80 
SPOLIA ZEYLANICA. 
In dried blood-films fixed in absolute alcohol and stained with 
hematoxylin and eosin, the body of the organism is found to have 
contracted within its cuticular sheath, leaving a faintly bluish- 
stained membrane projecting at each end of the body. When 
prepared according to Leishman’s modification of Romanowsky’s 
method, the sheath remains colourless. In stained preparations 
the tail of the body inside the sheath ends bluntly, but is more 
attenuated than the anterior portion. The length of the body 
without the sheath is ‘09 mm., with the sheath T4 mm. 
Two adult females were found imbedded in the musculature 
of the body wall, one in the ventro-lateral abdominal region, the 
other in the dorsal wall of the body-cavity. The former was 
loosely coiled upon itself, the latter appeared as a deeply winding 
white clew (c/. fig. 1). 
The tail is attenuated and bent round ; at its extremity there is 
a rounded knob, shortly in front of which the vent lies on the 
ventral side (fig. 2). The head is slightly spatulate, with a 
sense-organ on each side near the front; the mouth is terminal, 
leading into a buccal capsule from which a short vestibule leads 
back to the oesophagus (fig. 3) ; the latter is -53 mm. long or 
of the total length. The adult worm measures 38 mm. in length 
by *5 mm. in breadth. 
For this species, which we take to be new, we propose the name 
of Filciria mansoni in honour of the distinguished authority on 
parasitic tropical diseases—Sir Patrick Manson. 
When removed from the body of the host and placed in dilute 
formalin both adult specimens discharged a large number of 
eggs and embryos into the fluid, from the generative orifice 
which is situated near the anterior end of the body (fig. 4). 
Trypanosomosis. 
Trypanosoma lewisi (Sav. Kent). 
Under this heading we have to record the occurrence of Try¬ 
panosoma lewisi in the house-rats (Mus decumanus) of Colombo. 
Probably at least 25 per cent,, of adult rats are infected. In 
Bombay Dr. Hanna has noted that 12 per cent, of the rats 
harbour the parasite. 
The number of parasites varies in different hosts. Sometimes 
they are so numerous, the lashings of the flagellum so powerful, 
and the rapidity of their movements so great, that the blood 
appears to be seething with them, Dr. Hanna* has found other 
* Hanna. W. Trypanosoma in Birds in India. Quart. Journ. Micro. Sc. vol. 
17, 1903, pp. 433-438, pi. 32. 
