LIST OF ILLUSTRATIONS 



Page 

 Head of an extinct Toothed Bird {Hesper- 



ornis regalis] (after Marsh) 45 



A Falcon preying upon Lemmings 46 

 A Secretary- Bird (Serpentarius secretarius) 



attacking a Snake 47 



A Darter {Plotus) 49 



A Pelican (Pelecanus) 50 



Gulls and Terns 51 



Skua (Stercorarius) - 51 



Scissor-Bill {Rhynchops) hunting 52 



Frigate-Bird (Fregatus) 53 

 Red-breasted Merganser {Mergus serrator) 



and Black - throated Diver (Colymbus 



arcticus) 54 



'^\^\.-\&x {Caprhmilgus Europmus) • 56 



Greater Spotted Woodpecker (Dendrocopus 



major) - 58 



Common Creeper (Certhia familiaris) 59 



Blue Roller ( Coracias gamilus) 60 



Crowned Tyrant (Muscivora regia) - 61 



African Ox- Pecker {Buphaga Africana) 62 

 White-eared Honey-Guide {Indicator Spar- 



inanni) 63 



Huias {Heteralocha Gouldi) 64 



Great Butcher- Bird (Lanius excubitor) 65 



Head of Duck {Anas boschas) 65 



Yellow Wagtail {Motacilla flava) 66 



Black-tailed Godwit {Limosa Belgica) 66 



Curlew {Ninnenius arquatus) - 67 



Woodcock {Scolopax rusiicola) - 68 



Hawk-bill Turtle ( Chelone imbrkaia) - 72 



Chameleon seizing its Prey 74 



Tunisian Lizards 77 



Poisonous Asiatic Snakes - 78 



Skull of Rattlesnake 80 

 Tongue of Frog extended to secure its 



Prey 82 



Toad catching its Prey 83 



Angler-Fish {Lophius piscatorius) 85 



Deep-sea Angler {Melanocetus Murrayi) 86 



Cross-section through Electric Eel 87 



Saw-Fish [Pristis antiquorum) 89 



Port Jackson Shark { Cestracion Philippi) - 89 



Eagle Ray {Myliobatis aqiiila) - 90 



Electric Ray ( Torpedo) • go 



Suctorial Mouth of Lamprey (Peiromyzon) 91 



Hag-Fish {Myxine gliilinosa) 91 

 Front End of Nemertine, with Proboscis 



partly protruded 93 



Beaks of Cuttle-Fish {Sepia officinalis) 95 

 A Single Row of Teeth from Raduls of 



Carnivorous Snails ■ 9^ 



The Purple-Shell {Purpura lapillus) 97 

 Barbed Poison -Tooth from Radula of a 



Cone {Conus) 97 

 A Boring Carnivorous Sea-Snail {Nalica 



fosephina) 98 



Page 



Bivalve Shells bored by Natica 98 



Heteropods 99 

 Foraging - Ants {Eciton hamata) on the 



march - 104 

 Bird-catching Spider (Mygale) threatened 



by a Sand-Wasp (Pepsis) • 106 



Newts and Fresh-water Insects 108 



Scavenging Beetles - 109 



The Ant-Lion (Myrmeleo formicarius) 112 

 Mantis Net -Wing {Mantispa areolaris) 



(after Westwood) - 113 



Praying Mantis {Mantis religiosa) 117 



Flies {Diptera) 119 



Tsetse-Fly (Glossina morsitans) 120 

 Mouth-parts of a Female Gnat {Culex) 



(after Becher) 121 

 The Common Flea {Pulex irritans) - 122 

 Mouth-parts of a Tree-Bug {Cicada) en- 

 larged - 122 

 'Laxva. of Peduvius personatus 123 

 A Pond -Skater {Gerris paludum) en- 

 larged - 123 

 A Marine Bug {Halobates) (after Challenger 



Report) 124 



Spinnerets of Spider (greatly enlarged) 127 



A House-Spider {Tegenaria) in its Web 129 



Hunting Spiders {Salticus scenicus) 131 

 Shield-bearing Centipede {Scutigera) (after 



Buffon) 1 33 



Gastric Mill of Crayfish 136 



Hermit Crabs {Pagurus Bernhardus) 138 



Swift Land Crab {Ocypus) 140 



Sea-Slater (Ligia oceanica) 143 



Sea-Mouse {Aphrodite aculeata) 147 

 Structure of Medicinal Leech {Hirudo me- 



dicinalis) (after Leuckart and Hatschek) 148 

 Green Bonellia {Bonellia viridis) 150 

 A Triclade Planarian with Pharynx pro- 

 truded - 152 

 Beroe - 156 

 A Sea- Anemone 156 

 Thread-Cells 158 

 A Branching Coral 159 

 A Hydroid Zoophyte {Tubularia) 160 

 Group of Individuals from a Millepore 



Coral {Millepora) (after Moseley) 161 

 A Compound Jelly-Fish {Physophora hy- 



drostatica) (after Haeckel) 162 



Grinding-Teeth of Horse {Equus caballus) 166 



Stomach of Sheep {Ovis aries) - 168 



The Okapi {Okapia Johnstoni) - 170 



Grinders of African and Indian Elephants 172 

 The Indian Elephant {Euelephas In- 



dicus) 172 



The Dugong {Halicore dugong) 174 



Hares {Lepiis tiniidus) 175 



Abnormal Skull of Hare {Lepus timidus) - 176 



