286 



me:\ioies of the national academy oe sciences. 



Horns of caterpillars, origin of llieir jioaition. 



Horn, caudal 



Humps, origin of 



Hyphantria tester, origin of markings of 



Ichneuraons, featurea deterrent to 



Ichthyurinii 



Page. 



22 



21.20 



20 



16 



170 



35 



Imaginal cbai'acters, inheritance of 33, 34 



Incongruence between larval and adult characters of Notodon- 



tians 27.20 



Inheritance at corresponding periods of life 8. 38 



Insects, metamorphic, genealogy of 56 



why so numerous in species and individuals 19 



Isolation 19 



Jugatai - 57 



Lamarckism 20,24 



Lamina supraanalis '-5 



Larva, campodca form 13 



eruciform 13 



generalized 8, 9 



primitive 14 



Larval characters ^ 



inheritance of 33, 35 



Lasiocampidse, geographical distribution of 45 



Leaf, dead or brown portion of, protective resemblance of Noto- 



dontian larva* to 201.202,205,207 



Lepidaptera, classification of 51, 56 



genealogical tree of 83 



haustellata 61 



inheritance of acquired characters in 33, 36 



laciniata 58,61 



phylogeny of 51,56 



primit i vo features of 53, 58 



stem forma of 54, 55 



venation of 84 



Limacodes, origin of their larval forma 19 



Lines, origin of 15 



Lithacodia fasciola, ontogeny of l-i 



Lithosia, the ancestor of Bombyces 32 



Lobe, infraanal 26 



Macrurocampa, tiagellum of 24 



Mandibles, veatigial, in Tineids, etc --• 18,55.59,283 



Markings, bright 180,181,215 



mimetic 201,207 



origin of 7,11,15,16 



of wings ^i^-i 



ilasillce. vestigial 34 



Medium, direct action of 16 



Megalopy ge, pupa of 76 



Megalopygidie, pupa of 76 



Melanchroia 80 



Melanism 51,272 



in Cerurascitiscripta 276,278 



in Cerura acolopendrina 272 



in Notodonta atragula 165 



in Pheosia dimidiata 159 



Melanotic Xotodoutiana 51,159,165,272.276,278 



Metrua elongata, pupa of 69,70,7.1 



Micropterys, mouth parts of 58 



pupa libera of 62 



venation of 62 



Mimicry, protective 11,20 



Miiller, F., on ontogenetic de%'elopment of veins 84 



H., on origin of lepidoptera 55 



Natural selection 24 



inadequacy of 15 



Nematois violellus, larva, figured 63 



Neolepidoptera 61,62 



Nepticula, larval legs of 18 



Noctuidse, origin of 81 



Koctuobombycea 11 



Nola ovilla, pupa - 79 



NolidiB, pupa 79 



Notodonta atragula, nu'lanism in 165 



Notodontian fauna of North America 45 



larvie, grouping of, by their affinities 23 



Page^ 



Xotodontiana, nu-lani.sm in 51 



Notodontidft*, systematic revision of 87 



Notodontinse 30. 140 



CEcetieuf* abbot ii. pupa of 69,70 



CEnotus virescena, pupa 74 



CEta aurea, larva of 81 



pupa of 78,80 



Oucopera iutricata, i)upa 74 



Origin of miinetic or protective characters 7, 11, 15 



Paleolepidoptcra fil 



Panorpid.'e 14 



Paranal forks 26.279 



Parasa chloris. pupa of 76 



Phassus triangularis, pupa 74 



Pheosia dimidiata, melanism in 159 



Phryganidia californica, pupa of 79 



Phyllocnistis, larva of 18 



Phylogeny of Lepidoptera 51 



Plate, suranal 25 



Platy lepidoptera 62 



Platysaniia cecropia, ontogeny of 40 



Prickles of plants, origin of 16,17 



Primitive caterpillar 14 



Prionoxystua robinia^, pupa 76 



Prodoxjda- 64 



Prodoxus decipiens, pupa figured 64, 65 



Protolepidoptera 58 



Psycbida?. pupa of 68, 70 



relations of 68, 70 



Pupa, genital armature of 74. 77, 7& 



incompleta 53, 56, 79 



libera 53, 56. 62 



mouth parts of 53, 57. 62. 64, 65, 74 



obtecta 53,56,79 



venation of 54, 85 



Pup?e, Chapman on 52,56 



Pupal characters, inheritance of 33, 35 



Pygjerinjc 30 



Resemblance, protective 201, 202. 205, 206, 207, 215 



Saturuians. geographical distribution of 45 



origin of their thick bodies, etc 19 



Schizura concinna 30 



Seasonal variation 50 



Segregation 19 



Sesiida?, pupa of 77 



SetK, classification of 21 



origin of 7, 11, 16 



glandular % 21,24,26 



Shield, cervical, origin of 25 



Signals, danger 180, 181, 215 



Simaethia oxycantha, larva figured 63 



Size, increase in, in "VTestern compared with Eastern individ- 

 uals 159,213 



Solenobia piueti, pupa of 67,69 



walshella, pupa of 68,69 



Sonoran subprovince 45 



Specialized forms ^ . 42 



Sphinges, succeaa of, in struggle for existence 82 



Sphingicampa bicolor, ontogeny of 38 



Spilosoma virginica, origin of markinga of 15 



Spines, origin of 7, 11, 16 



in brachiopods 1" 



in trilobitca 1" 



Spota, development of 7, 11, 15 



Spuler, A., on i»upal forms 54 



venation 84 



Stemapoda 24,266,279 



Stem form.s of Lepidoptera M 



Stenopterygia ^^ 



Speyer, A ., on origin of Lepidoptera j &•* 



St imuli, ex ternal 22, 24 



Suraual plate ^5 



Symmerista albifronfl, origin of lines of 15 



Syntomida", pupa of '^ 



Talieporia conspurcatella, pupa of 67, 69 



