Rissoa, ii. [510]
Rita, ii. [442]
River-hog, of West Africa, figure of, i. 264
of Madagascar, figure of, i. 278
Rivers, limiting the range of mammalia, i. 12
limiting the range of birds, i. 17
River-scene in West Africa, i. 264
River-snails, ii. [510]
Rivulus, ii. [450]
Rock-snakes, ii. [381]