352 



PROTOZOOLOGY 



1937). Transmission is by blood-sucking arthropods or leeches. 



T. rotatorium (Mayer) (Fig. 146, a). In tadpoles and adults of 

 various species of frog; between a slender form with a long projecting 

 flagellum measuring about 35/x long and a very broad one without 

 free portion of flagellum, various intermediate forms are to be 

 noted in a single host; blood vessels of internal organs, such as kid- 

 neys, contain more individuals than the peripheral vessels; nucleus 

 central, hard to stain; blepharoplast small; undulating membrane 



Fig. 146. a, Trypanosoma rotatorium X750 (Kudo); b, T. inopinatum, 

 X1180 (Kudo); c, T. diemyctyli, XSOO (Hegner); d, T. giganteum, 

 X500 (Neumann); e, T. granulosum, XlOOO (Minchin); f, T. remaki, 

 X1650 (Kudo); g, T. percae, XlOOO (Minchin); h, T. danilewskyi, 

 XlOOO (Laveran and Mesnil); i, T. rajae, X1600 (Kudo). 



highly developed; myonemes prominent; multiplication by longi- 

 tudinal fission; the leech, Placobdella marginata, has been found to 

 be the transmitter in some localities 



T. inopinatum Sergent and Sergent (Fig. 146, b). In blood of vari- 

 ous frogs; slender; 12-20/x long; larger forms 30-35/z long; blepharo- 

 plast comparatively large; transmitted by leeches. 



Numerous species of Trypanosoma have been reported from the 

 frog, but specific identification is difficult; it is better and safer 

 to hold that they belong to one of the 2 species mentioned above 

 until their development and transmission become known. 



T. diemyctyli Tobey (Fig. 146, c). In blood of the newt, Triturus 

 viridescens ; a comparatively large form; slender; about 50ju by 2-5ju; 

 flagellum 20-25/n long; with well developed undulating membrane. 



