480 



FAMILY: TRYPANOSOMID.E 



lineatus. It measured 19-5 microns in length, had a well-developed 

 membrane and a central nucleus. According to them, it resembled 





* 







1?^ 





Fig. 202. — Trypanosoma vespertilionis [=Schizo- 

 trypanum jyipistrelli Chatton and Courrier, 

 1921) OF THE Bat, Vesperugo plpistrellus. 

 (After Chatton and Courrier, 1921.) 



1. Two cysts in the mucosa of the intestine ( x ca. 100). 



2. Two cysts in the stroma of the ovary, one of which 



(rt) contains crithidia forms, and the other (b) 

 trypanosomes (x ca. 500). 



3. a and b, Trypanosomes from the blood; c, crithidia 



form from the tissues ; d, cultural form of trypano- 

 some (x ca. 2,000). 



T. brucei rather than T, 

 Leger and Baury (1923) de- 

 scribe as T. morinorum a 

 trypanosome of the bat [Hip- 

 posiderus tridens) of Senegal. 

 It is broader than T. vesper- 

 tilionis, and measures 30 by 

 7 to 8 microns. The part of 

 the body behind the kineto- 

 plast represents about half 

 the length of the body. The 

 kinetoplast is close to the 

 nucleus, which is centrally 

 placed. There is a free flagel- 

 lum of 7 to 15 microns in 

 length. A closely allied form 

 is T. heybergi, w^hich was dis- 

 covered by Rodhain (1923) 

 in the insectivorous bat, 

 Nycteris hispida, of the 

 Belgian Congo (Fig. 201, ;,-4)- 

 It is also a broad trypano- 

 some, but differs from 

 T. morinorum in some of its 

 dimensions. 



As regards the various 

 trypanosomes mentioned 

 above, it is at present im- 

 possible to decide whether 

 those that have been given 

 specific names are good 

 species or not. In no case 

 has the complete develop- 

 ment been studied, and no- 

 thing is known of the range 

 of variation of the blood 

 forms of any one of them. 



The work of Chatton and 

 Courrier (1921) shows that the life-history may be a very complicated one. 

 These observers have described, under the name Schizotrypaniim pipistrelli, 



