorled, slowly increasing, aciculate. 

 Whorls nearly as broad as high, with a narrow, oblique, flat rim under the suture, 



^ 1881, de Koninck, ' Ann. j\1us. Eoj, H. K. Belg.,' vol. vi, p. 44, pi. iv, ligs. 28, 29. 

 2 1891, Whidborne, ' Dev. Fauna,' vol. i, p. 170, pi. xvii, fig. 13. 



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