PLATE XIV. 
Fig. 1. — Enlarged view of brain and eye of C. spretm in the second pupal stage ; X J A. 
This view of the brain is taken from the same preparation (No. 10) as Fig. 
1, Plate XV. Ccntr. b., the central body, showing the two series of cells in. 
the lower division and the two rows of unicellular bodies in the superior 
division ; oc com. I., oesophageal commissural lobes, with the ball-like masses 
distinctly seen, though this preparation was stained only with picrocar- 
inino, cc. com., oesophageal commissure; opt. nvl., optic nervules; ntina, 
retina with rods and cones beyond, the cornea not shown. 
FlG. 2. — The central body of adult C. sprctus, from section 17, show'ing the inferior and 
superior divisions, the cells in inferior division (inf.) and the two rows of 
unicellular bodies (ce. cell, b.) in the superior division (sup). Magnified 225 
diameters. 
FlG. 3. — The central body of the second or last pupal state, from section No. 10 ; c, cells 
in the fibrous septum between the lower and upper divisions of the central 
body, from section No. 11. X 225 diameters. 
Fig. 4. — Vertical section of the suboesophageal ganglion of the cockroach (Blalla 
orientali*), showing the commissure on the left side. 
Fig. 5. — A section farther behind, showing the back of the ganglion (gang.), seen 
separate from the commissure (com). 
Fig. 6. — A section through the commissure just behind the ganglion. 
All the sections represented on this plate were stained with picrocarmine. 
