No. 2.] PLANOCERA INQUILINA. 197 
bodies are still present in the epidermal epithelium and in little 
nests in the parenchyma. The Biondi-Ehrlich stain proved to 
be very useful in making them conspicuous ; the epidermal 
cells stain a faint rose color, whereas the rhabdites, like the 
- 
ae 
Un veccon ent ceses ety ess 
’ SS aes 
*. eee 
2, eo 
3 re 
Fic. 1. Planocera inguilina, showing on one side the urate-reticulum; 77, 
mouth; pf, pharynx; coe, gut-ramifications; 47, brain; 4, tentacle; ~, uterus 
containing ova; wc, ducts of the uterus uniting to form the egg-duct; QO, ex- 
ternal opening of the egg-duct; g/, shell-gland; sc, seminal canal; vd, vas 
deferens; /, penis. 
yolk-granules in the ova and the droplets in the cytoplasm of 
the intestinal epithelium, take on a deep orange color. 
There are two exsertile and rather pointed tentacles (Fig. I, 
z) on the dorsal surface about one-quarter the length of the 
body from the anterior edge. A collection of eye-spots marks: 
