112 HEMIPTERA. 



few, and has contented himself with mentioning 

 the plants on which they are to be found." 



To this account we shall only add, that ac- 

 cording to Reaumur each Aphis may produce 

 about ninety young ; and that, consequently, in 

 five generations, the descendants from a single 

 insect would amount to five thousand nine hun- 

 dred and four million, nine hundred thousand. 



SPECIFICATION. 



Aphis Rosx. A. Rosae. Linn. Syst. Nat. l.p.734. 

 Gmel. 1. p. 2204. Fabr. Syst. Ent. p. 737. Spec. 

 Ins. 2. p. 387. 

 Degeer, Ins. 3. p. 65. t. 3./. 10. 

 Reaumur, Ins. 3. t. 21./. 1 — 4. 

 Inhabits the stems of the rose. 

 PI. 39. a. Natural size. b. The same magnified, 

 c. Aphides on the rose. 



