213 



pounced upon it instantly, securing it by means of the mandibles, 

 and it was soon eaten. They have the habit of lurking about the 

 axils of the upper leaves, or the crown of the cane stalk just 

 where the leaf-hoppers congregate in large numbers in young 

 cane, and it is easy for the grasshoppers to capture an abund- 

 ance of their prey, especially the young leaf-hoppers. When 

 confined in a breeding cage with growing cane for several days, 

 very little eating of the cane was done; but when leaf-hoppers 

 were introduced they were at once devoured. 



Young grasshoppers were bred from the egg to maturity, be- 

 mg fed entirely upon leaf-hoppers and aphis. Very young grass- 

 hoppers were seen to capture and eat nymphs of leaf-hoppers of 

 nearly their own size. 



Freshly hatched grasshoppers, fed with tender numiciiic 

 grass, died after 5 days, without having eaten a particle. 

 Other freshly hatched grasshoppers were tried upon tender cane 

 leaves. They died after 6 days without 'having eaten any- 

 thing. Young grasshoppers have been seen eating the blos- 

 soms of Canna, Lantana, and other plants, so that they are not 

 entirely insectivorous. 'In eating Lantana blossoms they ate 

 through the tube of the corolla at the place where the stamens 

 are located inside, apparently to obtain the pollen. 



The eating of cane done by this insect is of no consequence. 

 It occasionally does some ragged eating of the younger leaves 

 near the tip. In cane-fields, I have observed t'hem feeding to a 

 large extent upon the leaves of Honohoiio, and the flowers of 

 various kinds of weeds; and I have also seen them eating the 

 seed capsules and young seeds of Canna indica to a considerable 

 extent. They were very numerous in a patch of this plant grow- 

 ing in Makiici Valley, above the H. S. P. A. Experiment Sta- 

 tion grounds. Examination of crops of adults and nearly full- 

 grown nymphs collected in this patch and vicinity showed that 

 8.82% contained insect remains, and 91.18% contained vege- 

 tation. 



Examination of the crops of a large number of grasshoppers 

 collected on Mt. Tantalus, by Mr. W. M. GifiPard, Nov. 6. 1904, 

 gave the following results : 



21.2% contained insect remains, of whic'h 6.6% contained 

 only insects, 14.6% contained both insects and vegetation, 

 78.6% contained vegetation only. 



A number of grasshoppers caught in a cane-field where there 

 were plenty of leaf-hoppers, were examined, and the crops of 

 30% of them contained fragments of leaf-hopper. On examin- 

 ation of crops of grasshoppers gathered in cane at H. S. P. A. 



