BULLETIN No. 4, VOL. IV. 



TABLE OF CONTENTS. 



Nos. Titles. Pages. 



ART. XXXIL— The Fossil Insects of tlie Green River Shales. By 



Samuel H. Scudder, Cambridge, Mass. 747-776 



ART. XXXIII. —Report on the Collection of Pishes made by 

 Dr. Elliott Coues, U. S. A., in Dakota and 

 Montana, during the seasons of 1873 and 1874. 

 By David S. Jordan, M. D 777-800 



ART. XXXIV.— Catalogue of Phsenogamous and Vascular Crypto- 

 gamous Plants collected during the summers 

 of 1873 and 1874, in Dakota and Montana, 

 along the forty-ninth parallel, by Dr. Elliott 

 Coues, U. S. A. ; with which are incorporated 

 those collected in the same region at the same 

 times by Mr. George M. Dawson. By Prof. J. 

 W. Chickering 801-830 



ART. XXXV.— On some Striking Products of Erosion in Colorado. 



By F. M. Endlich, S. N. D 831-864 



ART. XXXVI.— Paleontological Papers No. 8: Remarks upon the 



Laramie Group. By C. A. White, M. D 865-876 



ART. XXXVIL— Synonymatic List of the American Sciuri, or Ar- 

 boreal Squirrels. By J. A. Allen. (See p. 905.) 877-887 



