268 Memoirs of the Indian Museum. [Vor. VI, 
possess similar habits of grouping themselves into patches, and sticking out their 
long hind legs into the air at the same time and in the same direction. 
HOST-INDEX OF THE APHIDIDAE (PLANT-LICE) OF LAHORE. 
In the following pages is given a host-index for the Aphids collected by me in 
the neighbourhood of Lahore ; the names of the plants, in alphabetical order, are 
placed on the left side of the page and against them are noted those Aphids known to 
infest them. The time of the year when they were observed has also been indicated 
in most cases. 
This index from its very nature must be incomplete and only provisional. It 
covers a very limited area and there is no reference in it to the numerous hill species, 
as yet entirely unworked. Therefore, the only justification for preparing itis the 
entire absence of any other, and yet to a certain extent it forms a fair representative 
for the plains in other parts of India as well. I hope it will be of some use to those 
who take up the study here or elsewhere in this country, and with that view the com- 
mon vernacular names of plants, and in some cases their English equivalents, have 
also been included in the index. 
PLANTS. 
Abutilon indicum 
- Abutilon sp. 
A geratum conyzoides 
Ak (see Calotroprs). 
Althea vasea (khatmi) 
Alhagi manrorum 
Alucha (see Prunus armenica). 
Antirhinum sp. 
Apple (see Prunus malus). 
Aru (see Prunus persicae). 
Arundo donax 
Avena sativa 
Asgand (see Withania). 
Bakla (see Vicia faba). 
Bathu (see Chenopodium alba). 
Beta bengalensts 
Bhakhra (see Tribulus sp.) 
Bhang (see Cannabis sativa). 
Bongainvillia sp. 
APHIDS. 
Aphis malvae (Koch) 
(i) A. gossypii (Glover) 
(11) Aphis malvoides, n. sp. 
(i) Brachycaudus prum (Koch) 
(ii) Myzus persicae (Sulz.) 
A. malvae (Koch) 
A. gossypu (Glover) 
(i) M acros. pisi (Kalt.) 
(ii) A. medicaginis, Koch 
Myzus persicae (Sulz.) 
Hyalopterus prum (Fabr.) 
(i) A. maidis (Fitch) 
(ii) Stphocoryne avenae (Fabr.) 
(iii) Macrosiphum granarium (Kir- 
by) 
(iv) Toxoptera graminum (Rond.) 
Myzus persicae (Sulz.) 
A. medicaginis, Koch 
A. malvoides, n. sp. 
DATE. 
Novr. and Feb. 
March to August. 
May. 
Feb.-April. 
March. 
Mare. 
March. 
Feb., March-May, Sept. 
Novr. 
Oct.-March. 
Novr.-March. 
Novr.-March. 
Feb.-March. 
Feb. 
Novr.-Decr. 
Novr. (very occasional) 
