214 ANNIK POliTKIf. 



is the inference that longitudinal division takes place. 

 This would be in accordance witii the behaviour of other 

 spirochaetes, for Fantham (1907-8-9) has shown that both 

 forms of division occur in S. balbianii and S. anodontae. 

 1 (1909) also have observed the same, while the joint 

 researches of Fantham and myself (1909) have demonstrated 

 that both directions of division occur in S. recur rent is and 

 S. duttoni, and that there is a periodicity in the direction 

 of division. 



The movements of S. melophagi are fairly active, and 

 are of the typical spirochaete nature, nameh', of forward 

 progression accompanied by spiral or corkscrew rotation on 

 its course. 



The occurrence of 8. melophagi in the ovaries, ova and 

 puparia of the ked is of much interest, for it indicates that 

 the spirocha3te is transmitted hereditarily. Hence Melo- 

 phagus ovinus can transmit both Cr it India melophagia 

 and Spiroclueta melophagi to its offspring. 



Apiexdix II. 



Note on a Fungus found in the Malpighian Tubules 

 and Intestine of Melophagus ovinus. 



A fungus was present in many specimens of Melophagus 

 ovinus examined, especially those obtained from Scotland. 

 Crithidia were not seen in the '^keds" received from 

 Scotland, and I have shown experimentally that the action 

 of the fungus is fatal to the flao-ellate. 



The fungus occurred chiefly in the Malpighian tubules of 

 the insect, and to a lesser extent in the intestine. The 

 Malpighian tubules were frequently- blocked by the fungus. 

 A brief description of the fungus may now be given. 



The hyphte were long and filamentous with few septa. 

 Many spores were produced. At the extremity of some 

 hyphas globular heads were formed, possibly due to sexual 

 processes. The globular bodies contained many nuclei (text- 

 fig. 11) fairly evenly distributed through the protoplasm. 



