i3° 
Index . 
Cermatia, 128 (fig.) 
Cervical groove, 15 
Charontinae, 90 
Cheese-mite, 113 
Chelate, 17 
Chelicerae, 81 
Chelifer, 105 (fig.), 106 
Cheliferidae, 106 
Cheliped, 17 
Chelura, 42, 47 
Clielypus, 104 
Chilobrachys , 91 
Chilognatha, 121 
Chilopoda, 125 
Chitin, 21 
Chordeumoidea, 122 
Chthoniidae, 106 
Cirri, 32 
Cirripedia, 31 
Cladocera, 27 
Classification of Crustacea, 
25 ; of Arachnida, 80 ; of 
Acari, 109 
Clubionidae, 99 
Coco-nnt Crab, 60, 61 (fig.) 
Cocoon of Araneids, 92 
Coenobita, 61 
Coenobitidae, 61 
Colobognatba, 122 
Colossendeis, 116 
Colulus, 96 
Commensalism, 60 
Concbostraca, 27 
Copepoda, 29 ; parasitic, 30 
Copulatory organ, 91, 106 
Coronula, 34 
Corystes, 73 (fig.) 
Corystidae, 72 
Courtship of Spiders, 101 
Coxa of Crustacea, 15 
Crabs, 64 
Crab-spiders, 99 
Crangon, 53 
Crangonidae, 53 
Craterostigmomorpba, 127 
Graterostigmus, 127 
Crawfish, Sea, 56 
Crayfishes, 55 ; blind, 56 ; 
Northern, 55; red-clawed, 
55; Southern, 56 ; white- 
clawed, 56 
Cribellum, 96 
Crustacea, 11 
Cryptolithodes, 62 
Cryptops, 127 
Cryptostemma, 106 (fig.) 
Cryptostemmatidae, 107 
Cryptostigmata, 110 
Ctenizidae,.95 
Cumacea, 39 
Cyamidae, 47 
Cyclometopa, 70 
Cyclophthalmus, 85 
Cymothoidae, 42 
Cypris, 29 (fig.) 
Cypris-stage of .Cirripedes, 
33 
Cythereis, 29 (fig.) 
D. 
Damon , 89 (fig.) 
Daphnia, 27, 28 (fig.) 
Darwin, 34, 92 
Decapoda, 50 
Decolopoda, 116 (fig.) 
Delobranchia, 81 
Demodex, 114 (fig.) 
Demodicidae, il4 
Desis, 101 
Development, of Lobster, 
20 
Diastylis , 40 (fig.) 
Digestive gland, of Crus- 
tacea, 18 
Digestive system, of Crus- 
tacea, 17 
Diplopoda, 9, 120 
Dipluridae, 94 
Dispersal of young spiders, 
92 
Dorippidae, 68 
Dromia, 65 (fig.) 
Dromiacea, 65 
Dromiidae, 65 
Dwarf males, 31, 33 
Dynomene, 66 
Dynomenidae, 66 
Dysderidae, 101 
E. 
Ebalia, 24, 68 
Ecdysis, 21 
Echidnocerus, 62 
Edible Crab, 22, 72 
Eggs of Lobster, 20 
Embolobrancbia, 84 
Endopodite, 15 
Eoperipatus, 118 
Eoscorpius, 85 
Epeiridae, 97 
Epeira, 97 
Ephebopus , 95 
Epiblemum, 102 (fig.) 
Epicaridea, 44 
Epipodite, 16 
Eresidae, 101 
Eresus, 101 
Erichthus, 48 
Eriophyes, 114 (fig.), 115 
Eriopbyidae, 114 
Eryon, 59 
Eryonidea, 58 
Estheria, 27 (fig.) 
Ethmostigmus , 127 
Euaracbnida, 81 
Eucarida, 49 
Euchaeta, 30 
Eucopepoda, 30 
Eumunida, 63 
Eupagurus, 60 (fig.) 
Eupbausiacea, 49 
Eurydesmus, 123 (fig.) 
Eurypauropus , 124 
Eurypterines, 83 
Eurypterus, 83 (fig.), 84 
Euscorpius, 85, 87 
Eurythenes, 46 
Exopodite, 15 
Exoskeleton, 12 
Eye-stalks, 17 
F. 
False Scorpions, 104 
False Spiders, 102 
Feaellidae, 106 
Feelers, 15, 81 
Fiddler Crab, 74 
Flabellifera, 42 
Flagellum, 103 
Flower-spiders, 99 
Fossil, Crustacea, 38 ; 
Pseudoscorpions, 105 ; 
Scorpions, 85 ; Spiders, 
93, 94 
Fowl-tick, 111 
Frog-Crab, 68 
G. 
Galathea , 63 
Galatheidea, 63 
Galea, 105 
Galeodes, 103 (fig.), 104 
Galeodidae, 104 
Gall-mites, 114 
Gamasidae, 310 
Gamasus, 110 (fig.) 
Gammaridea, 45 
Gammarus, 45 (fig.), 46 
Garypidae, 106 
G aster acantha, 97 (fig.), 98 
Gastric mill, 17 
Gelasimus, 74, 75 (fig.) 
Geocarcinidae, 73 
Geocarcinus, 74 
Geopbilomorpba, 125 
Geophilus, 126 (fig.) 
