SYSTEMATIC INDEX. 



Introduction : 



Remarks on the distinction of species 



Measurements 



Abbreviations 



Part I — Review of the species. 



Part II— Synopsis of the species: 



Artificial key to the species, based on 

 Artificial key to the species, based on 



Eeview. ^^l^P' 



Page. Page. 

 Subfiimily DELPHININAE : 



Sotalia 13 153 



gadamu 13 154 



lentiginosa 15 155 



guianensis 17 155 



brasilieusis 17 155 



pallida 17 156 



tucuxi 17 155 



fluviatilis 17 156 



plnmbea 21 153 



sinensis 23 153 



Steno 23 156 



rostratus 24 157 



perspicillatus 32 157 



Tiirsiops 32 158 



tursio 32 158 



catalania 40 159 



abusalam 41 159 



parvimanus 43 159 



gillii 43 160 



Delphinus 44 160 



delphis 45 160 



longirostris 58 161 



capensis 59 162 



roseiventris 60 162 



Prodelphinus 61 162 



cccrnleo-albua 62 163 



euphi'osyne 63 163 



? lateralis 65 164 



plagiodou 66 164 



frcenatus 68 166 



malayanus 67 165 



external characters 

 cranial characters.. 



Iievic2v. 

 Page. 

 Subfamily DELPHININAE— 

 Continued. 



Prodelphinus — Cont'd. 



attenuatus 67 



longirostris 75 



Tursio -. 77 



peronii 78 



borealis 80 



Lagenorhynchus 83 



acutus 85 



fitzroyi 87 



thicolea 88 



cruciger 90 



superciliosus 92 



albirostris 94 



obliquidens 96 



electra 100 



obscurus 104 



Sagmatias 106 



amblodon lOfi 



Feresa 107 



intermedia 107 



Cephalorhynchns 108 



hoavisidei 108 



albifrons Ill 



hectori 112 



eutropia 112 



Neomeris IM 



phocaiuoidcs Ill 



PhocEcna 117 



communis 118 



spinipinnis 122 



7 



Page. 



9 

 12 

 12 



151 

 1.52 



Synop- 

 sis. 

 Pago. 



165 

 16r. 

 167 

 167 

 168 

 168 

 169 

 170 

 173 

 170 

 171 

 171 

 172 

 173 

 174 

 174 

 175 

 175 

 175 

 176 

 17(; 

 177 

 177 

 17H 

 178 

 178 

 179 

 179 

 180 



