L. H. Gough 117 
portion of the inter-uterine duct. The eggs come to lie in pockets on 
the lateral side of the paruterine organ. 
The ventral canal is always well developed, often occupying half of 
the dorsoventral width of the medullary layer. The ventral canals of 
both sides are connected by a network of transverse canals, as in 
Stilesia liepatica Wolffhugel. The dorsal canals are less developed, and 
without transverse connections; glandular cells, such as I described 
for Avitellina centripunctata (Riv.), surround the dorsal canal. 
The nerve lies ventral to the genital canals on the pore side, 
ventral to the testes on the non-pore side. 
The great similarity in the general arrangement of Stilesia 
globipiinctata (Riv.) and of Stilesia hepatica Wolff, is veiy easily seen 
by comparing the two diagrams. 
Stilesia hepatica Wolff, does not appear to be known in Egypt; 
Stilesia glohipunctata (Riv.) was certainly never found in any of the 
many sheep I examined in the Transvaal. 
My thanks are due to Prof. W. Garstang of Leeds University, for 
having kindly revised all the proofs of my paper on the “ Revision of 
the Genus Stilesia,” which appeared when I was in Trinidad. This is 
the first opportunity I have had of thanking him publicly for the 
immense amount of trouble it must have involved. 
