486 Report of the Entomologists of the 



come quite numerous on the currant bushes in the Station gar- 

 den. The galls had just begun to form and some of them were 

 tinged with red. Each of the galls was occupied usually by but 

 one female with three or four young. The lice were multiplying 

 very rapidly at this time and toward the latter x»art of May had 

 become sufficiently abundant tO' do serious injury. 



The apterous and winged viviparous females have been de- 

 scribed by Bucton* as follows: 



Apterous viviparous female. — Size of body 2.14 mm. by 1.01 mm.; length 

 of antenna? 2.27 mm.; length of cornicles 0.37 mm. Long oval, shining 

 green, with darker green mottlings. Front flat, garnished with short 

 bristles, as also are the sides. AntenniC long and very fine. Cornicles 

 cylindrical and pale green. Eyes bright red. Cauda obtuse. Legs yel- 

 low or greenish. Bristles capitate. 



Winged vivijMrous female. — Expanse of wings 7.62 mim.; size of body 2.54 

 mm. by 1.13 mm.; length of antennne 2.27 mm.; length of cornicles 0.50 

 mm. Bright greenish yellow. Head pale olive. Eyes red. Three ocelli 

 obvious. Antennae fixed on small tubercules. Frothorax with an in- 

 dented olive band. Thoracic lobes brown. A stellate spot is seen on the 

 post thorax, succeeded by six or seven irregular transverse bands on the 

 abdomen of varying thickness; four or five spots on each lateral edge. 

 Cornicles green or olive, cylindrical, or at least very slightly lavate. Legs 

 green, with olive femoral points and tarsi. Wings broad with yellow 

 insertions, greenish cubitus and veins. 



During the latter part of July nearly all the lice disappeared 

 from the currants and gooseberries. There still reanained, how- 

 ever, an oecasioual apterous female on the old leaves. 



These females coiuld be occasionally found as long as the leaves 

 remiained on the bushes and were always accompanied by from 

 two to four or five larvtp. They were very light green in color 

 and about two-thirds as large as the apterous viviparous females 

 found earlier in the season. (Plate XXYIII, fig. 3.) 



The male lice were first observed toward the latter part of Oc- 

 tober (Oct. 21). 



The male. — Size of body 1.15 mm. by 0.45 mm.; expanse 5.95 mm. Yel- 

 lowish green. Head dark or olive green. Meso-thorax mottled with 

 jrregular dark green spots, and the abdomen with from three to six dark 

 spots along the lateral dorsal margins, and a broad, broken transverse 

 dorsal band of the same color on the posterior half. 



•Monograph of British Aphides, Vol. I, pp. 180, 181. 



