168 
SPOLIA ZEYLANICA* 
protective. The larvae are omnivorous and cannibalistic. They 
are often the subjects of parasitism of such animals as vorticella, &c. 
I have not observed any particular features about the pupae. 
(2) Myzomyia culicifacies (Fig. 3). 
The adult is difficult to be found in the end of the dry season, 
but the larvae are abundant. They are to be found in clear run¬ 
ning water, and the best place to look for them is in the rivers, 
where they can be found in the back eddies by the bank, near or 
associated with weeds. I have found them at places scattered 
along the same river for about fifty miles. 
They seem particularly abundant in the rivers of lower Uva. 
I have also found them in the edges of quickly running little 
streams if there are weeds. I have never found them in dirty or 
stagnant water. I have found the larvae in wells in which the 
water was near the surface, and into which light penetrated 
easily. 
(3) Myzomyia Listoni (Fig. 4). 
I have only found the larvae of this species at Batticaloa in the 
pools of what was originally a running stream, and at Tangalla. 
(4) Myzorhynchus barbirostris (Fig. 5). 
The adults of this species have been easily found in nearly all 
the places in which they are marked. They appear to be present 
at all times of the year, but their known distribution in Ceylon 
is peculiar, being only in south and west. However, future 
investigations may show them to be present in the other regions. 
The larvae are easily found, and are rather easily known, owing 
to the third abdominal segment being light in colour, whereas in 
general appearance they are black and large. 
The larvae were only found by me in clean water. I have not 
noticed them in running water, only in clear pools. There seems 
to be some slight variation in the palmate hairs, viz., the second 
segment hair may be poorly developed, and there may be at times 
a badly developed hair on the first abdominal segment with well- 
developed ones from the second to the seventh. I have found it 
quite green ; probably this was protective. 
(5) Nyssorhynchus maculipalpis (Fig. 6). 
The adults have been found by me in Colombo and sent to me 
by the Medical Officer of the jail at Mahara. They are difficult 
to find and recognize. The larvae were found in a little trickling 
stream running from a spring to a well at Mahara and in the pools 
along this stream, and in similar little streams and pools in other 
places. 
