90 Trypanosoma lewisi, etc. 
Patton, W. S., and Strickland, C. (xii. 1908). A critical Review of the relation 
of blood-sucking invertebrates to the life cycles of the trypanosomes of verte¬ 
brates, with a note on the occurrence of a species of Crithidia, etc. Parasitology , 
I, p. 322. 
Prowazek, S. (1905). Studien iiber Saiigetiertrypanosomen. Arbeit, a. d. Eaiserl. 
Gesundh., xxii, pp. 351—395, with Plates I—VI and 4 Text Figs. 
Swingle, L. D. (29. v. 07). Some studies on Trypanosoma lewisi. Trans. Amer. 
Microsc. Soc., xxii, pp. Ill—122. 
Woodcock, H. M. (1909). The Haemoflagellates and allied forms. A Treatise on 
Zoology , edited by Sir Ray Lankester. 
