Coe and Kunkel— California Limbless Lizard. 379 
In the adult female (text-fig. 15) the horizontal partition separating 
the dorsal from the ventral chamber forms a broad shelf and the 
oviduct (od) opens near its free posterior margin, instead of at its 
base as in the embryo. 
Figure 14.—Ideal sagittal section of cloaca of female embryo ; bi, bladder ; 
c.g, cloacal gland ; d.c, dorsal chamber ; h, horizontal partition between cloacal 
chambers ; k, kidney; od, oviduct; p.c, posterior chamber; r, rectum; uw, ure- 
ter; uw’, diverticulum of ureter; v.c, ventral chamber; W.d, Wolffian duct. x14. 
Figure 15.—Ideal sagittal section of cloaca of adult female. Reference letters 
as in preceding figure. x7. . 
The copulatory organs in both sexes are situated in the posterior 
wall of the posterior cloacal chamber, as described below, and well- 
