84 SPOLIA ZEYLANICA. 
' It will not perhaps be superfiuous to point out once more that 
I have, in company with other workers on Indian and Ceylon 
forms, found that lizards do not appear to be infected with blood 
Protozoa to anything like the same extent that European and 
African lizards are. 
One other point, in conclusion, appears to me worthy of comment. 
Wherever I have found trichomonads, I have always found both 
Trichomonas and Trichomastix associated together. This supports, 
I think, to some extent the view of Doflein, who believes that these 
two “genera” are in reality merely forms of one and the same 
organism. For my own part, however, I prefer to consider them as 
distinct genera for the present, mainly on the ground that no real 
intermediate forms have ever been discovered. This is, however, 
a matter of but small importance. 
DTITHERATURE REFERENCES. 
Berestneff, N. (1903), “ Uber einen neuen Blutparasiten der 
indischen Frésche.” (Arch. Protistenk., II., p. 343.) 
Bezzenberger, HE. (1904), ‘‘ Ueber Infusorien aus asiatischen 
Anuren.” (Arch. Protistenk., III., p. 138.) 
Billet, A. (1895), “ Sur les Hématozoaires des Ophidiens du Haut- 
tonkin.”- (CC. R.Soc. Biol, X:+(2)~ pt 29.) 
Borner, C, (1901), “ Untersuchung Uber Hamosporidien.” 
(Zeitschr. f. wiss. Zool., LXIX., p. 398.) 
Butschli, O. (1887-89), ‘“‘Infusoria”’ in Bronn’s “ Klassen u. 
Ordnungen.” : 
Castellani, A., and Willey, A. (1904), ‘‘ Observations on the 
Hematozoa of Vertebrates in Ceylon.” (Spolia Zeylanica, I1., 
p. 78.) 
Castellani, A., and Willey, A. (1905), ‘‘ Observations on 
Hematozoain Ceylon.” (Quart. Journ. Micro, Sci., XLIX., p. 383.) 
Dobell, C. C. (1907), ‘‘ Trichomastia serpentis, n. sp.” (Quart. 
Journ. Micro. Sci., LI., p. 449.) 
Dobell, C. C. (1908), “Some Notes on the Hemogregarines Para- 
sitic in Snakes.”’ (Parasitology, I., p. 289.) 
Dobell, C. C. (1909), ‘* Researches on the Intestinal Protozoa of 
Frogs and Toads.”’ (Quart. Journ. Micro. Sci., LIIT,, p. 201.) 
Dofiein, F. (1909), ‘* Lehrbuch der Protozoenkunde.” Jena. — 
Frenzel, J. (1891), ‘‘ Leidyonella cordubensis nov. gen. nov. spec. 
Kine neue Trichonymphide.” (Arch. Mik. Anat., XXXVIII., 
p. 301.) 
Grassi, B. (1888), ‘ Morfologia e Sistematica di alcuni Protozoi 
parassiti.” (RC. R. Acead. Lineei., IV., p. 5.) 
