CRITICAL BIBLIOGRAPHY. 29 
delphia’ for 1860, p. 496, Messrs. F. B. Meek and A. H. Worthen publish a 
paper entitled “Descriptions of New Carboniferous Fossils from Illinois and 
other Western States,” in which is described Myalina recurvirostris from the 
Coal-measures, [linois. 
1864. In the volume of the same Society for 1864 the same authors, on p. 246, 
describe Plewrophorus subcostatus from the Coal-measure of Illinois, which I believe 
to be from the description a form of Anthracomya. 
1886. In vol. i of the ‘Proceedings of the Chicago Academy of Sciences,’ 
p. 18, is a paper by Messrs. F. B. Meek and A. H. Worthen entitled “ Descriptions 
of Paleozoic Fossils from the Silurian, Devonian, and Carboniferous Rocks of 
Illinois and other Western States,’’ in which they describe as new species Anthra- 
coptera ? fragilis from the Keokuk division of the Subcarboniferous series and 
Myalina meliniformis from Coal-measures of Illinois. 
1866. F. B. Meek redescribes and figures in the Report of the ‘ Geol. Surv. 
Illinois,’ vol. 1, Palzsontology— 
Myalina concentrica, Meek and Worthen, pl. xix, figs. 3 a, 36, 3 ¢, p. 281. 
* angulata, pl. xxiii, figs. 7 a and 4, p. 300. 
Fr recurvirostris, pl. xxvi, figs. 9 a—e, p. 334. 
5 Swallovi, McChesney, pl. xxvii, figs. 1 a—d, p. 341. 
5 meliniformis, Meek and Worthen, pl. xxvii, fig. 3, p. 343. 
1868. In the ‘Transactions of the Geological Society of Glasgow,’ read 
February 8th, 1868, vol. iii, 1871, p. 96, is found a valuable paper entitled “ On 
the Upper Coal-measures of Lanarkshire,” by William Grossart, the object of which 
is to correlate the various beds by their fossil contents. He states, p. 102, “Of 
the genus Anthracosia, the species A. acuta, A. aquilina, A. ovalis, A. centralis, 
A, phaseolus, are found in most of the beds of Kiltongue coal, but no further. 
Anthracomya modiolaris, Anthracoptera modiolaris, and A. carinata prevail in most 
of the beds. . . . . Anthracoptera quadrata appears to have had a very 
limited range, being seldom, if at all, seen beyond the region of the Splint Coal.” 
Anthracosia rugosa [evidently robusta] is first met with in the 
Drumgray Coal, all other species of the genus having now disappeared.’ This is 
the bed from which so many good specimens of A. robusta are obtained at Shotts. 
He appends the following note :—“ The genus Anthracosia appears to be confined 
to the Upper Coal-measures of Lanarkshire.” 
In the same volume, p. 283, in a paper by Mr. Robert Craig on ‘The 
Carboniferous Basin of Dalry,” mention is made of the occurrence of Myalina 
crassa at Roughwood, Lyonshield, and Broadstone. 
1870. Romer described, in 1870, a little bivalve-like Modiola from the “ Coal- 
group, Charlotte,’ near Czernitz, in the “Geologie und Paliontologie von 
Oberschlesien,” foot-note to p. 76, and “‘ probably identical with Modiola, sp. 
