35 
6. Lacliniden. 
7. Lachnus. III. 
8. Dryobius. Koch. 
d. Callipteriden. 
9. Callipterus. Koch. 
e. Phyllaphiden. 
10. Cladobius. Koch. 
1J. Phyllaphis. Koch. 
12. Asiphum. Koch. 
B. Eingabler.' (Monokypkonen.) (Third branch vein with one fork.) 
a. Toxopteriden. 
13. Toxptera. Koch, 
h. Vacuniden. 
14. Glyphina. Koch. 
15. Vacuna. Heyd. 
c. Schizoneuriden. . 
10. Mindarus. Koch. 
17. An oecia. Koch. 
18. Pachypappa. Koch. 
19. Schizoneura. Hart. 
G. Dreiast-ler. (Trichotomen). (Three branch veins, all simple.) 
a. Prociphiliden. 
20. Stagona. Koch. 
21. Prociphilus. Koch, 
h. Pemphigiden. 
22. Tkecabius. Koch. 
23. Pemphigus, llart. 
c. Tetraneuriden. 
24. Tetraneura. llart. 
d. Tram i den. 
25. Rhizobitis. Harm. 
26. Endeis. Heyd. 
27. Ford a. Heyd. 
28. Trama. Heyd. 
29. Amycla. Koch. 
30. Tvcliea. Koch. 
%! 
]J. Zweiastler (Dichotomen). But two branch veins, the third wanting 
a. Chermiden. 
31. Anisophleba. Koch. 
32. Chermes. Linn. 
b. Phylloxeriden. 
33. Phylloxera. Fonsc. 
u .^1 
a** 
The following synopsis of the sub-families and genera, by Pr. Giov¬ 
anni Passerini, is perhaps the best that has so far been given to the 
public. It is translated chieiiv from “Prospetto del Genera ,” in his 
“GH Afidil 
Aphididje. Passerini—(Sub-families). 
A. Antenna* seven-jointed.—(l) Aphidimve. 
AA. Antenna? six-jointed, at least in the winged form. 
a. Winged form obvious, or at least known. 
b. Cubital vein once forked or simple.—(3) PemphiginjE. 
