Lang, 011 metamorphosis of seventeen- 

 year Cicada, 698; on origin of coxal 

 from setiparous glands, 444 ; on Peri- 

 patus, 9; on relation of myriopods to 

 insects, 17 : on segmented structure of 

 arthropods, 32 ; on respiratory system, 

 490. 



Langley, on the light of tlie tirerty, 426. 



Larva, defined, 599; Cam pt idea-form, or 

 campodeofd, 600; growtli of, 608; vo- 

 racity of, 608; cruciform, 705. 



LarviK, apodous, 103, 653. 



Larval insects, tracheal gills of, 466; 

 stage, 593. 



Latreille, on the median segment, 163; 

 metamorphism, 597 ; on the term pupa, 

 626. 



Latzel, on coxal sacs, 14. 



Layer, superficial protoplasmic, of egg, 

 524, 526; germ, formation of, 558. 



Leach, on ametahola, etc., 5!>ii. 



Leaping power, 219. 



Legs, abdominal, of lepidopterous larvae, 

 and larval sawflies, are they true legs ? 

 552 ; atrophy of, 102 ; mechanism of, 

 104 ; movements of, 105 ; muscles of, 

 215; post-embryonic development of, 

 653, 654 : pulsatile organs in, 405. 



Lehrman, on organs of smell, 2<>5. 



Leidy, on foetid glands, 373. 



Lens, crystalline, 250, 251. 



Lendenfeld on flight, 149, 151, 159. 



Le'on, on labial palpi of Hemiptera, 68 ; 

 tongue of Hemiptera, 73. 



Lepidoptera, embryology of, 537: eversi- 

 ble sacs of, 375 : maxilla- of, 65, 67 ; 

 number of moults in, 616, 617; origin 

 of legs of imago, 654 ; paired oviducts, 

 492: pup;i- of, 628; testes of, 493, 495. 



Lepisma. 52: doable sexual openings in, 

 486. 



Leptiform larvae, (KK). 



Leptis, thorax of, 91. 



Leucarctia, 391. 



Leucine. 352. 



Leucocytes, 407, 421, 650, 678, 680, 685; 

 size of, 407. 



Leucopis, 113, 517. 



Leydig, on colors, 202, 204: on nerve-end 

 apparatus in the wing, 153; on organs 

 of smell, 266; on trachem, 432. 



l.il.cllula, 463. 



Life, embryonic, length of, 582. 



Light of the firefly, 426; its use, 428. 



Ligula, 68. 



Limacodes scapha, 606. 



Limbs, homologie^ of, 39; mechanical 

 origin of, 34, 35 ; lost, reproduction of, 

 619; result of disuse of, 101. 



Limnephilua padictu), 46 ; maxilla of , 65. 



Limulus, ."). 



Lina, 374, 545, 546. 



Lingua, 68, 70. 



Lip, under, 68. 



Lipochrome, 206. 



Liponeura, 475. 



Lithocolletis, 618; its cocoon-cutter, 634. 



Litognatha nubilifasciata, 102. 



Lobe, axillary, 124; infra-anal, 183. 



Lobes, (BSOphageal, 237; antenna!, 237; 

 head, 514; procephalic, 544, 548; pro- 

 cerebral. '-.">2. 



Lobulus, 124. 



Locomotion, 103; on smooth surfaces, 

 111. 



Locust, air-sacs of, 4'_'4, 45(i : brain of, 231 ; 

 caecal appendages of, 347 ; digestive ca- 

 nal of, 298 ; ear of, 288 ; head-segments 

 of, 54(5 ; mode of breathing, 451 : hatch- 

 ing, 583 : moulting of, 609 ; nervous sys- 

 tem of, 223: number of stages of, 595 : 

 number of moults of, 616 ; olfactory 

 organs of, 272; oviposition of. 520; 

 rectal glands of, 318; reproductive 

 organs of, 488, 489. 



Locusta viridissima, rectal glands of, 

 318. 



Locy, on pulsatile organs in legs of Xepi- 

 dae, 405. 



Lonchodes, 521 . 



Loop of wing, 122. 



Lophyrus, 59. 



Lora, 6S. 



Lubbock, on color sense, 261; on vision, 

 256-258; on distribution of trachea?, 

 433. 



Lncanus, 59, 620: thorax of. 94: damn, 

 nervous system nf. - _''_'5. 



Lucas, on segmcntal arrangement of 

 salivary glands, .'i.">7. 



Luciola,424, 427,451.. 



Luna moth, its mode of escape from its 

 cocoon, 635. 



Lutz, on blood, 275. 



Lyca-na, 381. 



Lymph, 206. 



Lyonet, on the imaginal buds. 656: on 

 wing-germs, 128. 



