INDEX OF SUBJECTS? 



587 



Ocellar markings, 288, 449 



Lepidoptera, 288 ; Raiida-, 

 302; Birds, 449 

 Odontokibis stevensii, extra antennas, 518, 



557 

 Oligochasta, axial duplicity, 563 ; ge- 

 nerative organs, 159; segmentation, 

 156 

 Omnia tophoca rossii, premolars, 237 

 Onitis bison, division of pronotum, 455 

 Operculum, double in Buccinum, 457 

 Ophiacantha anomala, normally 6 arms, 



not known to divide, 433 

 Ophiactis, fission, 433 

 Ophibolus, double monster, 561 

 Ophidia, vertebrae, 103, 123 

 Ophidiaster cribrarius, fission, 433 

 Ophiocoma pumila, young with 6 arms, 



adults with 5 arms, 433 

 Ophiothela isidicola, fission, 433 

 Ophiuroidea, variation in number of arms, 



447; fission, 433 

 Opisthocomus, brachial plexus, 130 

 Orang, vertebra;, 118 ; spinal nerves, 139 ; 

 teeth, 200; extra digit, 349; extra 

 mamma, 188 

 Organic Stability, 36 

 Orthosia Levis, extra wing, 284 

 Oryctes nasicornis, division of pronotum, 



455; extra legs, 512 

 Osmoderma eremita, double (?) leg, 547 

 Otaria cinerea, molars, 240 



jubata, premolars, 240, 243 

 ursina, premolars, 239, 241 

 Otocyon, teeth, 220, 221 

 Oitakaria, teeth, 208 

 Ovaries, variations in number and posi- 

 tion in Earthworms, 160, 162 

 not always correlated with 

 variations in oviducts, 167 

 Ovary, right, developing in Fowl, 466 

 Oviduct, right, case of, in Fowl, 466 

 Oviducts of Astactis, variation in number, 



152; in Earthworms, 167 

 Ox, incisors, 245; molar, 246; poly- 

 dactyhsm, 374-381 ; syndactylism. 

 384-387; syndactylism together with 

 development of digits II or V, 385 ; 

 with duplicity of II and V, 386 ; cer- 

 vical auricles and fistula; unknown, 

 180 



Pachydrilus sphagnetorum, dimorphic in 

 respect of position of generative open- 

 ings, 165, 168 

 Painted Lady butterfly, colour-variation, 



49 

 Palceomis torquatus, colour-variation, 43 

 Palamntvus borneensis, division of poison- 

 spine, 457 

 Palinurus penicillatus, eye developed as 



antenna, 150 

 vulgaris, extra legs, 527 ; extra 

 antenna?, 538 



Palloptera ustulata, abnormal growth 



from thorax. 285 

 Palpi, paired extra, in Insects, 524 



supposed double, 551 

 Pangenesis, 75 

 " Panmixia," 573 

 Papaver nudicaule, colour-variation. 46; 



pigment of, 47, 72 

 Parakeet, colour-variation, 43 

 Pararge megcera, eye-spots, 289, 300 

 " Parhomology," 133 

 Pariah dog, teeth, 221 

 Pamassius, ocelli, 292 

 Parra, feathers, 55 

 Pasimachus punctubitus, double (?) leg, 



547 

 Patella, extra tentacle and eye, 279 

 Pattern, universal presence of, in organ- 

 isms, 19-21 ; difficulties arising from. 

 21 

 Peach, discontinuous variation in, 59 

 Peacock, ocelli, 449 



Peacock butterfly, repetition of eye- 

 spots in, 26 ; variation of, 299 

 Pecora, polydactylism, 373 

 Pecten, double eyes, 280 

 Pedicellaria;, Meristic Vaiiation of, 429 

 Pelamis biculor, imperfect division of 



vertebras, 105; axial duplicity, 561 

 Peleeanus, brachial plexus, 130 

 Pelobates fuscus, extra spiracle, 465 

 Penis, supernumerary, in Hirudo, 166: 



in Aulastoma, 167 

 Pentacrinus mulleri, increase in number 

 of radial joints. 

 4-rayed specimens. 

 dubius, dumorti- 

 eri, jurensis, sub- 

 sulcatus, 436 

 6-rayed specimens, 

 jurensis, 437 

 Pertthina salicella, extra wing, 285 

 Peramelidee, digits of pes, 313 

 Perielueta, variation in number of sper- 

 matheca;, 165 ;forbesi, hilgendorfi, 165 

 Pericrocotus Jiamnieus, colour-variation, 



46 

 Perionyx, generative organs, excavatus, 

 163, 167, 168 

 grunewaldi, 164 

 Peripatus, variation in number of seg- 

 ments, 84, 91, 94 

 Petaurus, premolars, 255 

 Phaxaxgekib;e, incisors, 248; premo- 

 lars, 248—255 

 Plialamjer maculatus, incisors, 248; pre- 

 molars, 253; females spot- 

 ted in Waigiu, 254 

 orientalis, incisors, 248, 250; 



premolars, 250 

 ornatus, first premolar two- 

 rooted as variation, 254 

 ursinus, first premolar nor- 

 mally two-rooted, 254 



