692 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Ostrea   var.   alepidota   Dall,    Clark   and 
Martin.  2. 
eduliformis  Schlotheim,  Madsen,  1. 
lugubris  Conrad,  Johnson  (D.  W.), 
5. 
lurida  Carpenter,  Arnold,  2. 
percrassa  Conrad,  Glenn,  6. 
sellseformis     Conrad,     Clark     and 
Martin,  2. 
sellseformis    var.     thomasii     (Con- 
rad),  Glenn,  6. 
trigonalis    Conrad,    Glenn,    6. 
(Gryphseostrea)    vomer    (Morton), 
Clark  and  Martin,  2. 
sp.,  Glenn,  6. 
sp.,  Shattuck,  8. 
sp.,  Cragin,  2. 
Otidophyton    hymenopbylloides    n.    sp., 
White  (D.),  18. 
Otocoelidae  Cope,  Case,  12. 
Otodns   obliquns   Agassiz,    Eastman,    1, 
18. 
Otouphepus  n.  gen.,  Cushman,  1. 
magnificus  n.  sp.,  Cushman,  1. 
Otozamites    oregouensis    n.    sp.,     Fon- 
taine, 2. 
Otozoum  E.  Hitchcock.   Lull,  2. 
caudatum  C.  H.  Hitchcock,  Lull,  2. 
moodii  E.  Hitchcock,  Lull.  2. 
parvum  C.  H.  Hitchcock,  Lull,  2. 
Otusia  n.  subg.  of  Billingsella,  Walcott, 
12. 
Ovula  symmetrica  n.  sp.,  Aldrich,  2. 
Owenites  n.  gen.,  Hyatt  and  Smith,  1. 
koeneni  n.  sp.,  Hyatt  and  Smith,  1. 
Oxyaena,  Matthew   (W.  I).),  19. 
Oxyamidae,  Matthew   (W.  D.),  19. 
Oxychenidae,  Matthew  (W.  D.),  19. 
Oxydactylus  n.  gen.,  Peterson,  1. 
Oxydactylus,  Matthew  (W.  D.),  15. 
brachyodontus  n.  sp.,  Peterson,  1. 
brachyodontus,  Matthew    (W.  D.), 
15. 
longipes  n.  sp.,  Peterson,  1. 
longipes,  Matthew   (W.  D.).  15. 
Oxydiscus  cristatus  Safford,  Hayes  and 
Ulrich,  1. 
subacutus  Ulrich,  Weller,  6. 
Oxyrbina  Agassiz,  Eastman,  18. 
desorii  Agassiz,  Eastman,  18. 
hastalis  Agassiz,  Eastman,  18. 
minuta  Agassiz,  Eastman,  18. 
sillimani  Gibbes,  Eastman,  18. 
Pachydesma  Conrad,  Dall,  8. 
Pachyama  gigantea  O.  and  W.,  Matthew 
(W.  D.),  1. 
Pachydiscus    binodatus    n.    sp.,    Whit- 
eaves,  12. 
haradai  Jimbo,  Whiteaves,  12. 
henleyensis  n.  sp.,  Anderson,  3. 
merriami  n.  sp.,  Anderson,  3. 
multisulcatus  n.  sp.,  Whiteaves,  12. 
neevesii  n.  sp.,  Whiteaves,  12. 
newberryanus     Meek     sp.,     Whit- 
eaves, 12. 
Paleontology — Continued. 
Genera  and  species  described — Continued. 
Pachydiscus    newberryanus    Meek    (not 
Gabb),    Anderson,   3. 
otacodensis     Stoliczka     sp.,     Whit- 
eaves, 12. 
(haradai?  var.)   perplicatus,  Whit- 
eaves,  12. 
sacramenticus  n.  sp.,  Anderson,  3. 
suciensis  Meek  sp.,  Whiteaves,  12. 
laevicanaliculatus  n.  sp.,  Lasswitz, 
1. 
Pachydistya  foliata  Ulr.,  Sardeson,  4. 
Pachymya    austinensis     ( ?)     Shumard, 
Shattuck,   8. 
Pachyphyllum      Milne      Edwards      and 
Haime,  Lambe,  2. 
devoniense     Milne     Edwards     and 
Haime,  Lambe,  2. 
minutissimum  n.  sp.,  Webster,  3. 
woodmani  var.  ruddi  n.  var.,  Web- 
ster, 3. 
woodmani  var.   gregarium   n.   var., 
Webster,  3. 
Pachypoma  Gray,  Arnold,  2. 
inaequale  Martyn,  Arnold,  2. 
Pachyrhizodus  Dixon,  Stewart,  1. 
Pachyrhizodus  Dixon,  Loomis,  1. 
Pachyrhizodus  Agassiz,  Hay,  10. 
caninus  Cope,  Hay,  10. 
caninus  Cope,  Loomis,  1. 
caninus  Cope,  Stewart,  1. 
curvatus  n.  sp.,  Loomis,  1. 
ferox  Stewart,  Loomis,  1. 
latimentum  Cope,  Loomis,  1. 
latimentum?   Cope,    Stewart,    1. 
leptognathus  Stewart,  Loomis,  1. 
leptognathus  Stewart,  Stewart,  1. 
leptopsis  Cope,  Hay,  10. 
leptopsis  Cope,  Loomis,  1. 
leptopsis  Cope.  Stewart,  1. 
minimus    Stewart,    Stewart,    1. 
sheari  Cope,  Loomis,  1. 
velox  Stewart,  Stewart,  1. 
Palaeacmaea  irregularis  n.  sp.,  Raymond 
(P.  E.),  7. 
Palsearctomys  n.  gen.,  Douglass,  8. 
macrorhinus  n.  sp.,  Douglass,  8. 
montanus  n.  sp.,  Douglass,  8. 
Palseobolus    n.    subgen.,    Matthew     (G. 
F.).  2,   20. 
bretonensis,    Matthew    (G.    F.),    2, 
20. 
Palseochaeta  devonica  nov.,  Clarke,  18. 
Palaeohatteria  Credner,  Osborn,   19. 
Palaeocorystes        harveyi        Woodward, 
Whiteaves,  12. 
Pala?odictyon  magnum  laxum  n.  subsp., 
Ulrich,  *4. 
singulare  Heer,  Ulrich,  4. 
Palseodictyota  n.  gen.,  Whitfield,  5. 
ramulosa  Spencer  sp..  Whitfield,  5. 
Palaeolagus    Leidy,    Matthew    (W.    D. ), 
6. 
?  agapetillus  Cope,   Matthew    (W. 
D.),  6. 
