EEPOET OF THE ENTOMOLOGIST. 33 



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When fully grown, the larvse acquire perfect wings, and are able to fly 

 from vine to vine, where they lay fresh eggs for future generations. 

 The real Erytlironexira vitis, or grape-leaf hopper, is described as of a 

 pale yellow color, with two blood-red bands and a third dusky band at 

 the apex. The anterior band occupies the base of the thorax, wing- 

 covers, and scutel ; the middle band ends in a much narrower, nearly 

 square, spot on the middle of the outer side of the wing-covers ; it is 0.13 in 

 length. For the destruction of this insect syringing with strong tobacco- 

 water has been recommended, also dusting with lime, sulphur, helle- 

 bore and red pepper, and fumigation with tobacco. Syringing with very 

 dilute carbolic acid and water have also been recommended, but are said 

 not to be of much utility unless applied almost every day. Carrying a 

 lighted torch through the vineyard at night is said to destroy multi- 

 tudes, as, attracted by the fire, they fly into the flame and are burnt. 

 This should be repeated at short intervals, Spading up the ground 

 in the immediate vicinity of the vines late in the autumn and early 

 in the spring would probably expose the perfect insects to the frost 

 and cold, if it hibernates as before stated. In a green-house or grapery, 

 a large, somewhat shallow vessel, similar to a washing-tub, partially 

 filled with water, might be placed, and a small quantity of oil poured 

 over it so as to form a slight film upon the surface, and a brick placed 

 in the middle of the tub with one end above the level of the water and 

 oil, on which to place a candlestick or lantern, so that at night the 

 candle or lantern might be lighted, and the vines disturbed, when many 

 of the insects, naturally flying around the light, would fall into the tub, 

 and the oil clogging their wings, they could not escape. 



Erythroneura (Tettigonia) basalis is the most numerous species in this 

 vicinity, and differs very much in ornamentation, some of j^^ 33 

 them being very much spotted with red, while others have 

 almost spotless wings and a mere reddish tinge here and 

 there. It is very small, and about 0.05 in length. 



Diedrocephala (Tettigonia) quadrivittata is a very pretty in- 

 j^tq 3^ sect, 0.35 in length, and is of a light-green color, with 

 four distinct longitudinal stripes, meeting on apex or 

 edge of the wings. We have taken these insects near 

 grape-vines, but they appear to be more numerous in 

 meadows and amid rank herbage and blackberry- 

 bushes. These figures are magnified. 

 The Fsyllidcc are small insects, very much like the Cicada, or harvest-fly 

 in miniature, having the wings of both sexes deflexed at.the sides jr 3^ 

 of the body. As larvae, pupse, and perfect insects, they subsist on ^" 

 the juices of plants; the larvae are flat. A very pretty species, ^ 

 Fsylla rhois, having deflexed black wings and an orange-yellow 

 thorax, is very common near the Maryland Agricultural College 

 in July and August on the common sumach ; it is very small, 

 being only about 0.10 in length. The figure is magnified. 



Fsylla 2Wh ^^ the pear-tree flea-louse, is very injurious to the pear- 

 trees. It is also found on apple-trees, and wo have taken them in New 

 York as late as the middle of December sucking out the sap. The pupae 

 of Fsylla pyri are very small, of a flat form ; the wing-cases are black; the 

 abdomen and body are yellow, barred with black, and the thorax is also 

 yellow, or brownish, spotted or ornamented with black. The perfect 

 insect is about 0.20 to 0.25 in length, and has four transparent wings, 

 which, when the insect is at rest, form an angle over the body like the 

 roof of a house. These wings are hyaline, veined with black veins, and 

 3a 



