ANALYTICAL INDEX 



47.1 



Characters ; essential to Lamarck's 

 theory, 99; forms of teeth and, 114, 

 115 ; forms of joints and, 112, 114, 

 115; the germ-plasm and, 131-2 ; 

 discussed and rejected by J. C. 

 Prichard (1826), 177-84 ; required by 

 the interpretation of mimicry by the 

 theory of external causes, 267. 



Transmutation of species, Huxley's 

 belief in (1859), 195 ; older beliefs in, 

 54-6. 



Transparency, attained in diverse 

 ways in Lepidoptera, 263-6 ; by loss 

 of scales in mimetic moths, 251, 276, 

 365 ; by transparency of scales, 251, 

 266, 366 ; in oceanic forms, 29S. 



Tree-shrews mimicking squirrels, 

 3675 367 n. I ; distasteful qualities of, 

 367 n. I. 



Trees, fossil, as evidence of uni- 

 formity of conditions, 18, 19. 



Trepsichrois inulciber, 372, 376. 



Trias, appearance of Limulus in, 40. 



tridens, Acro7iycta^ uniformity in 

 broods of, 87 n. i. 



Trilobites among the earliest 

 fossils, 5, 30 ; preserved with anten- 

 nae, 17, 39; ancestral position of, 

 3^) 39 j dominance of, in oldest 

 rocks, 39 ; rapid decline of, 41. 



Trimen, Roland, on recent changes 

 in the distribution of African butter- 

 flies, 52 n. I ; discovery of mimetic 

 females of Pap. da7'danus by, 57, 

 57 n. I ; on dorippus f. of Z. chrys- 

 ippus in wS. Africa, 71 n. i ; on 

 preferential mating of African butter- 

 flies, 86-7 ; on seasonal forms of 

 Hypanis {Byblid) acheloia^ Sy ; on 

 tropical biological stations, 89, 89 n. i, 

 90 ; on African mimicry, 222 ; on 

 African Miillerian mimicry, 223 n. 6 ; 

 on Miillerian mimicry of Aletis^ &.C., 

 for L. chrysippus, 232 ; description of 

 planemoides female f. of Pap. da?-- 

 da?tus by, 374 n. 3. 



trinie?ii, a primiti\e female f. of 

 the Papilio dai'danus group, 374, 

 375 ; roughly mimicking Aniauris 

 niai'ius i. dojfii?itca?iiis, 374 n. 2 : 

 see also da7'daiuis. 



Trincomalie, Ceylon, dorippus f. 

 of L. chrysippiis at, 70 n. 2. 



Tring Zoological Museum, re- 

 searches on geographical distribution 

 at, xvi ; specimens of L. chrysippits 

 in, 321 n. I. 



Trinidad, examples of mimicry in, 

 235 ; colour of the chief Ithomiine- 

 centred combination in, 350; char- 

 acter of under surface of mimetic 

 P7otogomus in, 351. 



tri7iodosicSy Hete)07iotus^ mimicry 

 of ant by, 258 (Fig. 6), 259. 



Tristram, Canon H. B., on colours 

 of desert animals (1859), 195, 196. 



Triton, see newt, 130. 



Trochammina, an existing genus 

 in the Permian, 27. 



TrocJiiliiun (see also Scsia) : 

 method of attaining transparency in 

 mimicry of wasps by, 251, 365, 366. 



Trothiliioji (Sesia) apifor/tie, 365 ; 

 — crabro7iifor77ic {bc7nb€cifo7)uc), 366. 



t7-opho7iius^ a female f. of the 

 Papilio da}da7ius group, mimicking 

 Li77i7ias tJuysippits, 374, 374 n. i ; 

 bred from female forms t7opho7iius 

 and hippocooTi, 72 n. i : see also 

 darda7ius. 



Tropical America : see America, 

 Central and South. 



Tropics, change of fleece in, 190. 



Tryphae7ia^ value of bright hind 

 wings of, 303, 304. 



Tryp]iae7ia p7-07U(ba. 314 n. 2, 



Tschermak, rediscovery of Mendel's 

 principle by, xxix. 



Tse-tse fly, limit imposed on higher 

 animals by, 100. 



tngeia, Precis^ under side procryp- 

 tic in both wet and dry seasons, 340 ; 

 S. African habitat of, 340. 



Tunicates, uncertain ancestry of, 

 26. 



* Tussocks ', fine branched hairs of, 

 325 ; defence afibrded by, 325, 326. 



Tutt, J. W., on darkening of N. 

 moths, 309, 309 n. i. 



Twins, see ' identical ' twins. 



Twins with diflerences greater than 

 between ordinary brothers and sisters, 



135- 



Twigs, protective (procryptic) re- 

 semblance to, 298, 299 : procr>ptic 

 resemblance to swaying, 360. 



Tylor, Professor E. B., on origin 

 of implements, 109; lite of J. C. 

 Prichard by, 173. 



typhle, Sip/tonosio/na, concealed 

 among leaves of Zostcra in shallow 

 water, 29S, 299. 



tytia^ Cadut;,!, mimicked by Pap. 

 age' si or, 371. 



