398 



ILLUSTRATIONS. 



37 Eyes of Mygale avicularia 



38 „ Mygale ccementaria 



39 „ Lycosa vorn.v 



40 ,, I)uU)ihedes marginatus 



41 ,, Ctenus dubius , 



42 ,, Spkasus indianus 



43 „ Attus pnrus 



44 „ Eresus cinnnberinus 



45 ,, Thomisus citreus . 



46 „ C'litbiona nccentuata 



47 ,1 Dysdera rrythrina 



48 ,, Scgestria perjida 



49 ,, Tegenaria domestica 



50 „ Epcirn dindema . 



51 ,, Thoridion coronatum 



52 „ Latrodecta {^guttata 



53 „ Argyroneta aquatica 



54 Head of rlie vvovker-bee 

 53 Eyes of the male bee . 



56 Tetrups prcrusta 



57 Eyes of ditto, greatly magnified 



58 Gyrinv.s natator 



59 Kye.s of ephemera, greatly magnifiec 



60 ¥,\es of the bee, greatly magniried 



61 Section of the eye of the dragonfly 



62 Section of the eye of the stag-beetle ... 



63 Section of a conipound eye, showing the course of the light 



64 Giant cockroach (S/a^?a/7/(;rtr,^(?rt) 



65 Praying mantis {Mantis religiusn) . 



66 Virgin dragon-fly (^Caleptcry.r Virgii) 



67 Tongue of the bei-, with its muscles and sheath 



68 Structure of the bee's tongue .... 



69 Larkspur {Delphinium chuilantlium'), and Columbine (^Aqnilcgia 



bicolir^, showing the horn-shaped nectaries 



70 Aphis Quercus, real size and mignitied 



71 Sncker of the Ap/iis Qnci-cns, mugmt'ied . 



72 £^»-?n.?omnma/(, and an infected apple-branch . . . . 



73 Suckers of the black-horned bug (C'/me.r nigricornis') m^^n'xfed 



74 Magiiitied figures of the sucker of a water-bug (^Ntpa ncptunia) 



75 Suckers of the flea, greatly magnified 



76 Chigoe {Fulex penetrans') 



77 Magnified figures of the sucker of the gnat 



78 Modes of operation of the gnnfs sucker 



79 Male and female gnaf, mngnified 



80 'I he cleg {Hcpmat puta pluinalis) 



81 Parts ol the cleg magnitied, to show the sucker 



82 Sucker of Sphinx celeriu 



83 Male spider, with the />/(/pt magnified 

 8-1 Male and fem^tle stag-beetle 



85 Male and female Bombus 



86 Ctenophorajlaveohita 



87 Ctenophorn urnata . 



88 Male and female glowworms 



89 Head of male glow-worm 



90 ViYe f[y {Elater noctilucHs'j 



91 I>antern-fly [ Fulgora lanternaria') . , 



92 Electric centipede {Scolupendra electric(C) 



93 Munophora noctiluca . . • • 



