CONTENTS /^.i*-^.^ 



Introduction 247 



Discovery of Chlamydoselachus anguineus 248 



Geographical Distribution 249 



In Japanese Waters 249 



At Funchal, Madeira 254 



On the Arctic Coast of Norway 254 



In the Bay of Biscay 255 



Off the Iberian Peninsula 255 



In Moroccan Waters 256 



Summary of Geographical Distribution 256 



Depths at Which Chlamydoselachus Has Been Taken 257 



Specimens in Museums and their Sources 258 



Distinctive Morphological Characters 260 



The Animal as a Whole 260 



General Form and Appearance 260 



Length of Chlamydoselachus 261 



Color of the Frilled Shark 265 



The Head of Chlamydoselachus 266 



General Form 266 



Mouth and Jaws 267 



Breathing Valve 269 



Teeth of Chlamydoselachus 271 



Eyes of Chlamydoselachus 277 



Nostrils of the Frilled Shark 279 



The Spiracles of Chlamydoselachus 279 



Gill Openings of the Frilled Shark 280 



The Trunk of Chlamydoselachus 281 



General Form 281 



Tropeic Folds 283 



Cloacal Aperture and Abdominal Pores 285 



Dermal Denticles 286 



Sensory Canal System and Associated Organs 287 



The Tail of the Frilled Shark 290 



The Fins of Chlamydoselachus 291 



Paired Appendages 291 



Unpaired Fins 292 



Food of Chlamydoselachus 297 



Parasites of the Frilled Shark 298 



Breeding Habits of Chlamydoselachus 298 



Viviparous Mode of Reproduction 298 



Breeding Season 302 



Period of Gestation 302 



245 



LIIRAP 



