34 
divisions. As I have been unable to procure a copy of this author’s 
valuable work, I am indebted to Mr. Buckton for the above notice. 
Westwood, in the “Generic Synopsis” at the end of his “Modern 
Classification of Insects,” arranges the genera of Aphidae as follows . 
Aphis. Linn, type— A. rosae Linn. Abdomen bicornieulate; antennae 
long, setaceous ; fore wings with three oblique discoidai nerves, 
the first trifid ; proboscis short; collar long. 
La ciivus. Illig. C inara Curt, type— A. roboris. Linn. Abdomen bitu¬ 
be rcled ; antennae moderate, often filiform; collar shoit, pio- 
boscis long. 
Atheroides. Hal. type— A. serrvlatus. Apterous, linear, flattened; 
spiracles of penultimate joint simple; antennae not longer 
than half the body; proboscis shorter than the body. 
Kriosoma. Leach. Myzoxyle. Blot, type— L. lanigera III Abdomen 
without tubercles or horns; antennae short, fihfoim, body 
wooly ; fore wings with simple oblique discoidai nerves. 
Adelges. Vallot. type-M. laricis. Vail. Legs and antennae very 
short, female very much swollen ; legs and antennae scaicely j 
visible; setae of the mouth very long. 
Brysockypta. Hal. type— Aph. bursaria. Linn. Composed for the 
reception of those species of Eriosoma which inhamt closed 
follicles on the leaves and shoots of plants. 
Phylloxera. Fonscol. doubtingly introduced by Chirtis into his Guide; . 
type_ P. roboris. Fore wings carried fiat on the back, vita 
one simple stigmal and two simple oblique discoidai nerves. 
TmrT ivrs Westw. type— T. auerdcola Westw. Mings carried 
fiat on the back at rest, anterior with three oblique discoidai 
nerves, the anterior bifid; antennae shoit 
Koch in his excellent work on the Aphides (Die Pflanzenlau.se 18a ) 
indicates his classification by a tabular statement or list of the various 
divisions and genera, but without characters. I herewith present this 
arrangement adding, where I can, very brief notices of the characters 
‘as he"'has Mven them elsewhere in his work, and giving equivalents 
for his names of the primary divisions he adopts. 
A Zweigabler (Dikyplionen.) (third branch vein twice forked.) 
Aphiden. (No characters given.) 
Chaitophorus. Koch. 
Ilya! opterus. Koch. 
, Rhopalosiphum. Koch. 
a. 
1 
2 
3 
4 
Aphis. Linn, 
a. “Conophoren.” 
“Anuren.” 
“Hrachynren.” 
“Prokispilen.” 
“Katoptronen.” 
“Pleurodonten.” 
“Orthuren.” 
. Siphonophora. 
b. Drepanosiphiden. 
6. Drepanosiphum. Koch. 
b. 
c. 
cl. 
e. 
/• 
9- 
Koch. 
