182 
E. A. MINCH IN AND H. M. WOODCOCK. 
Type of form. 
T. fringillinarum. 
T. noctuae . 
A. Small forms (slen- 
der spindles), smallest 
individuals observed 
Total length, 25 /x. 
Greatest breadth, /x 
Total length, 26| /x. 
Greatest breadth, 3 \ fi. 
b. Medium - sized, 
slender forms (so- 
called “ definitive ” 
forms), average size 
of fully developed in- 
dividuals 
Total length, 41-45 /x 
Greatest width, 4|-5 j u. 
Total length, 44-47 £ /x. 
Greatest width, 5-5 1 /x. 
c. Large, massive 
“ blue ” forms, aver- 
age size of largest 
individuals 
Total length, 45-48 /x 
1 Greatest breadth, 51- 
65 /x (probably slightly 
flattened out — see text) 
Total length, 54-60 /x. 
Greatest breadth, 5 ±- 6 /J 
1 
j • ' 1 
The Lister Institute, 
April, 1911. 
References to Literature. 
1. Aragao, H. de B. — “ Ueber den Entwickelungsgang und die Ueber- 
tragung von H a± ni o p r o t e u s c o 1 u m b se , ” ‘ Arch . P ro fcis t enk . , 
xii, 1908, p. 154, pis. 11-13. 
2. Chagas, C. — “Ueber eine neue Trypanosomiasis des Menschen ; 
Stndien iiber Morphologie nnd Entwickelnngscyclns des 
Scliizotrypanuni cruzi n.g., n.sp.,” 4 Mem. Inst. Oswaldo 
Cruz,’ i. 1909, p. 1, pis. 9-13. 
3. Dutton, J. E., Todd, J. L., and Tobey, E. N.— “ Concerning Certain 
Parasitic Protozoa observed in Africa,” 4 Mem. Lvpl. Sch. Trop. 
Med.,’ xx, 4 Ann. Trop. Med. Parasitol.,' i, 1907, p. 287, pis. 20-32. 
4. Fantham, H. B. — 44 Observations on the Parasitic Protozoa of the Red 
Grouse,” 4 Proc. Zool. Soc.,’ ii, 1910, p. 692, pis. 59-61. 
5. Hartmann, M. — “Notiz iiber eine weitere Art der Scliizogonie bei 
Scliizotrypanuni cruzi,” 4 Arch. Protistenk.,’ xx, 1910, p. 361. 
6. Laveran, A. — 44 Sur un Trypanosome d’une chouette,” 4 C. R. Soc. 
Biol.,’ lv, 1903, p. 528. 
7. “Contribution a 1’ etude de 4 Hsemamoeba,’ ziemanni,” 
t. c., p. 620. 
8. Mathis, C., and Leger, M.— 44 Leucocy tozoon de la poule,” op. 
cit., lxvii, 1909, p. 470. 
