1052 LIST OF HOMOPTEROUS INSECTS. 



13. SCHIZONEURA? LANATA. 



Aphis lanata, Zett. Ins. Lapp. i. 2, 311, 5. 

 Lapland. 



14. SCHIZOXEURA? PyRI. 



Eriosoma Pyri, Fitch, The Senate, No. 30, QS. 

 New York. 



15. SCHIZONEURA ? TESSELLATA. 



Eriosoma tessellata. Fitch, The Senate, No. 30, 68. 

 New York. 



16. SCHIZONEURA? IMBRICATOR. 



Eriosoma imbricator, Fitch, The Senate, No. 30, 68. 

 New York. 



Genus 3. THELAXES. 



Thelaxes, fVestw. Intr. Ent. i. 118. 



Vacuna, Von Heyden, Kalt. Mon. PJlan. 177. Ratz. 



1. Thelaxes Betul^. 



Vacuna Betul^, Heyden, Kalt. Mon. PJlan. 177, 1, f. 19—21. 

 Aphis (Vacuna) Betulae, Ratz. Forst. Ins. iii. 223, 38. 

 Tremulinax, Amyot, Ann. Soc. Ent. Fr. 2me Serie, v. 483. 



Var. Green, with dark brown bands ; head black. 

 a—c. England. (In Canada Balsam). Presented by F. Walker, 



Esq. 



2. Thelaxes drvophila. 



Aphis drvophila, Schrank, Faun. Boic. ii. 1, 113. 1210. 

 Vacuna drvophila, Heyden, Kalt. Mon. Pflan. 178, 2. 

 Aphis (Vacuna) dryophila, Ratz. Forst. Ins. iii. 223. 

 Vacuda, Amyot, Ann. Soc. Ent. Fr. 2me Serie, v. 483, 534. 

 Cinaria Quercus, Sir Oswald Mosley, Gard. Chron. i. 621. 



