FURTHEil NOTES ON A TEYl’ANOSOJIE. 
123 
A leech (5a) was put on to an infected skate at 9.30 p.m. one 
evening; 12 hours later it was feeding, and had already 
ingested a good deal of blood ; 2-T hours later it had ceased 
feeding. The leech was opened I?! hours after it had been 
first ])iit on to the skate, aud 3^ after it had finished feeding. 
So that the earliest ingested Trypanosomes had been in the 
leech about 16 — 17 hours, and the last ingested ones about 
3 — 4 hours. 
The blood was very fresh-looking, and no obvious changes 
Text-fig. 1. 
Drawing of live Trypanosome from the crop of Pontobclella. 
'J'he animal, which has been recently ingested with the blood, 
is in process of rounding off. 
had taken place in the blood corpuscles. The Trypanosomes 
showed very variable appearances. A good number still 
showed the flagellum, but were no longer in the typical Try- 
paniform condition. For the most part, they were somewhat 
pyriform (text-fig. 1), with an immensely long, thick flagellum 
protruding from one end. Some very fantastic appearances 
were seen where the body of the Trypanosome had assumed 
an irregular shape with curious rounded bulges, and where 
the flagellum had broken loose from the membrane, and had 
become tangled round the body, the end was usually free 
