354 
Plate XXIV 
Pig- I- —“ Slender ” form. 
Fig. 2.—“Slender” form. 
Fig. 3.—“ Broad ” form. 
Fig. 4.—“ Broad ” form. 
Fig. 5.—“ Stumpy ” form. 
Fig. 6. Stumpy form ; evidently degenerated but reproduced to 
show structure of blepharoplast and nuclear granules. 
