198 



LEECHES 



Deamination, 44 

 Dermis, 18 



Development, 101, 116-133 

 Digestion, 37-43 

 Dina, 34, 83, 134, 140 

 Dorsal light reaction, 88 



Ecology, 136-146 



Ectoderm, 118-120, 125, 126, 



129-133 

 Egg, 110, 111, ii4, 115, 119, 121, 



127, 133, 139 

 Ejaculatory ducts, 10, 11, 109 

 Embryology, 121-133 

 Endoderm, 118, 119, 121, 123, 



125, 128-133 

 Entamoeba, 141, 142 

 Enzymes, 39, 40 

 Epidermis, 16-18 

 Epididymes, 10, 11 

 Erpobdella 



appearance, 33 



behaviour, 84, 85, 89, 93, 95, 96 



breeding, 101, 110-112 



chromosomes, 1 34 



circulation, 53, 54, 55 



copulation, 107 



description, 34 



ecology, 115, 116, 137-lAl, 

 143, 144 



embryology, 126-130 



eyes, 81, 82 



excretion, 48 



locomotion, 74 



mortality, 145, 146 



oxygen consumption, 57-61 



parasites, 143, 144 



spermatophore, 105 

 Erpobdellidae, 22, 34, 48, 104, 



108 

 Evolutionary history, 134 

 Excretion, 44—51 

 Excretory organs, Hirudo, 12 

 Eye, 19, 81, 82, 91 



Faivre's nerve, 21 

 Female pore, 6, 7, 25, 30 



Fertilization, 104-109, 110, 133 

 Fibrocytes, 18 



Ganglia, 13, 69 



anal, 77, 78 



segmental, 15, 72 



sub-oesophageal, 14, 75-77 



supra-oesophageal ( = cerebral), 

 14, 75, 77, 124 



ventral, 70, 71 

 Gastrulation, 118, 123, 130 

 Genital pore, 108 

 Geotaxis, 96, 97 

 Germinal band, 120, 122-132 

 Gills, 29, 30 

 Glossiphonia 



anaerobiosis, 60 



anatomy, 25 



behaviour, 84-86, 93-98 



breeding, 101, 110, 113, 114 



chromatophores, 91 



chromosomes, 134 



description, 23-28 



ecology, 137-140 



embryology, 122, 123-126 



eyes, 82 



feeding, 43, ii5, 116 



food reserve, 42 



mortality, 144, 145, 146 



nephridium, 26 



oxygen consumption, 57, 58 



pigment cells, 47 



spermatophore, 105 

 Glossiphoniidae, 22, 23, 48, 88, 

 104, 108, 113, 121-127, 133, 

 135, 141 

 Glycogen metabolism, 45 

 Gnathobdellae, 3, 22, 32, 127, 



133-135 

 Gonads, 2, 11, 25, 30, 101 

 Gravity perception, 96 

 Gravity reaction, 96-97 

 Gut, 3, 8, 9, 17, 25, 30, 36-43 



Habituation, 89, 90 

 Haemadipsa, 33, 34, 37, 92, 104, 

 140 



