Index 



Rana sphenocephala, 20, 48 186-188. 



syivatica, 3, 4, 18, 26, 38, 49, 205-211, 

 208-210 (development), 208-209 

 (voice), 211 (colour change). 

 virescens, see pipiens. 

 virescens bracliyccphala, see pipiens. 

 virescens splienccephala, see sphenoce- 

 phala. 

 virgaiipes, 20, 26, 38, 50, 222-224. 

 Ranid^, 8, II, 26, 43, 48, 171-240. 

 Regeneration, 18, 236. 



Respiration of adult, 70, 76, 231, 233, 237. 

 of tadpole, 5, 8, 14, 68-69, 70, 179-181, 

 236, 237. 

 Rocky Mountain Toad, see Bujo 1. wood- 

 housei. 



Salamanders, see Urodela. 

 Salientia, animal behaviour, 27-35. 



Classification, 7. 



Colour of, 22-27. 



Development and metamorphosis, 

 3-7- . 



Distribution, 35-42. 



Hibernation, 15-16. 



Phylogeny, 13. 



Poison, 16-18. 



Regeneration, 18. 



Songs of, 18-22. 

 Salt-marsh Frog, see Rana pipiens. 

 Scaphiopns conchii, 41, 44, 57-59. 



hammondii, 41, 44, 59-60. 



h. bombifrons, 40, 44, 61-62. 



holbrookii, 4, 38, 43. S3-S7i SS (call), 

 55-56 (life history). 

 Screaming Frog, 198 (see Rana clamiians). 

 Skeletons of Batrachia, i. 



of Fishes, i. 



of Reptiles, 2. 



of Salientia, 2. 



of Urodela, 2. 

 Skin absorption of water, 78, 90. 

 Smilisca baudinii, 27, 40, 46, 151-153. 

 Snakes, 72. 



Sonoran Subregion, 39. 

 Southern Bullfrog, see Rana grylio. 

 Southern Leopard Frog, see Rana sphenoce- 

 phala. 

 Southern Spadefoot, see Scaphiopus couchii. 

 Southern Toad, see Bufo lentiginosus. 

 Southern Tree Frog, see Hyla squirella. 

 Spadefoot of the Western Plains, see Scaphio- 

 pus h. bombifrons. 

 Spadefoot Toads, see Pelobatidce. 

 Spea, see Scaphiopus. 

 Special senses, hearing, 30, 32. 



lateral line, 6. 



Special senses, sight, 30, 32. 



touch, 28, 29, 34. 



taste, 28, 90. 

 Spring Frog, see Rana clamitans. 

 Spring Peeper, see Hyla pickeringii. 

 Statistics on food of toad, 83-86. 

 Stegocephali, 12, 13. 



Stejneger, Dr. Leonhard, 52, in, 157. 

 Striped Frog, see Rana virgatipes. 

 "Suckers," 68, 179. 



Swamp Tree Frog, see Chorophilus nigritus. 

 Syrrophus marnockii, 39, 40, 45, 165. 



Tadpole, development, 67-71, 176-181. 



enemies of, 146, 181-183. 



food of, 6g, 210, 235. 



lateral line sense organs, 6. 



metamorphosis, 5-6, 69-70, 235-238. 



mouth structure, 69, 181, 235. 



regeneration of tail, 18, 236. 



respiration, 5, 8, 14, 68-69, 7°. i79~ 

 181, 236, 237. 



suckers, 68, 179. 

 Tailless Batrachia, see Salientia. 

 Temperature, 4, 6, 15-16, 23, 28, 33. 

 Tongue of Toad, 81 (Fig.89). 

 Toads, see Bufonid^. 

 Tree Frogs, see Hylid.^. 

 Tree Toad, see Hyla versicolor. 

 Triton, 2. 



Urodela, 2, 5, 13, 147, 209. 



Vocal Pouches, External, 19, 75, 95, 101, 

 103, 172, 188, 195. 



Vocal Sacs, 19, 75, 233. 



Voice among Salientia, 18-22 (general), 

 95-96 (S. fowleri), 64, 66, 75, (B. 

 americanus), 91 {B. lentiginosus), loi 

 (S. cognatus), 103 {B. compactilis), 

 105 (B. quercicus), iiqiH. versicolor), 

 123 (H. arenicolor), 128 (H. cinerea), 

 130 (H.evittata), 133 {H. andersonii), 

 13S (H. regilla), 139-143 {H. picker- 

 ingii), 155 (.Acris), 164 (Lithodytes), 

 167 (Engystoma), 173 (/?. pipiens), 

 189 (R. palustris), 198-200 {R. clami- 

 tans), 209 (i?. syivatica), 232 (i?. 

 catesbiana). 



Warts, 18, 80. 

 Water Dog, 2. 



Western Frog, see Rana preiiosa. 

 Western Spadefoot, see Scaphiopus ham- 

 mondii. 

 Wood Frog, see Rana syivatica. 



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