Tetracus, ii. [188]
Tetradactylus, ii. [397]
Tetragonoderus, ii. [490]
Tetragonops, ii. [306]
Tetragonopterus, ii. [445]
Tetragonosoma, ii. [380]
Tetranematichthys, ii. [443]
Tetrao albus, in Italian caverns, i. 161
Tetrao, ii. [339]
Tetraogallus, ii. [339]