1862. ] DR. T. S. COBBOLD ON HUMAN ENTOZOA. 291 
I have elsewhere fully exposed the fallacy of combining the genera 
Fasciola and Distoma. In two of the specimens which Mr. Busk 
injected with mercury, the injection has passed from the digestive 
into the aquiferous system, which latter, in its arrangements, does 
not differ materially from that of Fasciola hepatica. The original 
account in Dr. Budd’s valuable work on Diseases of the Liver 
speaks of a “branched uterine tube;” but this description is mani- 
festly erroneous, and probably refers to the division of the upper 
end of the vitelligene tube into the ducts which come from the yelk- 
forming glands on either side of the body. 
3. DistomMa LANCEOLATUM, Meblis. 
D. lanceolatum, Mehlis, Bucholz, Gurlt, Valentin, Chabert, Du- 
jardin, Diesing, Blanchard, Baird, Kichenmeister, Leidy, Moulinié, 
Cobbold, &e. 
D. hepaticum, Zeder, Rudolphi, Bremser, Olfers, Bojanus, Creplin, 
Gurlt, Owen. 
D. conus, Gurlt. 
Fasciola hepatica, Bloch, Jérdens, Bosc. 
F. lanceolata, Rudolphi, Moquin-Tandon. 
Planaria latiuscula, Goeze. 
Dicrocelium lanceolatum, Weinland. 
Only two instances of the occurrence of this well-marked form in 
the human subject are recorded, one by Bucholz, the other by Mehlis 
and Chabert. The latter occurred in France, in a girl twelve years 
of age, from whom Chabert expelled a large number of specimens by 
the employment of empyreumatic oil. The specimens found by Bu- 
cholz in the body of a prisoner who died from fever are, it is believed, 
still preserved in the Museum of the University of Jena. Mehlis 
was the first to establish clearly the non-identity of this species with 
the common fluke,—a view which was shared also by Schiffer and 
Rudolphi, but subsequently abandoned by the latter. Its structure 
has been well investigated by Valentin, Blanchard, Walter, and 
Kiichenmeister, from examples occurring in the gall-bladder and 
biliary-ducts of our domesticated ruminants. 
4. Disroma opHTHALMosiuM, Diesing. 
D. ophthalmobium, Diesing, Kichenmeister, Cobbold, Mogquin- 
Tandon. 
D. oculi-humani, Gescheidt. 
? D. (lentis), Von Ammon. 
Dicrocelium oculi-humani, Weinland. 
? Monostoma lentis, Nordmann, Gescheidt, Diesing, Kiichen- 
meister, Cobbold, Weinland. 
? Festucaria lentis, Moquin-Tandon. 
Gescheidt found four specimens in the eye of a child five months 
old, born with lenticular cataract. No one of them exceeded half a 
line in length ; and they were situated between the lens and its cap- 
sule, where they could be recognized as so many dark spots on the 
