rv BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Class Pisces — Continued. 



Subclass Elasmobranchii — Continued. 

 Order Asterospondyli — Continued. 



Family Orectolobidae — Continued. Page 



Genus Hemiscyllium A. Smith 80 



Subgenus Hemiscyllium A. Smith 81 



Subgenus Chiloscyllium Miiller and Henle 85 



Subgenus Synchismus Gill 89 



Genus Orectolobus Bonaparte 92 



Subgenus Orectolobus Bonaparte 93 



Subgenus Eucrossorhinus Regan 99 



Genus Stegostoma Miiller and Henle 99 



Family Isuridae 103 



Genus Isurus Rafinesque 103 



Genus Lamna Cuvier 107 



Genus Carcharodon Miiller and Henle 109 



Family Halsydridae 112 



Genus Halsydrus Fleming 112 



Family Rhincodontidae 115 



Genus Rhincodon A. Smith 115 



Family Pscudotriakidae 117 



Genus Pseudotriakis Capello 118 



Family Carchariidae 119 



Genus Carcharias Rafinesque 119 



Genus Scapanorhynchus Woodward 123 



Family Alopiidae 124 



Genus Alopias Rafinesque 125 



Family Galeorhinidae 127 



Genus Galeolamna Owen 128 



Genus Physodon Miiller and Henle 129 



Genus Scoliodon Miiller and Henle 131 



Subgenus Rhizoprionodon Whitley 132 



Subgenus Scoliodon Miiller and Henle 140 



Genus Aprionodon Gill 141 



Genus Hypoprion Miiller and Henle 144 



Genus Eulamia Gill 147 



Subgenus Isoplagiodon Gill 150 



Subgenus Platypodon Gill 158 



Subgenus Eulamia Gill 168 



Genus Glyphis Agassiz 178 



Genus Loxodon Miiller and Henle 181 



Genus Hemigaleus Bleeker 182 



Subgenus Chaenogaleus Gill 182 



Subgenus Hemigaleus Bleeker 184 



Genus Galeocerdo Miiller and Henle 185 



Genus Galeorhinus Blainville «. 188 



Genus Hemipristis Agassiz 192 



Genus Triaenodon Miiller and Henle 193 



Genus Leptocharias Miiller and Henle 195 



Genus Triakis Miiller and Henle 1 96 



Subgenus Triakis Miiller and Henle 197 



Subgenus Calliscyllium Tanaka 199 



