BIBLIOGRAPHY OF ROBERT PARR WHITFIELD 393 



1878 



Remarks on some lamellibranchiate shells of tbe Hudson river group, with 

 descriptions of four new species. Journ. Cincinnati Soc. Nat. Hist.. I, 

 pp. 137-141, pi. 6, figs. 5-8a. 



1879 



Discovery of specimens of Maclurea magna, of the Chazy, in the Barnegat 

 limestone, near Newburg, New York. Amer. Journ. Sci., 3 ser., XVIII, p. 



1880 



Paleontology of the Black Hills of Dakota. Pp. 325-468, pll. 1-16, in Henry 



Newton and Walter B. Jenney's "Report on the Geol. and Resources of 



the Black Hills of Dakota." 4°, Washington, D. C. 

 Notice of new forms of fossil crustaceans from the upper Devonian rocks of 



Ohio, with descriptions of new genera and species. Amer. Journ. Sci., 



3 ser., XIX, pp. 33-42. 

 Notice of the occurrence of rocks representing the Mareellus shale of New 



York, in central Ohio. Proc. Amer. Assoc. Adv. Sci., 2Sth meeting (1879), 



pp. 297-299. 

 On tbe occurrence of true Lingula in the Trenton limestone. Amer. Journ. 



Sci., 3 ser., XIX, pp. 472-475, 2 text figs. 



1881 



Description of a new species of Crinoid from the Burlington limestone, at 



Burlington. Iowa. BuU. Amer. Bins. Xat. Hist., I, pp. 7-9, pll. 1, 2. 

 Remarks on Dictyopbyton, and descriptions of new species of allied formss 



from the Keokuk beds at Crawfordsville, Ind. Ibid., I, pp. 10-20, pll. 3, 4. 

 Observations on the purposes of the embryonic sheaths of Endoceras. and 



their bearing on the origin of the siphon in the Orthocerata. Ihid., I, 



pp. 20-28, 4 figs. 

 Notice of a new genus and species of air-breathing mollusk [Anthracopupa 



oJiioensis] from the Coal-measures of Ohio, and observations on Dawson- 



elJa. Amer. Journ. Sci., 3 ser.. XXI. pp. 125-128, 6 text figs. 

 Observations on the structure of DictyopJiyton and its affinities with certain 



sponges. Ibid., 3 ser., XXII, pp. 53-54. 

 On the nature of Dictyophyton. Ihid.. 3 ser.. XXII, p. 132. 



1882 



Descriptions of new species of fossils from Ohio, with remarks on some of the 



geological formations in which they occur. Annals N. Y. Acad. Sci., II, 



pp. 193-244. 

 Description of Tjijnuura (Bulimn(ra) mcgasoma Say. with an account of 



changes produced, iu the offspring of unfavorable conditions of life. BuU. 



Amer. Mus. Nat. Hist., I, pp. 29-37, pi. 5. 

 On tbe fauna of the Lower Carboniferous limestone of Spergen Hill, Ind., 



with a revision of the descriptions of its fossils hitherto published, and 



