35 
This shows that with us the amusing little marmosets 
and squirrel monkeys are, verminously speaking, the 
most reprehensible of all primates. The lemures (62 
examined) showed a slightly lesser percentage than the 
primates — eight per cent. Of the marmosets, the black 
eared and the common ones were practically the only 
ones affected. The pinche marmosets have shown them 
for the first time this year. Most of these had been in 
the garden for a considerable period — at least one year. 
None died so shortly after arrival as to indicate that 
the worms must have been brought by the beasts into 
the garden. In regard to the squirrel monkeys it was 
just the opposite. Of the three which were infested 
one had died two days and another fourteen days after 
arrival. 
Periproventriclar Filarice of Birds. Last year we 
noted fourteen specimens of these worms which tend 
to coil into masses in the neighborhood of the provent- 
ricle of smaller birds. This year the count is twenty- 
three — a very notable increase. Whereas at first this 
may seem formidable, a little analysis quickly tempers 
it. In the first place, death was not due in all cases to 
the parasite. Two birds had injuries, two others harbored 
that known pathogen, spiroptera, and a fifth had an 
acute general infection. In the second place the varieties 
affected are not birds of especial financial value. To 
summarize, the infestment is one of small, inexpensive 
birds and not to be compared to the spiroptera enzootic 
of parrots. As brought out in last year's report the 
investigation of this filariasis did not promise well be- 
cause it would necessitate handling small, nervously 
unstable birds, and this might entail losses incommen- 
surate with any conceivable benefits. The past year 
has added but little to our previous knowledge. Uni- 
quivocal evidence that these worms produce important 
disease has been limited this year to (1) the association 
of a profound anemia in one bird, a silver-eared liothrix, 
(2) a ruptured inferior vena cava in a bulbul and (3) 
associated subserous cysts of the intestines in a weaver. 
