A. Porter 
389 
Patton, W. S. (30. i. 1909). The Parasite of Kala-azar and allied organisms. 
Lancet , I. pp. 306—309, 2 figs. 
— (1909). A Critical Review of our present knowledge of the Haemoflagellates 
and Allied Forms. Parasitology, n. pp. 91—143. 
Patton, W. S. and Strickland, C. (xii. 1908). A Critical Review of the Relation 
of Blood-sucking Invertebrates to Life-cycles of the Trypanosomes of Verte¬ 
brates, etc. Parasitology , i. pp. 322—346, 12 figs. 
Prowazek, S. v. (1904). Die Entwickelung von Herpetomonas, einem mit dem 
Trypanosomen verwandten Flagellaten (vorlaufige Mitteilung). Arb. a. d. 
Kaiserl. Gesundh. xx. pp. 440—452, 7 figs. 
Roubaud, E. (1908). Sur un nouveau flagelle parasite de l’intestin de Muscides au 
Congo fran 9 ais — ( Leptomonas mirabilis). Compt. Rend. Soc. Biol. lxiv. pp. 
1106—1108, 11 figs. 
- (1908). Leptomonas mesnili, n. sp., nouveau flagelle A formes trypanosomes de 
l’intestin de Muscides non piqueurs. Compt. Rend. Soc. Biol. lxv. pp. 39—41, 
11 figs. 
EXPLANATION OF PLATE V. 
All figures were outlined with an Abbe-Zeiss camera lucida, using a 2 mm. apochro- 
matic (Zeiss) or -jV inch achromatic (Zeiss) objective and compensating oculars 8 and 12 
of Zeiss. 
The magnification is, in all cases, approximately 1300 diameters, except Figs. 34 and 
36 which are approximately 1950 diameters. 
Figs. 1—18. Pre-flagellate stages. 
Fig. 1. Oval pre-flagellate with large nucleus and blepharoplast. Flagellar area below 
rod-like blepharoplast. Delafield’s haematoxylin. 
Fig. 2. Stage in the division of the pre-flagellate. The Herpetomonad has elongated, 
the blepharoplast is divided and the nucleus partly divided. Chromatin staining 
area above blepharopiasts. Delafield. 
Fig. 3. Further stage in division. Both nucleus and blepharoplast are divided, and 
a vacuole is forming in the mid-line. Division of body commenced. Thionin. 
Fig. 4. Still later division. Fission of body has continued. Flagellar precursor seen. 
Delafield, 
Fig. 5. Herpetomonad whose flagellum has begun to appear. Delafield. 
Fig. 6. Parasite with flagellum at edge of body. Giemsa. 
Fig. 7. Form showing flagellum just clear of the body. Thionin. 
Fig. 8. Rounded parasite with large blepharoplast and basal granule, near which the 
thick flagellum arises. Iron-haematoxylin. 
Fig. 9. Parasite with flagellum lying very close to edge of the body. Giemsa. 
Fig. 10. Large pre-flagellate of slightly irregular contour. Very alveolar protoplasm. 
Large chromatin granules in the nucleus. Giemsa. 
Fig. 11. Parasite with flagellum free from body. Large, somewhat oval blepharoplast 
present. Thionin. 
Fig. 12. Large pre-flagellate with basal granule and rounded nucleus. Delafield. 
Fig. 13. Large form, showing flagellum just extended beyond the body. Thionin. 
Figs. 14, 15. Somewhat pear-shaped parasites with free flagella. Their anterior ends 
are somewhat attenuate. Giemsa. 
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