ON THE ANASPIDACEA, LIVING AND FOSSIL. 507 
The mandible of Koonunga (text-fig. 11) possesses a 
toothed ridge and a single lobe beneath it bearing short 
Trxt-Fric. 11. 
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ane a 
Koonunga cursor. Mandible. 
spines and a few small papille. Sayce regards this lower 
lobe as the molar surface, the spine row being, according to 
Text-Fic. 12. 
Pe ce 
(ey id 
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S TaN = 
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i wae 
12. 
Anaspides tasmanie. First maxilla. 
him, absent, but since the molar surface is not normally 
furnished with sete in this manner, it seems better to regard 
