26 
Transactions Texas Academy of Science. 
covering about one-third of the surface of the entire testicle. The liver 
sends a branch posteriorly which extends a little distance past the 
anterior end of the right testicle. 
The kidneys (K.) measured each 12mm. by 2.5mm. They are not 
divided up into any distinct lobes, but blood vessels cause a large 
notch to be formed near the middle of each. Each kidney (especially 
; on dorsal view) shows itself to be made up of lobules which could 
not be accurately counted, but were estimated to be about seventy- 
five. The kidneys are distinctly separated in front, but connected 
by a bridge about midway of their length and closely applied to 
o 
each other at their posterior ends. The ureters branch out over the 
kidneys. From the study of sections it was determined that about 
twelve branches are given off from each ureter. These twelve pri- 
mary branches by repeated division send branches to every portion 
of the kidney. The ureter joined the spermaduct just before the 
latter opened into the cloaca and, as far as could be determined, had 
a common opening. But it is certain that the two tubes do not join 
until they have almost reached the end of the papilla on which they 
open into the cloaca. 
The spermaducts (Vd.) arise from several collecting tubules which 
can be plainly seen coming out of the dorsal side of the testes. The 
windings of the spermaduct together with the collecting tubules form 
a very narrow cord in the region of the testes. Posterior to the testes 
the spermaduct runs almost straight across the kidneys to its open- 
ing into the cloaca. The length of the spermaduct would not exceed 
3cm. if it were straightened out. It gradually increases in diameter 
as it approaches the cloacal opening. There is a distinct enlargement 
(Sv.) on each spermaduct wdiich could very properly be called a 
seminal vessicle. 
The adrenal (Ad.) was very distinct on the left side, but was not 
found on the right. 
Another form, geographical race, of this same species, but from a 
quite different locality, was compared in order to determine whether 
subspecific anotomical differences w T ould be found. But examination 
showed the two specimens to be practically alike. There were. slight 
differences in the shape of the kidneys and the form of the windings 
of the spermaducts, but no more differences than one would expect 
from an examination of two individuals of the same locality. The 
organs of this form are figured in Fig. 10, PI. III. 
(b) female. (PI. II., Fig. 6.) 
In the female also the urogenital system is very similar to that of 
the genus Holbrookia. The specimen examined measured about 8cm. 
from the tip of the snout to the vent. 
