Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Jeli 
Fig. 
Fig, 
Fig. 
Fig. 
Fig. 
fe cent 
NOTES ON THE STRUCTURE OF OIKOPLEURA. 55 
a See 
Ne 
SG ot OR oe 
PuateE II. 
Section 81, showing cardiac and pyloric sacs of 
stomach, &c. 
Section 95, showing junction of lobes of testis. 
Section 108, showing intestine leaving stomach. 
Section 113, showing diverticulum of rectum, &c. 
Section 125, showing branchial sac, heart, &c. 
Section Sarl aden the narrow opening of the 
Section 151,) intestine into the rectum. 
PratTe ITI. 
Section 155, showing the beginning of the tail. 
Section, 163, showing the anterior end of the 
stomach, 
Section 165, 
Section 167,| showing the structure of the stig- 
Section 169,{ mata. 
Section 1838, 
Section 190, showing the branchial sac in front 
of the stigmata. 
Section 216, showing the large lateral ectoderm 
cells. 
Part of tail from last section more highly mag- 
nified (x 600). 
Kctoderm cells from about section 200, highly 
magnified. 
PrAare LV. 
Section 228, 
Section 225, 
Section 228, 
Section 248, showing anterior cecal part of 
endostyle, &c. 
showing the relation of the endo- 
style to the branchial sac. 
