PLATE XLII. 



PAGE. 



Fig. 1. PUuroptyx clavatus. Small iBdhidual. j^atural size 370 



2. Gcraterpeton tenuicorne. Cranium from above. Natural size 372 



4. Tliyrsidium fasciculare. Type. Natural size 365 



4. Peplorhina anthracina Adislocated cranium from below ; above are brokou vomerine teeth ; 



behind, separated cranial bones; to the right of the rqiddle is operculum. Natural size. .. 410 



5, 6. Superior cranial bones of Peplorhina anthracina 410 



