Parti-coloured Bat, 45 Pine Marten, 63, Pl. 40 Pipistrelle, 43, Pls. 23, 25 _Plecotus auritus_, 49 Polecat, 73, Pls. 45, 48 Raasay Vole, 113 Rabbit, Bush, 116; " Common R., 113, Pl. 73; " Stub R., 116 _Rana esculenta_, 162; _R. temporaria_, 157 Rat, Alexandrine, 97; " Barn R., 100; " Black R., 95; " British R., 95; " Brown R., 97; " Hairless R., 100; " Hanoverian R., 95; " Irish R., 99; " Roof R., 97; " Tree R., 97; " Water R., 102; " White R., 101 Red Deer, 124, Pls. 76, 80 Red-grey Bat, 39, Pls. 19, 20 _Rhinolophus ferrum-equinum_, 34; _R. hipposideros_, 36 Ringed Snake, 146, Pls. 91A, 91B, 91C, 92A, 92B, 93 Rodentia, 78 Roe Deer, 133, Pls. 81, 83 Running Toad, 170 St. Kilda Field Mouse, 92 Sand Lizard, 140, Pls. 86, 88 _Sciurus cinereus_, 81; _S. vulgaris_, 78 Serotine Bat, 44, Pls. 24, 27 Short-tailed Field Mouse, 105 Shrew, Common, 21, Pls. 9, 11; " Islay S., 25; " Lesser S., 25, Pl. 12; " Water S., 27, Pl. 10 Slow-worm, 142, Pls. 89, 90 Smooth Newt, 176; S. Snake, 152, Pl. 95 Snake, Common, 146; " Grass S., 146; " Ringed S., 146; " Smooth S., 152 _Sorex araneus_, 21; _S. granti_, 25; _S. minutus_, 25 Soricidæ, 13 Spotted Newt, 176 Squirrel, Chipping, 82; " Common S., 78; " Grey S., 81, Pls. 49, 51, 53 Stag, 124 Stoat, 66, Pls. 41, 42 Stub Rabbit, 116 Sweet Marten, 63 Tadpoles, 160 _Talpa europæa_, 13 Talpidæ, 13 _Tamias striatus_, 82 Teeth, 5 Theromorpha, 3 Toad, Common, 165, Pls. 102A, 102B, 103, 105; " Midwife T., 172; " Natterjack T., 170; " Running T., 170, Pls. 104, 105 Tree Frog, 165 _Tropidonotus natrix_, 146 Ungulata, 124 Vertebral Column, Regions of, 4 Vertebrates, 3 _Vespertilio murinus_, 45; _V. pipistrellus_, 43; _V. serotinus_, 44 Viper, 154, Pls. 92A, 92B, 94, 96 _Vipera berus_, 154 Vole, Alston's, 112; " Bank V., 110; " Eigg V., 109; " Field V., 105; " Hebridean V., 108; " Macgillivray's V., 109; " Orkney V., 108; " Raasay V., 113; " Sanday V., 108; " Skomer V., 112; " Water Vole, 102; " Westray V., 108 _Vulpes canis_, 52 Water Rat, 102; W. Vole, 102, Pls. 65, 66 Weasel, 69, Pls. 43, 47 Whiskered Bat, 37, Pls. 16, 18 Wild Cat, 75, Pl. 46 Wild Life, How to observe, 2 Wood Mouse, 89, Pl. 59 Yellow-necked Mouse, 91 End of Project Gutenberg's Animal Life of the British Isles, by Edward Step