Fig. 2. — Ariicola ampliihius Linnaeus. 



Dorsal views of skulls in different stages of growth (continued). Condylo- 



hasal length, Stage IV, 37-8 mm., «t. V, 40-6 mm., St. VI, 44-3 mm. 



orbital crests, and gradual approximation of the squamosals on the fore-part 

 of the braincase. Other changes in the rostrum, zygomata, interparietal 

 and occiput are also shown. 



