CONTENTS. 



On the Appendices Qenitales in the Greenland Shark, Somniosus Microcephalia (Bl. Schn.)> and other Selachians. 



Page 



Introductory remarks I. 



I. The appendages of the Ventrals in the Greenland 



Shark I, 



II. The ventral appendages in other Selachians 17 



1. A general view of the Copulatory appendages in 

 the Selachians 17 



2. Special part 27 



Selachoidei 27 



Spinacidae: Acanthias vulgaris Risso 27 



Spinax niger Bonap 29 



Scyumus lichia Bonap 31 



Scylliidse: ScyUiutn canicula (L.) 32 



— Scyllium stellare (L.) 34 



— Pristiurus melanostomus (Bonap.) ... 36 

 Lamnidae: Lamna cornubica (Gmelin) 37 



Selachus maximus (Gunnerus) 39 



Rhinidae: Rhina squatina (L.) 41 



Cestraciontidae : Heterodontus (Cestracion) Phillipi 



(Cuv.) 45 



Notidanidae: Chlamydoselachus anguineus Garman 45 



Page 



Carchariidae: Mustelus antarcticus Gthr 46. 



Batoidei 47 



Torpedinidae : Torpedo marniorata Risso 47 



— Torpedo oculata Belon 50 



Narcine sp 50. 



Rhinobatidae : Rhinobatus columns: Bonap 52 



Trygonidae: Trygon violacea Bonap 53 



Rajidae 55 



— Raja batds L 56 



— Raja nidarosiensis Collett 59, 



Raja clavata L 59 



— Raja radiata Donovan 63 



— Raja fyllas Ltk 66. 



— Raja circularis Couch 67 



Holocephala 6S 



Chimaera monstrosa L 69 



Callorhynchus antarcticus (Lacep.) 74. 



3. Which is the function of the appendices genitales? 77 



Addenda S2 



Explanation of the Plates S4 



419-.' 



