70 SPOLIA ZEYLANIGCA, 
Filarie were found in the blood of several Calotes versicolor. 
These have already been described by Castellani and Willey. I found 
a similar Filaria in the blood of the Varanus from Trincomalee. 
Miss Robertson (1908) apparently also found no Protozoa in the 
blood of most Ceylon lizards, for she says: “The common Calotes 
and the beautiful Brahminy lizard ...... and the skink and the 
horned up-country lizard were all negative, so also the common 
little house gecko who lives on the wall and eats flies.” 
SNAKES. 
I have been able to examine sixteen different species of snakes. 
As I hope shortly to describe in detail the results of my investigations 
into the life-histories of the hemogregarines of Ceylon snakes, I 
will here give merely a brief record of my observations :— 
A.—I nfected. 
1. Dipsadomorphus forstenit.—Blood containing hemogregarines 
in large numbers. A single individual (Colombo, Aug.). 
2. Dipsadomorphus ceylonensis.—One individual, slightly in- 
fected with hemogregarines (Peradeniya, Aug.). ; 
3. Dryophis mycterizans—The green whip snake was found to 
harbour a hgmogregarine (though not invariably) at Colombo 
(Aug.) and Peradeniya (Sept.). A single individual examined at 
Trincomalee (Sept.) was negative. 
4. Naia tripudians.—A single cobra (Peradeniya, Sept.) was 
infected with hemogregarines. 
5. Tropidonotus stolatus —Out of four individuals examined, two 
showed no blood parasites (Peradeniya, Aug. ; Trincomadee, Sept.). 
One individual (Colombo, July) had spirochets in its blood. (See 
p- 77.) One individual (Peradeniya, Aug.) was infected with 
trypanosomes (see p. 77) and hemogregarines. 
6. Zamenis mucosus.—Rat snakes were always infected with 
hemogregarines at Colombo (Aug.) and Peradeniya (Aug.). One 
individual examined at Trincomalee (Sept.) was not infected. 
B.—Not infected. 
7. Ancistrodon hypnale—Two individuals from Hakgala (Sept.) 
and one from Kandy (Sept.). 
8. Cerberus rhynchops.—One individual from Negombo (Sept.) 
and two from Colombo (Sept.). 
9. Dendrelaphis tristis (= Dendrophis pictus).—-Two from Sigiriya 
(Sept.), one from Trincomalee (Sept.), and one from Peradeniya 
(Sept.). 
» 10. Helicops schistosus—Two specimens: one small (Colombo, 
Aug.), the other very large (Colombo, Sept.). 
11. Hydrus platurus.—A single specimen (Colombo, July). 
