516 Records of the Indian Museum. [VoL. XT, 
The tubes of the Hindoloides indicans (pl. xxiii, fig. 14) 
are easy to distinguish from those of Machaerota planitiae by 
their more wrinkled appearance, and by their form, the free 
portion being shorter and less straight. This may perhaps ac- 
count for the curious fact that although adult of Machaerota 
are often much more abundant than those of Hindoloides, the 
reverse is the case with their tubes; for most of these tubes are 
always found to be old and empty, and presumably the long 
straight distal portion of the tube of Machaerota soon gets broken 
off. 
The larvae of the two genera are much alike; in their later 
stages they can, however, be distinguished by the size of the 
developing process of the scutellum (compare figs. 12 and 15, 
pl. xxiii). 
Machaerota planitiae is recorded in ‘‘ Indian Insect Life’’ 
(p. 733) from Zizyphus jujuba (ber), from Aegle marmelos (bael) 
and from cotton, as well as from ‘‘ other plants in India.’’ Early in 
February of this year I found its tubes common at Pusa on ber 
and on cotton. On the former it was accompanied by tubes of 
some species of another genus of which I failed to obtain 
adults. Only Machaerota appeared to occur on cotton. I doubt 
whether any of the tubes found on bael belonged to this genus. 
As the mixture of genera on Zizyphus has been so long un- 
noticed, it is not unlikely that the genera and species to be found 
on different plants will prove to be greater than has hitherto been 
supposed. 
Jassidae. 
Annandale notes that the phenomenon of ‘‘ weeping trees”’ is 
sometimes due not to Cercopidae, but to Jassidae (Rec. Ind. Mus., 
III, pp. 293-4). Other families of Homoptera appear also to take 
part in its production. 
Lefroy (J.B.N.H.S., XX, pp. 235-6) notes that the Mango 
Jassid Idiocerus appears only to breed when mango trees shoot 
freely. In the district where his observations were made this 
occurred in March only for five years in succession. During the 
sixth year, however, an exceptionally wet season caused the trees 
to shoot again in September. ‘‘ Whether from this reason or not, 
the [diocerus also bred and one distinct brood was produced at a 
season when we have never before observed it breed at all.’’ A 
similar restriction of the breeding season may perhaps account for 
the freedom of Calcutta during the greater part of the year from 
the notorious ‘‘green-fly’’ (Nephotettix bipunctatus and apicalis) 
which appears every year towards the end of the rains in such 
myriads that it is often almost impossible to approach a glowing 
arc-lamp near the open maidan. 
Concerning the eggs of Tettigoniella spectra see Lefroy, 
jJ B.NES Sake o3e: 
