INDIAN APHIDES. 181 



insects, which were individuals out of companies of 

 many hundreds, under the microscope showed all the 

 characteristics of Siphonophora rosce, and, indeed, they 

 were identical with our English rose Aphis. They 

 were pretty constantly attended by ants, which coursed 

 up and down the trees for the honeydew. 



The same gentleman also procured for me, in the 

 following June, an Aphis which clustered on blades of 

 grass growing on a wild flat in the neighbourhood of 

 Bogsar in the same district. They belonged to the 

 genus Aphis, and were exceedingly like the British 

 Aphis jacobcecu. Ants also affected their company, 

 specimens of which last insect he mounted for me in 

 resin. 



Two or three winged forms were secured ; but, as 

 they were unfortunately lost during their transit to 

 England, I cannot give their diagnosis, though I 

 possess the apterous females in resin. 



From Bogsar also I obtained specimens of a root- 

 feeding Aphis possessing tarsi with a single claw and 

 5-jointed antenna?. They were infesting the roots of 

 Zizyphus jujuba. No winged insects could be obtained 

 though a search for them was made several times. 



I give the following description of this Indian 

 Aphis : 



RHIZOBIUS .TUJUB2B, Bucktoil. 



Apterous viviparous female. 



Inch. Millimetres. 



Size of body 0'060 X 0-035 1-52 X 0*88. 



Length of antenna? 0'020 0*50. 



Cornicles wanting. 



Body oval, yellow, furnished with numerous stout 

 bristles. Eyes very small; composed of a single 

 lens, mounted on a conical process, which rises 

 near the base of the antenna?. Antenna? short and 

 5-jointed, the apical joint being somewhat clavate. 



