1052 LIST OF HOMOPTEROUS INSECTS. 



13. SCHIZONEURA? LANATA. 



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

 Lapland. 



14. SCHIZONEURA? PyBI. 



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

 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, Westw. Intr. Ent. i. 118. 



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



1. Thelaxes Betul^e. 



Vacuna Betulae, Heyden, Kalt. Mon. Pflan. 177, 1, f. 19—21. 

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

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



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



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

 Esq. 



2. Thelaxes dryophila. 



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

 Vacuna dryophila, 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. 



