REVIEW. 
409 
staken for coccidia, and in fact have been mistaken for them, 
ucocytes have also been described as coccidia by at least 
e author. But the statement that true coccidia are nema- 
Je eggs instead of protozoa is one which we could ignore 
tirely were it not that this interesting and wonderful state- 
};nt comes from one of the most scientific veterinary jour- 
Is published. 
The secret of Willach’s strange results is either that his 
dtures were not pure, but really contained some eggs of 
matodes, or that he really mistook eggs for coccidia. We 
:quently find nematode eggs in the livers of rats and other 
timals at Washington, but a careful examination always eli¬ 
des us to demonstrate their egg nature. Willach compares 
35 division of the coccidia into sporoblasts directly with the 
^mentation of ova ; there is undoubtedly a slight resem- 
ance between the two procedures, but from this point on 
3 development of eggs and coccidia have no resemblance 
. each other, for the sporoblasts of the coccidia give rise to 
ores, and these in turn to sporozoites. Willach would find 
very difficult to give a homology between these later stages 
coccidia and the further development of eggs. He has not 
;empted to explain how forms like* C. bigeminum of dogs, 
C. cruciatum of fish, can be compared with ova. 
The morphology and development of the coccidia has 
en established so well by zoologists that we need not dis- 
ss Willach’s views further.—C. W. S. 
illiet et Moussu. Filaire des boutons h^morragique observ6e chez l’ane (Compt. 
rend. d. 1. Soc. d. Biol. Juin 19, 1892, 6 pp.) 
Authors found that Filar la hcemorrhagica which causes a 
taneous disease, known as blood-sweating, in the horse, is 
I and also in the ass {E quits asinus). The parasite inhabits the 
bcutaneousand intermuscular connective tissue. The male 
rasite, which had not heretofore been observed, was found 
* Several recent authors, including myself, have given Rivolta’s synonym 
■' this species, as Cytospermium mllo&um inteslinalis canis. I take this occa- 
1 1 to correct this to Cytospermium milorum intestinalium canis , which is the 
ae used by Rivolta in 1878. 
