INDEX OF SUIUKCTS. 



A<-'nitli<i'li-ri:-< iii'iri'-nii*. double I'.'i 1 -. 



548 



Afiiiithuilrilii*, double tail, 50.1 

 Ai;tntlii>tlii/ri.<. double monster, 50ii 

 Acce-sory hoofs of Ox, connected with 



supernumerary dibits. 'Js'i 

 Ai-li,-r<iiitiii atropos, colours of larva.- . Hill. 



305 



Ai-iin'/nix li'/i' llc/ii'i-i , extra legs, 498 

 Actinometra, variation in number of 



radial joint-, PJ1; 4-raved specimen, 



437 ; 0-rayed, 437 



Adaptation, Study of, as a method of 

 problems of species. Id; 

 objection to the metbod, 12: 



-pi ciilat ions as to, avoided, 711; of 



species, approximate only, 11 

 Aiiiiiinniii tuiiiii-iti, double (?) antenna, 



550 



A : /<ilni.< iili'iiiiuxiix, double (?) leg, 5 Is 

 Agestrata </< haanii, extra legs, t'.n 



A'hiiniiH se.rpiiiii-tiitiiiii. double (?) leg, 

 ."17; riiliiiini, double (?) antenna. -V>u 



Aili'ii i-nti Hitliitu, eVtia left's, 512 



A l;i* pniiftntn. double (?) antenna, 551 

 Al'iiix xnrdiilii*, extra legs, 508 

 Aleochara i/i,i.<t<i, extra legs, 488 

 Alliiiitii*. extra appendage, 544 

 AUl<>l'<>i>lt<ir<i. generative organs of, 10(i, 

 1 !',_'. 1 ri,"> ; duplicity of head and tail, 



."it;.")-. ii.<.i,"n-n.-iin, spermathecas, Hi.") 

 Alliirnn, generative organs of. Kit. Iti". ; 

 ria. 1G5 ; heri'i/niii*, tctr/ii ilrn.<, KJ4 

 , vertebrae, 127; axial dnplicitv. 



561 

 Aiiil>liiiii'iixti'ii, 4 -rayed, 443; 6-rayed, 



llii; partial reduction of a ray, 443; 



partial duplicity of a ray. 4 Hi 

 Aiiintiifii'tca, alleged case of eight pairs 



of gill-openings, 174 

 Ampi'iln* i'j>/iii>/'itiin. double (?) antenna, 



551 

 Amiiliifi/fliiK (Holothurian), tentacles 



not in multiples of five. 435 

 Aiiijiliiiiuilln.i milntitiiili*, extra autenn.-i . 



.") 1 .") 

 . I nijiliia.riix, number of gill-slits, 174 



rri'iixi*, colour-variation, 44 

 '/iifrqiii'tliilii. division of digits. li'.i-J 

 A ii '-li< mi i mi* ti'.i'jm n<-t<i t nx, extra antenna . 



.">_':: double (?) antenna, //(//<cx. nn- 



ilii.-itirnlli*, ")">() 



Angora breeds. 55 



Ani.i/ili<i tltiricaln division of epistotne, 

 454 



Annelids, segmentation compared with 

 that of Chordata, Hi; : imperfect seg- 

 mentation, 15(5; spiral segmentation, 



1">7 : variation in generative organs, 

 l.V.i: axial duplicity, "'ii3 

 Anomala junii, extra autenn-e. ."]."> 

 A >i. or. spinal nerves, 130, 133 

 Antcdoii, variation in number of radial 

 joints, 421; 4-rayed specimen, 43(1: 

 6-ruyed sjiecimen. 137; abnormal 

 1'iaiicliin;/. 438 



Antenna de\ eloped as foot. 140, 147 

 Antenna^, variation in number of joints. 

 Prionidse, 411 ; Pnli/iirthnix, 

 412; Lytij'lili-lni*. 412; 

 Domifin, 413; Forjlcnln, 

 413 



extra, in Secondary Symmetry. 

 513-522 : symmetry un- 

 known. 522; arising from 

 head, 551 



supposed double, 548 

 Anthia, extra legs, 502 

 Anthocharis cardamines, colour-varia- 

 tion. 4"> 



eu]ilii-ii<>. 4."> ; imii', 72 

 Anthropoid Apes, Variation in Verte- 

 bra , 110; teeth. 199; digits, 349 

 Aphuiliitu, extra legs, 494 

 Api* iiii'll(ii<-ii. union of compound eyes, 



461 

 Appendages, joints of, 410 



supernumerary, arrange- 

 ment of evidence, 474 

 in Secondary Symmetry. 

 475; mechanical model 

 illustrating relations, 

 480; duplicity of, 400, 539 

 'nj.r, brachial plexus, 130 

 na, extra tlabellum, 530 



t/siii-tn*. extra digits. 393 

 I<I;IIIJIHX. extra digit, 392 

 Ar<-tiii. colour-variation, 40 

 A >':-t<irrj>li<ilux aiixtrulix molars, 243 

 AI-<II' jiln ruxn, eye-spots, 295 

 Arinn, sinistral. 54 



Arniitin niiixi-lintii, extra legs, 485, 503, 

 512 ; double (?) antenna, 3 cases. ">.">! 

 Artt'inin, tulinii and inilfiititxi'iiii. 96; 

 iii'ni'ilix, 100; relation to Jlniiii-lii/'iix. 

 90 ; segmentation of abdomen, 100 

 Arteries, renal, 277; in a case of double- 

 hand. 333 



Ai-tliroiitniKiltix. number of segments, 94 

 Arthropoda, variation in number of 

 segments, 87; Homo-osis in append- 

 ages, llti; axial duplicity, 565 

 Articular processes, change from dorsal 

 to lumbar type, 109; variations in 

 position of change, 110, 112, 114, 117, 

 122 



