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uJi.LIBRAR 



The Ohio ^f^aturalisf^^^^ 



PUBLISHED BY 



The Biological Club of the Ohio State Uni'versity, 

 Volume V. NOVEMBER, 1904. No. 1. 



TABLE OF CONTENTS. 



OSBOKN— Notes on South American Hemiptera-Heteroptera 195 



Kellerman and Gleason— Notes on the Ohio Ferns 205 



tiCH AFFNER— Leaf Expansion of Trees and Shrubs in 1904 210 



Riddle— Unusual Color Marking in the Prairie Mole 213 



Gleason— A New Sunflower from Illinois 214 



SCHAFFNER— Six Nutating Plants 214 



SCHAFFNER— Twigs of the Common Hackberry 215 



Frank— Meeting of the Biological Club 216 



NOTES ON SOUTH AMERICAN HEMIPTERA-HETEROPTERA.* 



Herbert Osborn. 



The following notes are based mainly upon collections made 

 in Peru and Bolivia by William J. Gerhard during the years 1898- 

 1899, and ptirchased by the writer from Mr. Weeks of Boston, 

 the package having been entirely undisturbed, and a collection 

 made at Bartica, British Guiana by Mr. H. S. Parrish during the 

 spring of 1900. Collections by these parties are entered without 

 further reference. Other material has been secured from various 

 sources but recorded here so as to make the notes as complete as 

 possible based upon the material in the author's collection. The 

 collection made by Mr. Parrish in Guiana was made at the same 

 time and in practically the same localities as those furnished by 

 Mr. Crew and reported upon by Mr. Van Duzee. (Trans. Ent. 

 Soc, Vol. 27, p. 343, 352, Dec, 1901.) 



Very many species therefore in Mr. Van Duzee's list and mine 

 are similar and I have avoided repetition of data included in his 

 paper and in some instances the species. Some additional spe- 

 cies however, are to be noted and in some cases variations worthy 

 of note have been observed. The arrangement is practically 

 that of Lethierry and Severin in the' 'Catalogue General des Hem- 

 ipteres." The types of the new species described are in the 

 author's collection. 



♦Contributions from the Department of Zoology and Entomology, O. S. U., No. 20. 



