45 
published hy Murchison. Unfortunately I have not had the opportunity of 
comparing specimens themselves. It will he necessary to await the discovery 
of complete specimens before definitely assigning it to a species. 
These pygidia are suhsemi-elliptical in shape, and surrounded hy a 
comparatively wide limb. The axis is only half the width of the lateral 
lobes, and is made up of six or seven rather faintly-marked rings ; the rilis 
are obtuse and faintly visible ; those wdiich can he seen have a sutural 
furrow. 
Ilorizon and Localities . — hirst recorded hy Murchison in the Wenlock 
limestone at Dudley, this species has been found hy Loven in limestone of 
the same age in Gothland. It has been found in Australia at Yarralumla. 
Gem IS — Lie HAS, I) aim an . 
Among the Trilohites that Mr. Clarke submitted to me for examination 
only a single specimen of Lichas has been found, hut it is so incomplete and 
badly preserved that it has been impossible for me to determine the species. 
It is fairly large, and in the irregular mode of granulation approaches Lichas 
palmata, Barrande.^ It occurs in a partly schistose argillaceous rock at Eock 
Elat Creek. 
Gewzts— BEOM TEUS, Goldfass. 
1. Bhonteus Bahtschi, J. Barrander 
Bronteus Bartschi, J. Barraude, ISiG, Not. Prelim, sur les Trilob., p. GO. 
,, Ilawle and Corda, 1846, Prodr. ciner Mon. Bohm. Trilob., p. 58. 
,, suhtriangidans, Idern, id., ihid, p. 57. 
,, carinatus, Idem, id., ihid, p. 59. 
,, Bartschi, J. Barrande, 1852, Syst. Sil. Bobeme, I, p. 870, pi. 46, fig. 19-31. 
I am acquainted with the pygidinm of this species only, hut it agrees 
so completely with the figures and descriptions given hy Barrande that I 
have no doubt as to its identity with the .Bohemian species. The shape is 
semi-oval, the surface, slightly and uniformly arched in the median region, 
flattens towards the edge without becoming concave in every case. Barrande 
observes that the line of articulation is stramht throughout almost all its extent 
and does not become curved till near the ends. The rudiment of the axis, 
1 [FiVe Katte (F.) — Procs. Linn. Soc. X. S. Wale?, 1886, I (2), p. 1065, pi. 15, fig. 15 ; op. cit., 1887, II (2), 
p. 95, pi. 1, fig. 6.— W.S.I).] 
- [Messrs. E. Etheridge, Junr., and J. Mitchell have described the Australian Species as ISronieus JenTcinsi, 
Procs. Linn. Soc. N. S. Wales, 1890, V (2), Pt. 3, pp. 501-501, pi. 18. See also Jenkins (J.) Bronteus Bartschi, 
op. ci'., 1879, III, Pt, 3, pp. 2)7-221, pi. 17, figs. 3-6.— W.S.D.] 
