The Ohio T^aturalist, 
PUBLISHED BY 
The Biological Club of the Ohio State University, 
Volume V. NOVEMBER, 1904. No. 1. 
TABLE OF CONTENTS. 
Osborn— Notes on South American Hemiptera-Heteroptera 195 
Kellerman and Gleason— Notes on the Ohio Ferns 205 
SCHAFFNER — Leaf Expansion of Trees and Shrnbs 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 Hackherry 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 purchased 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 Dep.artment of Zoology and Entomology, O. S. U., No. 20. 
