SIPHONOPIIORA ROS^. 
log 
kinds of wild and cultivated rose. They feed on Rosa 
canina and centifolia, forming crusts of living lice upon 
the young shoots and the stalks of the flower-buds. 
Some of our perpetual roses which partake of an ever- 
green character are free of this pest, but, on the 
other hand, the sweet-briar is very liable to its 
attacks. 
The rose Aphis varies so much in form, and occurs 
of such different colours that it might almost be 
regarded as Dimorphous. 
From the fact that individuals of both kinds freely 
mix and sometimes unite to form single companies, 
I think it safer, like other authors, to regard such as 
mere varieties. Still such variations appear to me to 
be sufficiently distinct to be described separately under 
the name of Siphonojohora rosce^ var. glauca. 
It has the following characters : 
SiPHONORHORA Ros^, var. GLAUCA, BucUon. Plate III. 
Apterous viviparous female. 
Indies. 
Size of body 0*120x0*060 
Length of antennse 0*130 
,, cornicles 0*045 
Millimetres. 
3*04X1*52. 
3*30. 
1*13. 
Body long oval ; light green or yellowish ; covered 
with a hoary or mealy coating. Antennse and legs 
slightly pubescent, shorter than in the insect last 
described. Prothorax marked with two darker green 
spots. Abdomen obscurely segmented. Stomata and 
pores marked by green dots. Tail obtuse. Cornicles 
cylindrical throughout, dark olive. 
Pupa. 
Very similar to the larva. Byes red. Wing-cases 
olive. 
Inches. Millimdres. 
0-105X0-050 2-66X1-27, 
Size 
