636 
Extracts from British and Foreign Journals. 
ON THE DEVELOPMENT OF BILHARZIA ILEMATOBIA; TO- 
GETHER WITH REMARKS ON THE OVA OF ANOTHER 
URINARY PARASITE (THE SO-CALLED TRICHINA CYS¬ 
TICA OF DR. SALISBURY) OCCURRING IN A CASE OF 
HEMATURIA FROM NATAL * 
By Professor T. Spencer Cobbold, M.D., F.R.S., 
Lecturer on Botany, Parasites, and Parasitic Diseases at the Royal 
Veterinary College. 
In my recently published f Lectures on Practical Hel¬ 
minthology/ I have recorded the case of a little girl 
whose parents sought my advice in the spring of 1870. 
She was suffering from the effects of an invasion by 
the African blood-fluke, a parasite now very generally recog¬ 
nised by the combined generic and specific title of Bilharzia 
hamatobia. 
As some misapprehension appears to exist on the sub¬ 
ject, I may mention that I originally employed the generic 
title Bilharzia to designate a male specimen of the worm, 
which I found on the 4th of December, 1857? in the portal 
blood of a sooty monkey ( Cercopithecus fuliginosus ) that 
had died at the Zoological Society's Menagerie, Regent's 
Park. 
It must be understood that the ordinary rules of zoological 
nomenclature rendered it imperative that the original title of 
Bistoma , as applied to this entozoon by Bilharz and Grie- 
singer, should not be allowed to remain. It w^as quite clear 
that its structural characters departed too strongly from those 
presented by the ordinary fluke-type to permit of its being 
zoologically associated with the Distomes properly" so called; 
consequently, various helminthologists proposed new f and 
more appropriate names. The late Dr. Carl Moritz Diesing 
of Vienna, Dr.D. F. Weinland of Frankfort, andProfessorMo- 
quin-Tandon of Paris, severally suggested the titles Gynaco- 
phorus, Thecosoma, Schistosoma ; but, when it was subsequently 
found that the title Bilharzia had been proposed by myself 
some six months before Diesing communicated his paper to 
* Read before the Metropolitan Counties Branch, May 17th, 1872. 
