PROCEEDINGS OF THE SECOND ENTOMOLOGICAL MEETING 177 
death of the bugs, a series of experiments was carried out in the Labora- 
tory. First one part of kerosine was taken to one part of water and this 
was gradually diluted until there was one part of kerosine present in 
108 parts of water. It was found that a proportion of one part of kero- 
sine in eighty parts of water was effective, but that mixtures of higher 
dilution were ineffective. 
Last year (1916), m July only one field was very badly affected. 
The surrounding fields, although having the same variety of rice, were 
practically immune. 
This insect seems to have appeared as a pest in the Central Provinces Mr. Fletcher. 
quite sporadically. It was very bad in 1914 and 1915 but scarcely ap- 
peared in 1916 and it is probable that we shall not hear much of it again 
for some years there. But it is evidently hable to appear as a pest in 
other rice-areas. 
Nephotettiz, apicalis usually occurs with N. bipunctatus, although 
usually in less numbers, and may also be a pest, but we have no record of 
it as dog damage by itself. Both these two species form a large pro- 
portion of the “ Green-fly nuisance ” that one hears so much about in 
Calcutta at the end of the rainy season. : 
Tettigoniella spectra |“ South Indian Insects,” pp. 496-497, fig. 
385] is also common in paddy areas and is probably a minor pest of 
paddy. It has been reared at Pusa on sugarcane and on a wild grass. 
Kolla mimaca is another small bug, very like Tettigoniella spectra, 
which was reared on paddy at Pusa when attempts were being made in 
1915 to breed out Nephotettiz. A coloured plate showing the life-history 
was done [exhibited]; as a matter of fact, it was started with the idea 
that we were dealing with Nephotettix when the rearing was commenced 
from bundles of eggs found thrust into the leaf-tissue. It is not a regular 
vest of paddy, so far as we know. i 
Sogata pusana, S. pallescens and S. distincta are also small bugs found 
in some numbers on paddy when Nephotettix was being investigated. 
A species of Liburnia is said to occur on paddy and to have done 
serious damage in Bengal about nine years ago, but exactly what it is 
and whether it is a Liburnia seem doubtful. 
Ripersia sacchari oryz@ is referred to under the name R. sacchari in 
Entomological Memoirs, Vol. II, pp. 128-129, tab. 12, figs. 10-13. On 
that- occasion this insect occurred in 1907 widely on rice throughout 
Tirhut and Bihar. The insect has since been named by Mr. E. Ernest 
Green as Ripersia sacchari var. oryzew. Whether it is truly distinct 
from the form on cane, we do not know, but the rice form seems to be 
widely distributed in India. 
