NOTES ON TREMATODES FROM THE PHILIPPINES 1 
By Ernest Carroll Faust 
Parasitologist, Union Medical College, Peking, China 
ONE PLATE 
Through the courtesy of Prof. Frank G. Haughwout I have 
had an opportunity to examine three flukes from the Philippines 
which are described in this paper. 
Fasciola gigantica Cobbold 1856. Plate 1, figs. 1 and 2. 
Fasciola gigantica is a long lanceolate fluke found in the liver 
of a carabao, Bubalus bubalus Linn., killed at Manila. It has a 
length measurement of 29 to 36 millimeters and a width of about 
8 millimeters. Although the sides of the body are almost 
parallel there is a distinct anterior end in the form of a cone, 
a characteristic which shows its relationship to Fasciola hepatica. 
The integument is uniformly spinous. In the region of the 
uterus the body is distended dorsoventrad, but along the margins 
it is compressed and slightly fluted. 
The oral sucker is small (13 millimeters) while the acetab- 
ulum, almost within the limits of the anterior cone, is 22 
millimeters in diameter. A very small pharynx leads into a 
typical fascioliform digestive tract. Compared with F. hepatica 
the secondary csecal branches number almost twice as many and 
the ultimate pockets are much more numerous. The general 
type of branching is, however, quite the same in the two species. 
The excretory bladder extends anteriad as far as the ootype. 
The organs of the genital system offer a ready method of dif- 
ferentiating this species from Fasciola hepatica. The testes are 
confined to the anterior half of the animal. The posterior testis 
is fairly compact and has five or six main arms. The anterior 
testis, which lies just in front of its mate, is more elongated 
and has about eight arms. The ultimate testicular caeca are 
definitely set off from the tubes which lead out into the vasa 
efferentia, so that the entire organ has the appearance of berries 
1 Contribution from the department of pathology, Union Medical College, 
Peking. 
627 
