252 Insect Pests. 



from 1 to 2^ mm. No distinct prominence on the first autennal 

 joint. 



(2) Winged Viviparous or First Migrant Female. On hops, 

 coming from prunes. Apple-green, with dark blackish-brown 

 head, thoracic lobes and spots under the wings. Abdomen also 

 with dark brown transverse bands, and three or four blackish 

 spots on each side. Legs, green and black. Eyes, reddish-brown. 

 In this female the first autennal joint has a small projection. 



(3) Apterous Viviparous Female. On hops. Elongate oval, pale 

 green, smaller than wingless female on prune. Body semi-transparent 

 and shiny. From one to three dark green lines down the back, the 

 lateral ones broken. Eyes, red. Frontal tubercles distinct, first 

 antennal segments with large process. Length from H mm. 



(4) Second Winged Viviparous Female. This winged female that 

 flies back to the prune is larger than the one that left, the wing 

 expanse being between 6 and 7 mm., and the body length 

 from lij to '2 mm. Colour, pale green. Head and prothorax, dark 

 brown. Thoracic lobes, brown, and one or two brown transverse 

 bars on the abdomen ; four blackish spots on each side ; anal plate 

 also dark brown. Eyes, red. Antennae, green at base, brown at tips. 

 Stigma of wing, green ; base of wing, yellowish. Frontal tubercles 

 not well developed. 



(5) Ovigerou* W ingle** Female. On prunes. At first almost 

 white, but becoming olive, slightly mottled before egg-laying. Small 

 and somewhat flattened. Frontal tubercles well developed, and also 

 antennal processes. 



(6) Winged Male. Pale green ; thoracic lobes and scutellum, 

 deep olive-brown. Eyes, red. Wings similar to female. Antemue 

 much longer than body. Frontal tubercles small; anteunal processes 

 moderate. 



The pupm are greenish-yellow and pilose. Eyes as usual, red. 

 Wing buds tipped with pale brown. Tubercles developed. 



PREVENTION AND TREATMENT. 



The cultivation of hops in the neighbourhood of damsons is 

 decidedly giving this destructive insect undue advantages of in- 

 creasing. But that practice may be made to work in an advan- 

 tageous way, if growers wash their damsons early, when lice are 

 seen upon them, and so kill the insect before its advent on the 

 hops. Considerable harm is done to the prunes by these lice, and 

 thus washing is doubly beneficial. The majority of eggs hatch out by 



