148 
Horizon and Localities. — This species, like P. semireticiilatus, Martin, 
which it nearly always accompanies, and from which it is occasionally difficult 
to distinguish it, is very widespread throughout the Carboniferous System, 
where it is found in all the beds. Recently its presence has been detected by 
Mr. Toula among the Spitzbergen fossils collected by Dr. Rrasch. The Austra- 
lian specimens come from Buchan, Glen William, Harper’s Hill, Burragood, 
and Colocolo, where they occur in grey or brownish limestone. Mr. McCoy 
calls attention to its occurrence in a hard black shale at Lewinbrook ; and Mr. 
R. Etheridge, Senior, found it on the banks of the Hon, Queensland. 
Prodtjcttjs punctatus, Soioerhy. 
PL XI, Pig. 2} 
Conchce pilosce, lire, 1793, Hist. Ruthergleu, p. 316, pi. 15, fig. 7. 
A.noniites punctatus, Martin, 1809, Petrif. Derbiens., p. 8, pi. 37, fig. 6 (fig. 7 and 8 excl.) 
Trigonia rugosa, Parkinson, 1811, Organic Eemains, III, p. 177, pi. 12, fig. 11. 
Lroductus punctatus, Sowerby, 1823, Min. Conch., IV, p. 22, pi. 323. 
,, „ E, de Verneuil, 1847, Bull. Soc. Gieol. France, IV (2), p. 706. 
„ „ L.-G. de Koninck, 1847, Eech. Anim. Foss., I, p. 123, pi. 12, fig. 2. (b 
„ ,, Quenstedt, 1852, Handb. Petrefaktenkunde, p. 491. 
,, ,, Sliumard, 1854, in E. Marcy’s Exploration o£ the Eed Eiver of 
Louisiana, p. 188, pi. 1, fig. 5, and pi. 2, fig. 1. 
,, M. V. Grfinewaldt, 1860, Mem. Acad. Imp. St. Petersbourg, II (7), 
p. 125. 
,, „ II. B. Geinitz, 1866, Carb. u. Dyas in Nebraska, p. 55. 
,, „ F. Eoemer, 1870, Geol. v. Ober-Scblesien, p. 60, pi. 7. fig. 2. 
„ ,, L.-G. de Koninck, 1873, Eech. Anim. Foss., II, p. 30, pi. 1, fig. 19. (b 
„ ,, F. B. Meek and A. H. Wortlien, 1873, Geol. Survey Illinois, V, 
p. 569, pi. 25, fig. 13. 
„ „ F. Toula, 1875, Sitzung. K. Akad. Wissen. Wien, LXXXI, p. 549. 
This beautiful species, which was one of the first to be described and 
figured, is one of the easiest to distinguish, and is represented, among the 
fossils collected by the Rev. W. B. Clarke, only by a fragment, and by a fairly 
perfect specimen of the dorsal valve. This dorsal valve is, however, very 
1 [PI. 10, fig. 2.— W.S.D.] 
“ For reference to Synonymy. 
’ Ihidem, 
