584 



INDEX OF SUBJECTS. 



Hyas, double chela, 540 ; double index, 



541 

 Hybrids, supposed, between Herring and 



Pilchard, '274; supposed, between Tur- 



bot and Brill, 468 ; supposed, in genus 



Terias, 52, 53 

 Hydrobius fuscipes, pronotum having 



three lobes, 454 

 Hylobates, vertebra?, 118; teeth, 204; 



Icuciscus, extra digit, 346 

 Hylotrupes bajulus, extra legs, 494 

 Hypsiprymnus, teeth, 258 



Iceland, 4-horned sheep, 285 

 Ichneumon luctatorius, extra legs, 511 

 Ichueumonida?, extra legs, 491, 511 

 Icticyon venations, teeth, 220 

 Ictony.v, teeth, 233 



Images, relation of, the basis of Symme- 

 try, 19 

 between ujjper and lower jaws, 

 196, 267; between right and 

 left sides, 88 ; in the case of 

 the manus and pes, 404 

 division and union of parts re- 

 lated as, 449 

 princirjles of, followed in the 

 structure and position of parts 

 in Minor Symmetry, 479 

 Iuca Dogs, a bulldog found amongst, 

 57 ; variation of premolars and molars, 

 216, 222 

 Incisors, supernumerary, Gorilla, 203; 

 Ateles, 207; Canidas, 210; 

 Felidffl,222; Herpestida?, 227; 

 Pecora, 245 : Dicotyles, 245 ; 

 Horse, 244 

 division of, Canidae, 210 ; Ele- 



phas, 244 

 absence of, Canidae, 211; Feli- 

 dffi, 222; Herpestidffi, 227; 

 Phocida?, 235 ; Horse, 244 

 Index of crabs and lobsters, vjeculiarity 



in repetition of, 557 

 Individuality, attributed to members of 

 Meristic Series, 31 : such individuality 

 not respected in Variation, 32; cases 

 illustrating the absence of supposed 

 individuality in Members of Meristic 

 Series, 104, 115, 124, 191, 269, 407, 

 433; an unfortunate term, 556 



Jacamaralcyon tridactyla, distinguished 



by absence of hallux, 396 

 Jackal, vertebra-, 122; teeth, 217 

 Japanese pug, probable independent 



origin of, 57 

 Jaws, relation of upper to lower, 196 

 Julodis cequinoctialis, extra legs, 503; 



eloitei, double)?) antenna, 551 

 Julus terrestris, mode of increase in 



number of segments, 93 



Eallima inachys, colour-variation, 53 



Karyokinesis, symmetry in, 20; varia- 

 tions in, 430; bilaterally symmetrical 

 variation of, in the segmentation of 

 an egg, 464 



Kidney, supernumerary, 277 ; horse- 

 shoe, 278, 459 



Kittiwake, variations in hallux, 396 



Laciniation, simultaneous, of petals, 310 



Lady-birds, colour-variation, 49 



Lagorchestes, teeth, 258 



Lagothrix, teeth, 208 



Lamarck's solution of problem of Species, 



4 

 Lamellibranchs, sinistral, 54 

 Lamia te.xtor, double (?) antenna, 551 

 Lurus leucopterus, digits, 393 

 Larva? of Lepidoptera, variations in 



colours of, 304 

 Leaf-butterfly, colour-variation, 53 

 Leeches, variation in generative organs 



of, 165 ; in colours, 304 

 Legs, extra, in Secondary Symmetry, 

 general account, 475, cases in 

 Insects, 483; in Position V, 

 483; in Position VAA, 485; in 

 Position A, 487 ; in Positiou DA, 

 491; in Position D, 494; in 

 Position DP, 496; Position P, 

 498; Position VP, 500. Uncon- 

 formable cases, 503; miscel- 

 laneous cases, 511 ; in Crus- 

 tacea, 526 ; in vertebrates, 554 

 supposed double in Insects, 544 

 Leopard, two cases of dental variation 



in a Chinese, 225, 226 

 Lepidoptera, colour-variation of larvae, 

 304 ; ocellar markings, 288 ; nature of 

 yellow pigments, 73 

 Leptura testacea, double (?) leg, 545 

 Leuciscus dobula, bulldog-headed variety, 



58 

 Lichnantlie vulpina, extra antenna?, 517 

 Ligula, absence of segmentation in, 16S 

 Umax, union of tentacles, 460 

 Limenitis popali, extra wing, 283 

 Limulus, division of caudal spine, 450, 



456 

 Linaria, many symmetrical variations 



of, 76 

 Linckia multiflora, fission, 433 

 Linear Series, Meristic Variation in, 63 ; 

 simultaneity in colour- variations of, 303 

 Lissotriton, supposed double limb, 539 

 Lithobius, number of segments, 93 

 Lithodes arctica, extra legs, 527 

 Littorina nidi*, colour-variation, 49 

 Littorina, sp., extra eye. 280 

 Li.riis angustatus, division of pronotum, 



456 

 Lizards, digital variation in, 395, 396 

 Lobster, colour-variation, 44 ; herma- 

 phrodite, 155; variations in chela?, 

 530—538 



