42 CARBONIFEROUS LAMELLIBRANCHIATA. 



In this paper a full list of synonyms with description and figures are given of 

 Peden Soiverbii, M'Coy, and Aviculopecten ellipticuSy Philhps. The Aviculo'pecten, 

 sp., of the Explanation of Sheet 23 (p. 103) is now named A. oryza, without a 

 figure ; but Posidonomija corrugata, of the same memoir, is now redescribed and 

 figured. 



1875. In the 'Report of the Explorations and Surveys West of the 100th 

 Meridian,' vol. iv, pt. 1, issued in 1875, C. A. White describes (p. 146, &c.) 

 from Permo-Carboniferous beds — 



Aviculopecten accident alis. 



— Coreyanit,s. 



— MacCoyi. 



— ? interlineatus. 

 Pinna peracuta ? 

 Monopteria Marian. 



Myalina, sp. ? 



— .'' S waller i. 

 BakevelUa parva. 

 ScJiizodus Wheeleri. 

 Allorisma subcimeata, var. 



Edmondia? tapesiformis. 

 Promacrus Andrewsi. 



In the same year, in " Carrol, Montana, to Yellowstone National Park, Ludlow," 

 p. 143,^ R. P. Whitfield described Pinna Ludlovi from Carboniferous beds. 



1875. In the 'Report of the Geological Survey of Ohio,' F. B. Meek describes 

 and figures in vol. ii, part 2, Palaeontology, several Lamellibranchs from the 

 Waverley Sub-Carboniferous series, pp. 292 — 312, amongst which are the following 

 new forms : 



Aviculopecten WincheUi. 

 PalcBoneilo Bedfordensis. 



The nine species described in the ' Proceedings of the Academy of Natural 

 Science of Philadelphia ' for 1871 (pp. 159 — 168) are here figured for the first time. 



The following Lamellibranchs (all new except two) are described and figured 

 from the Coal-measures (pp. 330 — 344) : 



Aviculopecten {Strehlopteria ?) Sertzeri. 

 Placunopsis recticardinalis. 

 Posidonomyafracta. 

 ■ Macrodon obsoletus, "\ mentioned in the List of Carb. Foss. from 



Yoldia Stevensoni, > "West Virginia. (Report, Regent's Univer- 



loldia {Palaoneilo) carlonaria, J sity of West Virginia.) 

 Schizodzis cuneatus. 



Aviculopinna Americana (Pal. East Nebraska). 

 Pleuropkorus tropidophorus. 

 Solenomya ? anodontoides. 

 Astartella Newhevryi. 



— sp. 



— varica (McChesney). 

 Cypricardinia ? carhonaria. 

 Allorisma costata, Meek and Worthen. 



1 As quoted by C. D. Walcott, ' Pal. Eureka,' &c., p. 225. 



