jPSYCHE. 



notes on the winter insect fauna of vigo county, 



indiana. — ii. 



B'S- W. S. BLATCHI.KV, INDf ANAPOLIS, IND. 



Vigo County lies on the weslcrn 

 l)order of Indiana, and almost midway 

 l)etween the nortliern and soutlieni 

 houndarics of tlie State. The topo- 

 graphy of tlie county is varied. The 

 Waliash Rixer flows througli its noith- 

 vvesteni corner and in many places its 

 bottoms, which are usually overflowed 

 each spring, are from two to four miles 

 in width. 



Bordering these lowland bottoms are 

 level river terraces or prairies varving 

 in width from three to eight miles, the 

 soils of which for a half mile or more 

 are exceedingly sandy, but lose this 

 character as one proceeds farther away 

 fi'om the lowlands. Beyoni.1 the prairies 

 are the uplands, usually more or less 

 broken or hilly, which extend to the 

 confines of the county, and are under- 

 laid with coal. I mention these facts 

 because observation hrfs led me to be- 

 lieve that the insect fauna of any region 

 is determined largely by its topography 

 and soils, as well as by its latitude, 

 temperatuie, etc. 



My collecting, especially that of 

 winter, has mostly been within a radius 

 often miles of the city of Terre Haute, 

 and largely along the hillsides where 



the bottoms and piairies, or the prairies 

 and uplands meet. 



About i6o species of Memiptera- 

 Ileteroptera have been taken in the 

 county, but I believe that this number 

 by no means exhausts the faima of this 

 suborder existing there, as such species 

 only have been taken as have come to 

 hand while searching for other forms. 

 Of these, two-fifths, or 64 species, have 

 been taken in the winter months. 



Thirty-eight of the sixty-four are 

 listed in the present paper, and lirief 

 notes as to the places which they 

 occupy in \vinter are given. The 

 remaining species, — fiom the Lygae- 

 idae onward, will be treated of in a 

 future article. 



The arrangement and nomenclature 

 is that of Uhler's " Check-List of the 

 Ilemiptera-Heteroptera of North Amer- 

 ica," to the author of which, Mr. 

 P. R. Ubler of Baltimore, Md., I am 

 imder many obligations for aid in 

 determining the species of Heteroptera 

 which inhabit the county. 



In addition to the 64 species of this 

 suborder taken by myself in winter, 

 Mr. E. P. Van Duzec, in his recent 

 " List of the Ilemiptera of Bnflalo and 



