INVESTIGATIONS IN INDIA. 17 
on this island, and the fruit produced is inferior in size and quality. 
When picked, the rind is perfectly green, although the flesh may be 
fully matured. This failure of the fruit to color — a condition noticed 
in other countries lying near the equator — is doubtless attributable 
to the excessive dampness of a tropical climate. 
The orange trees examined on this island were found entirely free 
of the citrus white fly. Through the kindness of Dr. E. E. Green, 
Government Entomologist, his extensive collection of Aleyrodidae 
from all parts of Ceylon was examined, but without evidence of 
the citrus white fly. When we consider the above data it does not 
seem at all likely that the citrus white fly occurs in Ceylon. 
INVESTIGATIONS IN INDIA. 
General. 
The journey was continued from Ceylon to India, which was 
entered at Tutucorin, the southernmost seaport of importance. 
Thence the writer proceeded by rail to Calcutta, his object in visiting 
this city being to obtain all possible information as to the distribu- 
tion of citrus trees throughout the Indian Empire. Calcutta is the 
one city which the naturalist seeking information about this country 
will first desire to reach. In addition to the natural advantages 
resulting from the fact that it has been the headquarters of the Gov- 
ernment and that it is the largest city with very much the largest 
white population of any Indian city, it contains the Indian Museum, 
the largest if not the oldest institution of its kind in the Orient. 
This building is especially rich in natural history material. Many 
investigators are employed at this Government institution for research 
work and to classify and bring to the notice of the public information 
on the natural history and resources of this great yet little known 
country. 
Through the kindness of Dr. F. Anondale, Director of the Indian 
Museum, access was had to the entomological collections contained 
therein. An examination of material of the family A^rodida) 
brought to light some severely infested orange leaves which were 
labeled as collected in the northwestern Himalayas about 1893, it 
being stated on the label that duplicate material had been sent to 
William Maskell, the late eminent entomologist of the New Zealand 
Institute. It happened that about 1394-95 Maskell described anew 
species of Aleyrodes as occurring on orange in the northwestern 
Himalayas, calling it Aleyrodes aurantii. Hence it was at once evi- 
dent that the material found in the Indian Museum was identical 
with the Aleyrodes aurantii of Maskell. Prof. Quaintance, of the 
Bureau of Entomology, in examining the Maskell collection, came to the 
conclusion that the Aleyrodes aurantii of Maskell was the same species 
as Aleyrodes citri R. & H., the citrus white fly of Florida. The writer's 
