LIST OF ILLUSTRATIONS 



XI 



KIG. 



787. 



787. 



788. 



789. 



790. 



791. 



792. 



793. 



794. 



795. 



796. 



797. 



798. 



799. 



800. 



801. 



802. 



803. 



804. 



805. 



806. 



807. 



808. 



809. 



810. 



811. 



812. 



813. 



814. 



815. 



816. 



817. 



818. 



819. 



820. 



821. 



822. 



823. 



823 



824. 



825. 



826. 



827. 



828. 



829. 



830. 



831. 



832. 



'^ 



A. Muscles and nerves of eye 



B. Pineal eye of Sphenodon 

 Organ of hearing .... 

 Section of Aiupvdla 

 L^rinary tubule .... 

 Diagrams of urinogenital organs . 

 Development of mesoderm in Fro^ 

 Petromyzon marinus, external views of head 



,, ,, skull, with branchial basket 



,, ,, dissection of female 



brain 



,, ,, ,, with olfactory and pituitary sacs 



,, ,, development of olfactory and pituitary sacs 



,, ,, auditory organ .... 



,, ,, transverse section of abdomen 



,, ,, urinogenital sinus and related parts 



,, development 



,, sections of embryos 



,, tluviatilis, head of larva . 



Head of Myxine and of Bdellostoma . 

 Myxine glutinosa, dissection 



,, auditory organ .... 

 Bdellostoma, kidney .... 

 Palaeospondylus gunni . . • . 

 Hemiscyllium modestum 

 Scyllium canicula, verteV)r;u . 

 Hemiscyllium, skull .... 

 ,, visceral arches 



,, pectoral arch and tin . 



,, pelvic arch and tin 



,, lateral dissection . 



,, branchial sac 



Scyllium, heart and ])ranchial arteries 

 Hemiscyllium, blood-vessels 

 Scyllium canicula, brain 

 Hemiscyllium, brain .... 

 Scyllium catulus, cranial nerves and branchial plexus 

 bis. ,, canicula, cerebral nerves 



,, ,, urinogenital organs 



Hemiscyllium, right kidney and urinary sinus 



Dog-fish, egg-case 



Cladoselache fyleri 



Pleuracanthus ducheni 



Acanthodes wardi 



Chlamydoselachus anguineus 



Lamna cornul)ica 



Urolophus cruciatus 



PAfiK 



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