268 
Loxonema eugifera, J. Fhillips} 
ri. xxiir, Tig. 21. 
Jilelcinia vugif evci , J. Phillips, 1836, Geol. Yorkshire, II, p. 229, pi. 16, fig. 26. 
CJlGlunitzia ,, L. G. de Koninck, 1813, Uescr. Aniin. Poss. Terr. Garb. Pelg., p. 162, 
pi. 41, fig. 2. 
Loxonema ,, J. Morris, 1813, Cat. Brit. Foss., p. 150. 
5, ,, F. McCoy, 1855, Brit. Pal. Foss., p. 515. 
Chemnitz la ,, E. d’Eichwald, 1860, Lethasa Eossica, I, p. 1116. 
This shell is elongated, conical, and composed of fourteen to sixteen 
convex spiral whorls. Each whorl is ornamented, according to its age, with 
from twelve to fifteen tubercles, elongated in the direction of the axis of the 
shell, but slightly oblique to that axis, and occupying the superior three- 
quarters of the total breadth of each spiral turn ; the inferior quarter is 
depressed and smooth, or simply striated crossways. The whole surface, 
including the tubercles, is covered with fine irregular arched lines of growth. 
The aperture is oval, and a little longer than broad ; the columella is covered 
by a thin callosity extending a little in front of the internal margin of the 
aperture, while the external margin is thin and sharp. 
Dimensions . — This species reaches a length of five or six centimetres. 
The Australian specimen sent me is only thirteen millimetres long, and its 
spiral angle 19°. 
Delations and Differences . — It would be difficult to distinguish this 
species from my L. similis before both had reached the adult stage, as there 
is not a constant difference in the degree of their spiral angles. Adults 
of L. similis differ by the absence of tubercles on the last whorl;, these 
tubercles are eonstant on the last rvliorl of L. rugifera. 
Horizon and Localities . — This species was first found by J. Phillips 
in the Upper Carboniferous Limestone of Bolland, Yorkshire ; afterwards 
d’Archiac and de Verneuil found it in that of Valdai, Lake liman, and 
Vitegra ; and M. d’Eichwald found it in that of Cosatchi-Latschi. I found 
it in limestone of the same age at Vise. Mr. IV. B. Clarke obtained it from 
a white limestone at Burragood. I mueh doul)t if the Devonian species 
described by J. Phillips under the same name is identical with it. 
* [Compare R. Etheridge, .Tunr., Geol. and Pal. Q’laiid., 1892, p. 285. t. 15, f. 17 ; Proca. Linn. Soc. N. S. 
Wales, 1895, IX (2), p. 53(5. -W.S.ll.] 
