28 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.54. 



No new species of fossils are described, but a couple of plates of 

 figures of Rhynchonella mainensis Billings and other species from the 

 Square Lake limestone, illustrating the variability expressed by rep- 

 resentatives of this one genus in the restricted limits of this one 

 limestone bed, are given and discussed. 



II. The Silurian-Devonian boundary in North America, I, The 

 Chapman Sandstone fauna. Amer. Journ. Sci., vol 9 1900 pp 

 203-213. ' ' 



III. The Silurian-Devonian boundary in North America. A dis- 

 cussion of the problems involved in determining geological boundary 

 planes. Bull. Geol. Soc. Amer., vol. 11, 1900, pp. 333-346. 



IV. Note on fossils collected by N. S. Shaler from the Cobscook 

 Bay region of Washington County, Maine, incorporated in Smith 

 and White's paper on The Geology of the Perry Basin in Southeastern 

 Maine. U. S. Geol. Survev, Professional Paper No. 35, 1905, pp 

 21-27. 



V. A new Brachiopod, Bensselaeria mainensis, from the Devonian 

 of Maine. Proc. U. S. Nat. Mus., vol. 32, pp. 267-269. 



In this paper the new species, Bensselaeria mainensis, is described 

 and figured. The types are from the Chapman sandstone of Aroos- 

 took County, Maine. The types are deposited in the United States 

 National Museum. 



VI. On the revision of the Mollusk genus Ptermea Goldfuss. Proc. 

 U. S. Nat. Mus., vol. 34, pp. 83-90, published April 17, 1908. 



In this paper the new genera Tolmaia, Follmanella, Actinopterella, 

 and Oornelliies are defined. This revision was incident to the classi- 

 fication and description of the Pterinoid fossils of the Chapman sand- 

 stone formation. 



VII. Some new MoUusca from the Silurian formations of Washing- 

 ton Comity, Maine. Proc. U. S. Nat. Mus., vol. 42, No. 1908, pp. 

 381-398, with plates 49 and 50. Published July 3, 1912. 



In this paper the new genus Eurymyella was defined and the 

 species, Eurymyella shaleri, E. shaleri, var. hreva, var. longa, and var. 

 minor, and Eurymyella angularis, E. simulans, E. plana, E. recta, E. 

 convexa, and E. denhowensis. The new genus Cliopteria and species 

 C. Ucostata and C. unicosta, Pterinea laxata, and the new species 

 StreptotrocTius ione, S. regularis, S. carinatus, and S. sulcatus were 

 described and figured. 



VIII. Correlation of the Paleozoic Fauna of the Eastport Quad- 

 rangle, Maine. Bull. Geol. Soc. Amer., vol. 23, 1912, pp. 349-356. 



In this paper the formations of the Eastport quadrangle are sub- 

 divided into six (unnamed) divisions based on the faunal character- 

 istics of the sediments. 



IX. New Species of Silurian Fossils from the Edmunds and Pem- 

 broke formations of Washington County, Maine. Proc. U. S. Nat. 

 Mus., vol. 45, July, 1913, pp. 319-352, with plates 29-31. 



