194 SPOLIA ZEYLANICA. 
unavoidable, owing to the small amount of work that has been 
done in India on the testing of suitable insecticides and 
insecticidal methods. The main reason for this deficiency of 
knowledge is, of course, the difficulty of devising methods 
suited to the uneducated native cultivator, who cannot be 
induced to try anything in the way of a “* new departure ” in 
his cultural operations, unless its simplicity and efficiency are 
demonstrated to him in the clearest possible way. 
The book forms an excellent companion and extension of 
the Editor’s former volume, entitled ““ Some South Indian 
Insects and other Animals,” and will prove a most useful 
addition to the library of any Economic Entomologist, whether 
professional or amateur, who works in India or the countries 
adjacent to it. It gives a very complete summary of the 
known pests of practically all the crops which are grown in 
India, and this information is given in a readily accessible form. 
Finally, the price is only Rs. 3, which, as in the case of 
“ Some South Indian Insects,” is astonishingly cheap,especially 
considering the number of coloured plates. 
The Editor and his staff are greatly to be congratulated on 
the excellent work they have turned out. 
G. M. HENRY. 

Crocodiles’ nesting Habits —My personal experience of the 
nests of crocodiles is, I am sorry to say, limited to one, which 
was found near the resthouse at Horowapotana. It was 
situated on a small backwater of the tank, not far from the 
bund, in a position only slightly above the water level at the 
time, but apparently flooded at high-water level. The species 
must thus have been the Marsh Crocodile (Crocodilus palustris). 
In this case the parent certainly remained near the nest. We 
cautiously approached from behind the bund, and saw that 
the animal was actually over or very near the site of the nest. 
While we were watching another adult crocodile approached, 
for what purpose is unknown, but possibly for the purpose of 
robbing the nest. At any rate the parent at once attacked 
the intruder, and they had a tussle. As some of our party 
wanted to get a crocodile, they then fired, and both beasts 
