584 



INDEX OF SUBJECTS. 



Ilijn*, double chela, 540; double iudex, 



541 

 Ihl'rids, supposed, bet vv eeii Herring and 



rilchard, 27 t ; supposed, between Tur- 



liot and Hull, HIS; supposed, in genus 

 I'l-rins. 52, 53 



Jfii'lrnliiiis niti-i/H's, pronotum having 



three lobes, 454 

 ]I>/lnl,iit<:-i, vertebne, lls : teeth, 204; 



/. ni-iti-Hx, extra digit, H46 

 II i/Iotrupe>> h'ljnliit!, extra legs, 494 

 x, teeth, 258 



Iceland, 4-horned sheep, 285 



Irlinciintoit liictiituriii.--. extra legs, 511 



Ichoenmonidae, extra leu--. till, 511 



Ii-tiojun ri-iuitii-'i*, tei-tli, 22u 



Ictonyx, teeth, 23:; 



Images, relation of, the basis of Symme- 



try, l<) 



between upper and lower jaws, 



1%, 207; between right and 



left sides, 88 ; in the case of 



the manus and pes, 404 



division and union of parts re- 



lated as, 44'.i 



principles of, followed in the 

 structure and position of parts 

 in Minor Symmetry, 479 

 Inca Dogs, a bulldog found amongst, 

 57 : \aiiatiun of premolars and molars, 

 216, 222 



Incisors, supernumerary, Gorilla, 203; 

 Atelt-a, 2u7- Canidas, 210; 

 Felidje.222; Herpestidte, 227; 

 Pecora, 245; Dicntt/lcx, 245; 

 Horse, 244 

 division of, Canidae, 210; Ele- 



j>lid.<, 244 



absence of, Canidas, 211 ; Feli- 

 dffi, 222; Herpestidae, 227; 

 Phocidse, 235 : Horse, 244 

 Index of crabs and lobsters, peculiarity 



in repetition of, 557 



Individuality, attributed to members of 

 M eristic Series, 31: such individuality 

 not respected in Variation, 82 ; cases 

 illustrating the absence of supposed 

 individuality in Members of Meristic 

 Srrk-s, 104,' 115, 124, 191, 269, 407, 

 433; an unfortunate term, 550 



J,if>iiiiiir<il<-i/<>ii triildcti/In, distinguished 



by absence of hallux, 390 

 Jackal, vertebra', 122; teeth, 217 

 Japanese pug, probable independent 



nrigin of, ."i7 



Jaws, relation of upper to lower, 190 

 Jiilnilis cequinoctialis, extra leg>, 503; 



cloud, double (?) antenna, 551 

 C/H/MX trrrextris, mode of increase in 



number of segments, 93 



Kallinui inucliys, colour- variation, 53 



Kuryoxinesis, symmetry in, 20; varia- 

 tions in, 430; bilaterally symmetrical 

 variation of, in the segmentation of 

 an e;.'i- r , 4i',4 



Kidney, supernumerary, 277 ; horse- 

 shoe, 27 s . 1 59 



Kittiwake, variations in hallux, 396 



Laciuiation, simultaneous, of petals, 310 



Lady-birds, colour-variation, J'.i 



I.'Kjon-lirftt't, teeth. 25s 



L'i : it>t)iri.r, teeth, 208 



Lamarck's -ohition of problem of Species, 



4 



Lamellibranchs, sinistral, 54 

 Latnin fi'.rtur, double (?) antenna, 551 

 Liirtix Ictifiijiti-rii*, digit-, 393 

 Larvae of Lepidoptera, variations in 



colours of, 304 



Leaf-butterfly, colour-variation, 53 

 Leeches, variation in generative organs 



of, 105; in colours, 3<>4 

 Legs, extra, in Secondary Symmetry, 

 general account. 475, cases in 

 Insects, 483; in Position V, 

 4S3; in Position VA A, 4s5: in 

 Position A, 4S7 ; in Position DA, 

 491; in Position D, 494; in 

 Position DP, 496; Position P, 

 498; Position YP, 500. Uncon- 

 formable cases, 503; miscel- 

 laneous cases, 511; in Crus- 

 tacea, 520 : in vertebrates, 554 

 supposed double in Insects, 544 

 Leopard, two cases of dental variation 



in a Chinese, 225. 220 

 Lepidoptera, colour-variation of larvae, 

 304 ; ocellar markings, 288 ; nature of 

 yellow pigments, 73 

 Leptnni t<'*tin-fti, double (?) leg, 545 

 Li-iici.icii.< (hibitla, bulldog-headed variety, 



58 



Lichiuinthe nilpina, extra antennae, 517 

 Liyula, absence of segmentation in, 10s 

 Limax, union of tentacles, 400 

 Liiiti'uitix iKijntli, extra wing, 283 

 Limiting, division of caudal spine, 450, 



450 

 Linttria, many symmetrical variations 



of, 70 



Line kid mitltijlnrn, fission, 433 

 Linear Series, Meristic Variation in, 03; 

 simultaneity in colour- variations of, 303 

 I.ix.-iutriton, supposed double limb, 539 

 LitlmbiitK, number of segments, 93 

 I, it IK nit:* urcticti. extra legs, 527 

 l.itturiiin nulia. colour- variation, 49 

 l.itturiiid, sp., extra eye, 280 

 Li.riiK ti>i<ni*t<itiix, division of prouoturn, 



156 



Lixards, digital variation in, 395, 396 

 Lobster, colour-variation, 44 ; herma- 

 phrodite, 155; variations in chelje, 

 530538 



