INDEX 



Every reference is to the page : words in italics are names of genera or species ; figures 

 in italics indicate that the reference relates to systematic position ; figures in thick 

 type refer to an illustration ; f. = and in following page or pages ; n. = note. 



Aljdominal armour, of Cricotus, 2S7 ; of 



Microsauri, 289 ; of Prosauri, 290 

 Abdominal ribs, of Ehynchooephali, 292, 



298; of Diuosauria, 414; of Alegalo- 



sct'UTus, 421 

 Aberrant scaling of Lacertilia, 495 

 AUepharus, 560 ; eyelids, 494 

 Acanthodactylus mtlgaris, 559 

 AcantJwphis antarcticiis, 635 

 Acentrous vertebrae, i.e. those without a 



centrum or hody, 4 

 Acris, 186, 189; A. gryllus, S07 f. 

 Acrochordinae, 606 

 Acrochcrrdus javanicus, 607 

 Acteosaurtcs, 4S9 

 Actinodon, S3; 287, 288 

 Adams, visit to the Mugger-peer, 455 f. 

 Adaptive characters of Anura, 142 

 Adhesive apparatus, of tadpoles, 57, 57 ; 



of Tree-frogs, 187; of Thoropa, 209; 



of finger -discs of Eaninae, 239 ; of 



Geckos, 506, 505 

 Aelurosaurus, 307 



Aestivation, of Crocodiles, 457 ; of Tor- 

 toises, 357, 365, 404 

 Aetosaurus, 432 ; Ae. ferratus, 433, 448 

 Agalychnis, 189, W6 

 Agama, 5^0; A. saTiguinolenta, 520 ; A. 



stellio, 5S1, 521 

 Agamidae, 513, 515 f. 

 Agamura, tail, 506 

 Agassiz, on habits of Alligator Turtle, 341 ; 



of Trionyx, 407 

 Age of Chelonia, how to estimate, 326 ; 



great age attained by Tortoises, 369, 376, 



377 ; see also Growth, rate of 

 Aglossa, 139, I4O, I4S f. ; distribution, 



143 

 Aglypha, 592, 606 t. 

 AhaMvlla s. Leptophis, 618, 619 

 Aistopodes, 81 



Aldabra, gigantic tortoises of, 373 f., 375 

 Algae, destructive to shell of tortoises, 357 

 AUantois, an embryonic outgrowth from 



the posterior part of the gut, acting as 



a respiratory organ, 278 

 Alligator, 450, 466 f. ; A. mississip- 



piensis, 4^7 f. ; skull, 468 ; nesting, 



469 ; A. sinensis, 471 

 Alligator Turtle, 340 

 Allopleuron hofmanni, 380 

 Allosaurus, 4^^ 



Alpine, Newt, 1^6 ; Salamander, 119 

 Altitude, high, in which Anura have been 



found, 181 

 Alytes, 157 f. ; A. cislernasi, 160; A. 



obstetricans, 158 ; urino-genital organs, 



49 

 Amblycephalidae, 593, 593, 637 

 Aviblycephalus mooUicola, 637 

 Amblyrhynchus, 528 ; A. cristattis, 533 

 AmUystmna, skiiU, 17, 94, 96, 109, 110 i., 



112 ; A. jejfersonianum. 111 ; A . ma- 



vortium, 115 ; A. opacum, 110 ; A. pier - 



simile. 111; A. pninctatuin, 110 ; A. 



talpoidenm, 110 ; A. tigrimim, 111 I ; 



metamorphosis of, 112 f. 

 Amblystomatinae, 102, 109 

 Ameiva, 549 

 Amnion, a membrane round the embryo, 



278 

 Aniphibia, 3 f. ; definition, 5 ; systematic 



position, 5 ; numbers of species, 4 

 Amphicondylous, i.e. the occipital part of 



the skull articulates with the neck by a 



right and a left knob, 4 

 Amphignathodon, 185 ; A. guentheri, 188 

 Amphignathodontinae, 139, 188 

 Amphishaena, 566 ; A.fnliginosa, 566 

 Amphisbaenidae, 514^ 565 f. 

 Amphiuma, 88, 96 ; A. means s. tridactyla, 



100, 101 



