Cahira lerneodiscus, 146 270 Caligi, 34, 44 ---- with cable, 72 Caligulus elegans, 73 Callianassa, 28 Cancer lanosus, 22 Cancrisocia expansa, 22 Caprella, 77 Caris elliptica, 135 Cecidomya, 171 Cellepora, 62 Cenobita, 25 Cepes distortus, 145 Ceratopogon, 119 Cercariæ, 192 Cestodes, 204 Chætogaster, 114 Chætopterus insignis, 43 Chalcididæ, 166 Chama squamata, 19 ---- Pliny on the, 18 Chelonobia, 58 Cheyletus of Leroy, 137 Chigoë, 105, 141 Chironomus, 116 Chrysaora isocela, 10 Cimex lectularia, 123 Cirrhipedes, 56 ---- on Neptunus, 59 ---- on the Langouste of Cape Verd, 58 Clione, 50 Cochlialepsis parasitus, 39 Coenurus of the Sheep, 99 Comatula, 36 Conchoderma gracile, 151 ---- on Sea Snakes, 58 Conchodytes, 17 Concholepas Peruviana, 60 Conops, 176 Corethria on Sertularia abietina, 66 Corethra, 116 Coronilla robusta, 248 Coronula, 56 Crenella on Sponge, 40, 61 Creusia, 60 Crisiæ, 61 Cryptolepas, 57 Cryptolithoides typicus, 22 Cryptophiolus minutus on Concholepas, 60 Culex pipiens, 116, 118 Cucullanus elegans, 238 Cucumerina, 71 Cuterebra noxialis, 175 Cyami, 34, 76 Cyanea arctica, 49 Cydippe densa, 47 Cylicobdella lumbricoides, 112 Cymothoa, 9 Cymothoe, 31 ---- of Trachina vipera, 32 ---- fresh-water, 32 ---- stromatei, 31 Cynips of Aphis, 172 Cypræa on Melithæa, 38 Cysticercus tenuicollis, 222 ---- of the pig, 215 ---- rabbit, 220 Demodex caninus, 134 Demodicidæ, 134 Dactylometra quinquecirra, 9 Dermanyssus avium, 135 Diadema, 56, 60 Dichelaspis on Sea Snakes, 58 Dicyema, 161 Diplozoon, 98 Diporpa, 260 Distomum filicolle, 201 ---- Goliath, 199 Distome with cables, 84 Distomes of Cheiroptera, 199 Distomidæ, 190 Distomum hepaticum, 95 ---- ocreatum, 45 ---- ventricosum, 45 Dochmius trigonocephalus, 238 Donzellina, 4 Drilus, 13 Dromia, 22 Echinococcus, 225 Echinomya, 176 Echinorhynchi, 251 Echinorhynchus angustatus, 252 ---- gigas, 96 ---- hæruca, 251 Elminius, 60 Enalcyonium rubricundum, 152 Enchelyophis vermicularis, 6 Enterocola fulgens, 151 Entoconcha, 37, 158 271 Entoniscus porcellanæ, 146 Epichtys, 31 Epibdella, 259 Epizoanthus Americanus on Eupagurus, 63 Eubranchella, 112 Eulimæ, 36 Euplectella, 23, 30, 50 Euriechinus imbecillus, 20 Eurysilenium, 152 Fabia Chilensis, 20 Fierasfer, 5 Filaria of Medina, 105, 153 ---- immitis, 153 ---- attennata, 234 Filaroides mustelarum, 250 Fishing Frog and Amphipod, 33 Fleas, 126 ---- harnessed, 129 ---- of the sea shore, 128 ---- Dugès on, 128 ---- Van Helmont on, 127 Flies, 119