DEVONIAN FISHES OF IOWA 261 



Traquair, from the Calciferous sandstone series of Eskdale, 

 Scotland. The fragmentary specimen affords the only indica- 

 tion thus far obtained of the presence of Palseoniscid fishes in 

 the Chemung of the eastern Appalachian area. 



Bhadinichthys alberti (Jackson). 



1851. Palceoniscus alberti C. T. Jackson, Rept. Albert Coal Mine,* p. 22, pi. 



1 , rig. 1, pi. 2, figs. 2-8 (? non 7) . 



1852. PalcEoniscus alberti C. T. Jackson, Proc. Boston Soo. Nat. Hist. 4, 



p. 138. 



1853. Palceoniscus alberti P. G. Egerton, Quart. Journ. Geol. Soc. 9, p. 115. 

 1868. Palceoniscus alberti J. W. Dawson, Acadian Geology, p. 131, fig. 62. 

 1877. Bhadinichthys alberti R. H. Traquair, Quart. Journ. Geol. Soc. 33, 



p. 559. 



1877. Palceoniscus alberti J. W. Dawson, Canadian Nat. n. s., 8, p. 338. 



1878. Palceoniscus alberti J. W. Dawson, Acadian Geology, 3d Ed., p. 231, and 



Suppl., p. 100. 

 1889. Bhadinichthys alberti S. A. Miller, North American Geo), and Pal., p. 



611, fig. 1172 (after Dawson). 

 1889. Palceoniscus alberti J. P. Lesley, Dictionary of Fossils, etc. Geol. Surv. 



Penna., Rept. P4, p. 584, figure. 



A small robust species, attaining a length of about 8 cm. 

 Maximum depth of trunk contained about four times in the total 

 length. Head relatively small, and external bones ornamented 

 with coarse waved ridges, sometimes interrupted. Dorsal fin 

 arising slightly in advance of the anal, and the latter much 

 elongated. A continuous series of enlarged ridge-scales along 

 the back from the occiput to the upper lobe of the caudal fin; 

 flank-scales as broad as deep; scale-ornament consisting of ir- 

 regular fine longitudinal striae, more or less oblique, terminat- 

 ing in a number of coarse serrations (5-8) along the posterior 

 border. 



Formation and locality. Lower Carboniferous; Albert coun- 

 ty, New Brunswick. 



Bhadinichthys cairnsi (Jackson). 



1851. Palceoniscus cairnsii C. T. Jackson, Rept. Albert Coal Mine, p. 23, pi. 1, 



fig. 3. (Plates not issued with text). 



1852. Palceoniscus cairnsii C. T. Jackson, Proc. Boston Soc. Nat. Hist. 4, 



p. 139. 



* Plates not issued with text, and missing in all copies examined. Apparently 

 a few proof impressions were distributed privately, one set being preserved with 

 the Redfield collection of fossil fishes at Yale. The original specimens represented 

 in PI. 1, figs. 1-3, 5, and PI. 2, figs. 2, 3, 7, are now the property of the Museum of 

 Comparative Zoology at Cambridge. 



