Retropinna, ii. [447]
Revillagigedo Islands, zoology of, ii. [60]
Rhabdornis, ii. [265]
Rhabdosoma, ii. [374]
RACHIODONTIDÆ, ii. [377]
Rhacophorus, ii. [419]
Rhamnophis, ii. [376]
RHAMPHASTIDÆ, ii. [306]
Rhamphastos, ii. [307]
Rhamphichthys, ii. [455]