W. Ntcoll 
293 
the only organs which remain visible are the oral sucker, the yolk glands 
and the ends of the intestinal diverticula. The numerous eggs are 
brownish-yellow to dark brown and measure 0-028-0-032 x 0-018- 
0-019 mm. 
It is evident that this species, though bearing a considerable resem¬ 
blance to Dolichopera parvula, differs from it in several important 
respects. In the first place D. parvula is a much smaller form. The 
ventral sucker is situated further back. The testes and yolk glands 
are relatively further from the tip of the tail, while the yolk glands are 
much less extensive. The cirrus pouch is very much shorter and smaller, 
and the uterus is situated for the greater part in front of the ventral 
sucker. In some respects'these differences appear to be of much more 
than specific value but from various considerations it appears inadvisable 
at the present moment to separate these two forms generically. 
REFERENCE. 
McAlpine, D. (1891). Remarks on a Fluke Parasite in the Copper-head Snake. 
Proc. Roy. Soc. Viet., n.s., rrr. 40-43. 
