CONTENTS. 



On the Appendices Oenitales 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 



Spinacidce: Acanthias vulgaris Risso 27 



Spinax niger Bonap 29 



Scvniuus lichia Bonap 31 



Scylliidit: Scyllium canicula (L.) 32 



Scylliuin stellare 1I..1 34 



Pristiurus nielanostomus (Bonap.) ... 36 



Lanmidae: Lanina coruubica (Ginelin) 37 



Selachus maximus (Gunnerus) 39 



Rhinidae: Rhina squatina (L.) 41 



Cestraciontidse: Heterodontus (Cestracion) PhilUpi 



(Cuv.) 45 



Notidanidte: Chlamydoselachus anguineus Gannan 45 



Page 



Carchariidae: Mustelus antarcticus Gthr 46. 



Batoidei 47. 



Torpedinida;: Toqiedo marmorata Risso 47. 



— Toqiedo oculata Belon 50. 



Narcine sp 50. 



Rhinobatidae : Rhinobatus coluiuna; Bonap 52. 



Trygonidse: Trygon violacea Bonap 53. 



Rajidie 55. 



Raja batis I. 56. 



— Raja nidarosiensis Collett 59. 



Raja clavata L 39. 



— Raja radiata Donovan 63. 



— Raja fyllae Ltk 66. 



— Raja circularis Couch 67. 



Holocephala 68 



Chimsera monstrosa L 69. 



Callorlrynchus antarcticus (Lacep.) 74. 



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



Addenda 82. 



Explanation of the Plates 84. 



