1862.] DR. T. S. COBBOLD ON HVMAN ENTOZOA. 291 



I have elsewhere fully exposed the fallacy of combining the genera 

 Fasciola and Bistoma. 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. DiSTOMA liANCEOLATUM, Mchlis. 



B. lanceolatum, Mehlis, Bucholz, Gurlt, Valentin, Chabert, Du- 

 jardin, Diesing, Blanchard, Baird, Kiichenmeister, Leidy, Moulinie, 

 Cobbold, &c. 



Z). hepaticum, Zeder, Rudolphi, Bremser, Olfers, Bojanus, Creplin, 

 Gurlt, Owen. 



D. conus, Gurlt. 



Fasciola hepatica, Bloch, Jordens, Bosc. 



F. lanceolata, Rudolphi, Moquin-Tandon. 



Planaria latiuscula, Goeze. 



Bicrocoelium 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 Schaflfer 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. DiSTOMA OPHTHALMOBIUM, Diesiug. 



B. ophthalmobium, Diesing, Kiichenmeister, Cobbold, Moquin- 

 Tandon. 



B. oculi-humani, Gescheidt. 



? B. (lentis). Von Ammon. 



Bicrocoelium oculi-humani, Weinland. 



1 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 



