VI 
Systematic A rrangement. 
CLASS PISCES — Continued. Pape. 
SUBCLASS SELACUII— Continued. 
Order Diplo.‘<po.\dyli— C ontinued. 
Family Hexanchidee 17 
Genua Xotorbynchua, Ayres 17 
maculatus, Ayres 17 
Genus Hexanchus, Raflnesque 18 
corinus,. Jordan &, Gilbert 18 
griseus (Gmelin) 19 
Order Asterospoxdyli 19 
Suborder Proarthei 19 
Family Hetfrodontidce 19 
Genus Gyropleurodus, Gill -■ 20 
francisci (Girard) 20 
quoyi (Freminville) 21 
Suborder Galei 21 
Family Scylliorhinidce 22 
Genus Scylliorbinus, Blainville 22 
profundorum, Goode & Bean 22 
Genus Catulus, Smith 23 
Subgenus Catulus 24 
xaniurus, Gilbert 24 
brunneus, Gilbert 24 
cepbalus, Gilbert 24 
retifer (Garinan) 25 
Snbgenus Cepbalosc 5 'llium, Gill 2-5 
uter, Jordan A Gilbert 25 
Family Ginglymogtomidce 25 
Genus Ginglyniostonia, Muller <fc Henle 26 
cirratuin (Gmelin) 20 
Family Fseudotriakida: 20 
Genus Pseudotriakis, Capello 27 
microdon, Capello 27 
Family Galeidce 27 
Genus Mustelus, Cuvier 28 
lunulatus, Jordan A Gilbert 28 
eanis (Mitcbill) 29 
Genus Galeus, Rafinesque 29 
dorsalis (Gill) 30 
californicus (Gill) 30 
Genus Rbinotriacis, Gill 30 
benlei. Gill 31 
Genus Triakis, Miiller Sc Henle 31 
semifaseiatum, Girard 31 
Genus Galeorbinus, Blainville 31 
zyopterus, Jordan & Gilbert 32 
Genus Galeoeerdo, Muller Sc Henle 32 
tigrinus, Muller <fc Henle 32 
Genus Prionace, Cantor 33 
glauca (Linnieus) 33 
Genus Carcbarliinus, Blainville 33 
Subgenus Platypodon, Gill 35 
obscurus (Le Sueur) 35 
platyrbyncbus (Gilbert) 30 
faleiformis (Bibron) 36 
acronotus (Poey) 36 
perezi (Poey) 36 
