CONTENTS. 



On the Appendices Qenitales In the Greenland Shark, Somniosus Microcephalus (Bl. Schn.), and other Selachians. 



Page 



Introductory remarks I. 



I. The appendages of the Veutrals in the Greenland 



Shark i 



II. The ventral appendages in other Selachians 17 



1. A general \-iew of the Copulatorj- appendages in 

 the Selachians 17, 



2. Special part 27 



Selachoidei 27, 



Spinacidse: Acautliias vulgaris Risso 27 



— Spinax niger Bonap 29, 



— Scymnus lichia Bonap 31 



Scylliidse: ScyUium canicula (L.) 32 



— ScyUium stellare (L.) 34, 



— Pristiurus melanostomus (Bonap.) ... 36, 

 Lamnidse: Lamna cornubica (Gmehn) 37, 



— Selachus maximus (Gunnerus) 39, 



Rhinidse: Rhina squatina (L.) 41 



Cestraciontidce : Heterodontus (Cestracion) PhiUipi 



(Cuv.) 45 



Notidanidse: Chlamydoselachus anguiueus Garman 45, 



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Carchariidte : Mustelus antarcticus Gthr 46. 



Batoidei 47. 



Torpediuids; Torpedo manuorata Risso 47. 



— Torpedo oculata Belon 50. 



— Narcine sp. 50. 



Rhinobatidfe: Rhiuobatus columns; Bonap 52. 



Trygonidfe: Trygon violacea Bonap 53. 



Rajidse 55, 



— Raja batis L 56. 



— Raja nidarosiensis CoUett 59. 



— Raja clavata L 59. 



— Raja radiata Donovan 63. 



— Raja fylte Ltk 66. 



— Raja circularis Couch 67. 



Holocephala 68. 



Chimsera monstrosa L 69. 



Callorhyuchus antarcticus (Lacep.) 74. 



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



Addenda 82. 



Explanation of the Plates 84. 



