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SPOLIA ZEYLANICA. 
Myzomyia Listoni is known to carry the germ in India. Nys- 
sorhynchus maculipalpis is doubtful,and Pyretophorus jeyporensis 
is suspected, but neither these nor any of the others have been 
proved as yet without doubt to be spreaders of malaria. 
I suspected Nyssorhynchus maculipalpis as the cause of the 
spread- of fever at Mahara jail, but did not get sufficient for 
dissection purposes, and therefore cannot say definitely. 
There is a great difference between West Africa and Ceylon. 
In West Africa about 50 per cent, of the Anopheles I dissected, 
which were Anopheles costalis , now called Pyretophorus costalis , 
and the little mosquito which I called Anopheles Kumassi (7), 
contained the germ. 
5.—Future Investigations. 
The knowledge of the Anophelinse in Ceylon is very imperfect. 
They have never been studied in the wet season. Nothing is 
known about their distribution in the months of December and 
January. Only Rossii and barbirostris have been dissected in any 
number, consequently the relationship of the species of Anopheles 
to malaria in Ceylon has yet to be clearly made out. 
