322 



readily distin^nisli this species from all others found on cotton. Not 

 rare. Observed feeding on the cotton aphis and the cotton Aleyrodes. 

 In Florida 1 have seen it leed upon various aphides, and scale insects 

 of the genus Lecanium. 



The two-spined green soldier-bug [IHplodus luridus Stal.) is similar 

 in its habits to those just mentioned; both the nymph and imago were 

 found on cotton. 



The social soldier-bug {Diplodus socitis Uhl.). Rare. Habits are the 

 same as allied species. 



The mosquito-shaped soldier bug {Stenopoda culieiformis Fabr.) bears 

 a superficial resemblance to some of the above species, but is very much 

 larger and differs in many respects. It does much good in destroying 

 various caterpillars, impaling them upon its short stout beak and suck- 

 ing them dry. 



The white Orraenis (Ormenis sp.) was seen upon cotton but twice, 

 and is mentioned here only as an occasional cotton insect. 



The common Lamenia {Lamenia vulgaris Fitch). Not uncommon on 

 cotton, always sucking the juices from the stem. It is a small insect 

 and the injury it does is slight and not apparent to the naked eye. 



Tiie grooved-legged Scolops [Scolops suleipes Say). Only occasion- 

 ally found on cotton, its food plant being usually coarse grasses, and 

 the injury from the punctures of its beak is but slight. 



The notch-backed tree-hopper [Entilia sinuata Fabr.). I was sur- 

 prised to find this well-known membracid, distinguished at once by the 

 deep notch or excavation on the middle of the back, occurring in numbers 

 on the terminal shoots and newly-formed leaves of cotton. It seems 

 thoroughly established on the cotton, and I observed it puncturing and 

 feeding on the sap. The form was slightly smaller and darker colored 

 than that found near Washington, but otherwise appeared identical. 

 While I did not succeed in finding the eggs, I have no doubt that they 

 are deposited under the epidermis of the young shoots and the whole 

 transformation from egg to imago takes place on the plant. No appre- 

 ciable injury from their attacks was observed, as they occurred only 

 on plants of vigorous growth. 



The white-margined sharpshooter {Oncometopia costalis Fabr.), an 

 elongate black and white tree-hopper, was not uncommon on the stalk, 

 puncturing and sucking its juices. 



The wave-mark sharjishooter {Oncometopia undaia Fabr.) is much 

 more frequently met with than 0. costalis. 



The glassy-winged sharpshooter {Homalodisca coagulata Say) can 

 always be found in plenty feeding on the stalk or a branch of the cot- 

 ton. It invariably clings to the stalk with the head pointed downward 

 and when disturbed flies off with a whirring noise. An account of its 

 life history by Riley and Howard is given in Insect Life (vol. v, p. 150). 



The yellow-headed tree-hopper {Diedrocephala Jiaviceps Riley) is 

 better known as a wheat insect. I took several specimens feeding on 

 cotton. 



