C. M. Wenyon 
317 
REFERENCES. 
Laveran and Mesnil (1904). Trypanosomes et Trypanosomiases. 
Minchin, E. A. (hi. 1908). Investigations on the Development of Trypanosomes 
in the Tsetse-Flies and other Diptera. Quart. Journ. Micr. Sci. Vol. lii. 
pp. 159 et seq. 
Wrublewski, K. J. (x. 1908). Ein Trypanosoma des Wisent von Bielowesch. 
Centralbl. fur Bakteriol. Bd. xlviii. pp. 162, 163, Plate. 
Wenyon, C. M. (1909). Report of the Wellcome Research Laboratories , Khartoum. 
Vol. ill. pp. 142, 143. 
DESCRIPTION OF PLATE XXI. 
Trypanosoma erythrolampri Wenyon, and Haemogregarina of Erythrolamprus 
aesculapii (Dum6ril and Bibron). 
Fig. 1. Narrow trypanosome with nucleus adjacent to micronucleus. 
Fig. 2. Wide trypanosome with nucleus at side of micronucleus. 
Figs. 3, 4. Two wide forms with true trypanosome structure. 
Fig. 5. Narrow form with nucleus and micronucleus as in Herpetomonas. 
Figs. 6, 7. Two haemogregarines showing short and long form. 
