But, before doing so, I want to hear facts, just as in the present 
article I am about to point out a number of facts which are 
irreconcilable with Dr. Sambon’s theory. lie assures his atidience 
that ‘ certainly there were more and better reasons to separate Sck. 
mansoni from Sch. fuemaiobium ' p. 46) than there were in my 
two cases referred to by him. \\ e shall sec how far this is true. 
Dr. Sambon first pretends that the other known Sekistosma 
species do not show any marked differences in tlicir adult stages. 
The Scb. bovis, for instance, resembles the S<h. htemalobxum so 
closely that, indeed, it would be very difficult for anyone to point out 
any marked difference between the adult forms of the cattle parasite 
and tliose of ScA. hcematobium‘ (igoSb, p. 40). To this I lave to 
rep y that Dr. Sambon is mistaken. 1 o ' anyone ' who actually has 
some helminthological knowledge a single glance with the naked eye 
will suffice to tell Sch. hcematobium from Sch. boi'is, and a good 
pocket lens will suffice to differentiate .SV/r. jap..nicum from S<k. 
^matobium. There are, m addition, quite well-marked intemai 
1 erenccs which Di. Sambon might have known had he consulted 
the latest description given of .SV/y. boxns by Leuckart (1894. P- 4 /' 0 f) 
lort review 1 gave of Katsuhaua’s paper on Sck. )ctfonum 
. ^ Gambon is not apparently aware of tk 
T ■" => P^r reason for the slate- 
fac in n" T" absent. As a matter of 
Schis/Oio ° differentiation of any of tlie species of 
affectincr inim ° ^ ^ic various Schistosomes 
to C sambon. I will no. ref« 
to them any furtlicr in this discussion 
thus, Dr. Sambon is noi '.ku _» 
cal character of tl.c adult SVA k>rodxxce imy distinctive anatomi- 
cgg. It is a wpII I- / 1 licrc remains only ik 
species of parasites" nm'v »»a n y. but by no means all 
the case, the aspect of L e " 
of certain species 1 do *1 of the distinctive characters 
single case m which two sL’cier'7"' remember one 
lodged '1^ 11 ^ , cs of parasitic worms ackno»- 
The fact .s eas.; -«=■>• by.heTeg^ 
“ I have Wo. .e a/e ^ 
