[N.S., XVI, 1920.}] Persistent Oviducts and Abnormal Testes, 295 
the sections. The germ cells in various early stages of develop- 
ment may be seen to be segregated into groups, but curiously 
enough definite crypts and their lumina are conspicuous by 
their absence. The spermatozoa, though fairly well developed, 
are not yet, probably, quite mature. The primitive germ cells 
and early dividing stages of spermatogonia are relatively much 
greater in number than those in the left testis. Another 
peculiar feature is that there are no vasa efferentia in connec- 
tion with this testis. A single branch brings blood to it from 
the first renal artery of the right side. and a single vein 
carries the blood away and joins the first renal vein of its 
side. 
The left testis is of an elongate shape and occupies the 
greater part of the ventral surface of the middle region of the 
left kidney. It is 17 mm. in length and 45 mm. in breadth. 
It shows a distinctly lobular structure. No distinct lumen, 
however, could be found such as may be seen in the testis of a 
normal frog taken at about the same season of the year. The 
CoNCLUSION. 
Summarising the above, it may be said (1) that both the 
oviducts—the left one specially, are smaller in length and 
h less convoluted than the oviducts found in a normal 
supply, and the absence of the vasa efferentia would seem to 
suggest that the testis after reaching a certain stage of 
development has been arrested in its growth and is now 
