630 The Philippine Journal of Science mo 
scribed Paramphistoma, but is especially differentiated by the 
extremely large acetabulum. Perhaps it most nearly approaches 
Paramphistomum explanatum, which species is, however, larger 
and has heavily lobed testes (Fischoeder 1904 :599).(3) 
Phagicola pithecophagicola g. et sp. nov. Plate 1, figs. 4 to 6. 
This interesting fluke was secured from the intestine of the 
monkey-eating eagle, Pithecophaga jefferyi Grant. A few of the 
specimens were obtained in a smear prepared by Professor 
Haughwout from the host soon after death. Others were teased 
out of a portion of the intestine which had been fixed in Bouin’s 
fluid and preserved in 80 per cent alcohol. The host was deter- 
mined by Mr. R. C. McGregor, ornithologist of the Bureau of 
Science, Manila. 
Phagicola pithecophagicola is a minute fluke with a pyriform 
body which is entirely covered with jagged spines. The oral 
sucker is directed almost entirely forward and has on its inner 
margin an uninterrupted circlet of twelve blunt spines (Plate 1, 
fig. 5). The body measures 0.35 millimeter in length by 0.22 
millimeter in greatest width. The oral sucker is fairly constant 
in diameter, averaging 78 p. The acetabulum, somewhat behind 
the middle of the body, measures only 47 p in diameter. The 
region of the body between the two suckers is capable of 
enormous extension as is also the unforked portion of the in- 
testine. 
A long prepharynx leads back into the pharynx, an important 
sphincter 26 p in diameter, which lies midway between the oral 
sucker and the acetabulum. Behind this is a moderately long 
oesophagus. The casca extend far laterad, but reach no farther 
* posteriad than the middle of the acetabulum. 
The excretory system has a bladder approaching that of the 
Brachycoeliinse, intermediate between a typical V-type and a 
typical Y-type. It possesses little or no muscular elements. 
The collecting tubules of the worm have not been worked out. 
The testes are ovoid glands about 70 p in greater diameter, 
slightly oblique in position, considerably postacetabular and 
usually lying ventral to the vitelline follicles. The cirrus sac is 
lacking. The seminal vesicle is a flask-shaped organ lying trans- 
versely just behind the acetabulum, curving anteriad on the right 
side of that organ and proceeding forward as a nonmuscular 
cirrus tube which coils only slightly as it advances to the genital 
pore. No prostate glands have been found. 
The ovary is situated to the right of the ootype. It is sub- 
ovoid in outline and appreciably smaller than the testes. The 
