INSECTS. HEMIPTERA. 67. Aphis. 703 



The minute animals which compofe this lingular genus, infefl 

 various plants, generally in large focieties, hindering their 

 growth and confuming their juries : they are fometimes win- 

 ged and fometimes apterous, without any diftinclion of fex .• 

 in the fpring they are viviparous, producing the young alive ; 

 in the autumn they are oviparous ; and by a furprifing aber- 

 ration from the common laws of nature, it appears that one 

 impregnation of the female is fufficient for many fucceffive 

 generations, without the farther affiftance of the male. 



.ongirojns Oj nereous . f nou t thrice as long as the body. 



Inhabits Drefden under the bark of trees, and preys an the larva 

 of ants : middle-fized. 



<Lychnidis. Qn the ftaIks of the Lkhnis dioeca# 



Body black : margin of the abdomen plaited : legs paler : joints 

 black. 



Xaprez. On the Salix caprea. 



Small ; green, paler at the fides : eyes, antenna and tips of the 

 legs black .• abdomen pointed. 



*Sambuct. On the branches of the Sambucus niger. 



Large, black, the margin each fide with 3 white ftreaks : bafe of 

 the abdomen with a fmall dot each fide and a fingle one near 

 the tail. 



Solidaglnis, On the ftalks of the Solidago virga-aurea. 



Body brown : front emarginate : horns fetaceous twice as long 

 as the ftyle : legs pale, the joints black : the young are tefiace- 

 ous. 



^Cera/t, On t ^ e leaves of the Prunus cerafus. 



Gloffy -black : middle of the antenna and fianh pale. 



Ribis On the diflorted leaves of the Ribes ruber. 



Reaum. Inf. $.tab. 22. fg. 7. 10. Frifh. 11. tab. 14. 

 Body glabrous green : eyes black : antenna as long as the body 

 and legs brown : tail obtufe. 



irundinis. On the leaves of the Arundo epigejos. 



Body green : head and thorax brown covered with white down ; 

 antenna and legs piceous : abdomen unarmed. 



Burft 



ana. 



