549 
Translations and Reviews of Continental 
Veterinary Journals. 
By W. Ernes, M.R.C.V.S., London. 
Journal cles Veterinaires du Midi, February, 1862. 
COMPARATIVE OBSERVATIONS ON THE CHARACTER AND 
ORGANIZATION OE THE DACHMIUS TRIGONOCEPHALUS , 
DUJARDIN. — A WORM FOUND IN THE VESSELS AND 
HEART OF THE DOG. 
By M. C. Baillet, Professor at the Imperial Veterinary School of 
Toulouse. 
In a note, published in 1854, on an observation by 
M. Serres, the author says, we classed with the Bachmius 
trigonocephalus, Duj., nematoid worms found by our col¬ 
league in the pulmonary artery, the right ventricle, and the 
right auricle of the heart of a dog. We have since had 
opportunities of studying de novo and more completely these 
parasites, and of comparing them with the Bachmius trigono - 
cephalus of the intestines, and it was easy to perceive that they 
were far from being of the same species as the latter. But if 
we have been able to separate them accurately from the nema- 
toids with which we had at first confounded them, on the 
authority of a passage in the excellent treatise of M. Dujardin, 
it has not been so readily done when we have tried to class 
them with one of the species which have been designated 
till now as inhabiting the different organs of the dog. We have 
been, therefore, induced to consider them as constituting a 
species which has not yet been described, or, at least, not dis¬ 
tinctly, by the authors whom we have consulted. For this 
reason we propose to study in this note, comparatively, the 
Bachmius trigonocephalus with the worm that is found in the 
pulmonary vessels of the dog, and examine them successively 
in their external conformation, their digestive apparatus, and 
their organs of reproduction. 
External conformation —The Bachmius trigonocephalus has a 
thin, white, cylindrical body, slightly tapering at each end, 
with a little fulness in the middle. The head, which is of 
the size of *08mm. to TOmm., is a little on one side, obliquely 
truncated, and provided with three transparent lobes, which 
are in reality only visible when examined in front. The 
integument is marked by transverse strise, which are '003mm. 
to '004mm. apart. The worm of the vessels of the heart has 
