GENUS: HERPETOMONAS 



365 



the work of Chatton and his collaborators (1911-1913) on the parasites of 

 species of Drosophila, and that of Patton (19126) on Musca nebulo and 

 Lucilia serenissima, it appeared at one time that the specificity of the 



Fig. 169. — Eerpetomonas muscariim from the Intestine of the House Fly, 



FIXED IN SCHAUDINN'S FlUID AND STAINED WITH IrON H.EMATOXYLIN 



(x 2,000). (Original.) 



1-3. Short forms with single ilagellum. 



•4-9. Dividing forms, showing formation of new iiagella as new outgrowth and division of kineto- 

 plast and nucleus. 



insect flagellates for their hosts was greater than has been supposed, and 

 that it was possible that many of the flagellates which had been regarded 

 as H. muscarum were in reality distinct species. Patton (1921), however, 



