12 



CIRCULAR FOURTEEN 



some eases the family and genus, to which they bt^ong. The iden- 

 tification of vegetable matter, as a rule, is not so difficult. Just 

 after corn-planting time, stomachs should have been examined ; 

 for at this season of the year the greater damage is done. At this 

 time, however, other field work claimed our attention. The evi- 

 dence is so conclusive as to their injury to the corn that there 

 can be no question as to their destructiveness at that time. 



stomach No. 1. — Adult female; trapped July 7, 1912, at Fort 

 Collins, along railroad embankment: stomach full of remains of 

 grasshoppers. 



Stomach \o. .2. — Adult male; trapped July 7, 1912, at Fort 

 Collins, along railroad embankment : stomach nearly full of grass- 

 hoppers and caterpillars. 



l^tomacli Xo. S. — Male, about two-thirds grown; trajtped July 

 7, 1912, at Fort Collins, along railroad embankment: stomach full 

 of grasshoppers. 



Stoniach No. If. — Female, about two-thirds grown; trapped 

 July 10, 1912, at Fort Collins, along railroad embankment : stom- 

 ach full of grasshoppers and a small amount of corn. . 



Stomach Xo. 5. — -Female, about two-thirds grown ; trapped 

 July 10, 1912, along railroad embankment: stomach about half 

 full of grasshoppers. 



Stomacli Xo. 6. — Female, about two-thirds grown; tra]ii:ed 

 July 10, 1912, at Fort Collins, along railroad embankment : stom- 

 ach full of grasshoppers. 



StoinacJi Xo. 7.— Female, about two-thirds grown; trapped 

 July 10, 1912, at Fort Collins, along railroad embankment: stom- 

 ach, nearly empty, contained a small amount of corn. 



Stomach Xo. (S\— Female, about two-thirds grown ; trapped 

 July 11, 1912, at Fort Collins, along railroad embankment : stom- 

 ach full of grasshoppers and one caterpillar. 



StoutacJi Xo. 9. — Nursing fenmle; trapped July 12, 1912, at 

 Fort Collins, along railroad embankment: stomach, nearly empty, 

 contained grasshoppers and one small larva. 



Stomach Xo. 10. — Adult female; trapped August 10. 1912, 

 along railroad embankment: stomach full of grasshoppers and 

 three small larvae. 



Stomach Xo. 11. — Adult female; trapped Ai)ril 15, 19i:{. at 

 Fort Collins, in alfalfa field: stomach full of alfalfa. 



Stomach Xo. 12. — Adult male; trai)ped April 15, 19i:j, at 

 Fort Collins, in alfalfa field: stomach about half full of alfalfa 

 and one cricket. 



Stomach Xo. 13. — Adult umle ; trapped April 15, 191. i. at 

 Fort Collins, in alfalfa field: stomach full of alfalfa and bet ties 

 (carabidac). 



Stomacli Xo. ///.—Adult female; trapped April 15. 1913, at 

 Fort Collins, in alfalfa field: stomach, nearly empty, contained 

 some alfalfa. 



