28 
Intestinal obstruction produced by worms. This oc- 
curred in a very small bird (yellow-bellied liothrix- 
Liothrix luteus — No. 5121). The combination of numer- 
ous, comparatively large parasites (tape-worms) and a 
small gut made this accident possible. 
Coccidiosis in Himalayan Thars. This year we have 
had another case of this disease, but this time the beast 
was not so heavily infested as our first. Note was made 
of our first case in the 1917 Report (page 37), and in 1918 
(page 31) of its disappearance after treatment with castor 
oil. Theobald Smith has recently reported epizootics of 
^'red diarrhoea" in New Jersey cattle from coccidiosis, as 
the first appearance of the disease in America. In reply 
to a personal communication in which his attention was 
called to the disease here, he states that the two diseases 
are different. We are not aware yet how the disease 
originally came to affect our domestic animals, but the 
analogy between these two coccidioses illustrates the pro- 
priety of investigating and reporting imported diseases. 
Hydatid (echinococcus) cysts. This disease, caused by 
the presence of the intermediate stage of the dog tape- 
worm, has been found in several animals this year. The 
largest examples were found in a camel, Camelus drome- 
darius (No. 5100), but this was not as large as in two 
others which were affected in past years. The feces' of 
nearly all the nearby canidse (wolves, foxes, dogs) were 
examined, but, although several other kinds of para- 
sitic ova were found, none were discovered to indicate 
that the dog tape-worm was present. From this it is 
concluded that the animals had brought the disease into 
the Garden with them. It is not dangerous for other ani- 
mals, being transmissible to the dog family only and pro- 
vided the beast eat the uncooked cysts. 
Other animals reported this year with the disease are 
Indian antelope (Antilope cervicapra No. 5438) and urial 
(Ovis vignei No. 5410). But all were fight cases and 
showed other diseases as the cause of death. While the 
number of cases is, therefore, greater than usual it has no 
hygienic significance. 
