706 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Protocalyptraea  Clarke,  Clarke,  19. 
marshalli  Clarke,  Clarke,  19. 
styliophila  Clarke,  Clarke.  19'. 
Protocardia   Beyrich,   Arnold,   2. 
centifilosa  Carpenter,  Arnold,  2. 
lenis  Conrad,  Clark  and  Martin,  2. 
salinaensis   Meek,   Jones    (A.   W.). 
o 
Protoceras,  Matthew  (W.  D.),  22. 
Protohippus  Leidy,  Gidley,  5. 
cumminsii   (Cope),  Gidley,  1. 
phlegon  (Hay),  Gidley,  1. 
Protolabis,  Matthew  (W.  D.),  15. 
Protolabis  Cope,  Matthew  (W.  D.),  2. 
angustidens    Cope,    Matthew     (W. 
D.),  2. 
heterodontus    Cope,    Matthew    (W. 
D.),  2. 
montanus  Douglass,  Matthew   (W. 
D.t.  2. 
montanus  n.  sp.,  Douglass,  1. 
Protolenus,  Matthew  (3.  F.),  27. 
Protomeryx,  Matthew   (W.  D.),  15. 
hallii,  Matthew   (W.  D.).  15. 
Protophyllocladus  n.  gen.,  Berry.  3. 
lanceolatus    (Knowlton),  Berry,  3. 
polyinorphus   (Lesq.),  Berry,  3. 
suhintegrifolius    (Lesq.),   Berry.    .".. 
subintegrifolius       (Lesq.)       Berry, 
Berry,  7. 
Protopteris  kellermaniana   n.   sp.,   Her- 
zer,  4. 
Protomeryx  Leidy,  Matthew  (W.  D.),  2. 
campester    n.    sp.,    Matthew     (W. 
D.),  2. 
Protonympha    salicifolia    nov.,    Clarke, 
18. 
Protophragmoceras     patronus     n.     sp., 
Clarke  and  Ruedemann,  1. 
Protopora  n.  gen.,  Greene,  12. 
Protorohippus  venticolus,  Osborn,  36. 
Protorthis    Hall    and    Clarke.    Walcott, 
12. 
billingsi  Hartt,  Walcott,  12. 
(Loperia)      dougaldensis      n.      sp., 
Walcott,  12. 
helena  n.  sp..  Walcott.  12. 
laevis  n.  sp..  Walcott,  12. 
latourensis  Matthew,   Walcott.   12. 
nautes  n.   sp.,  Walcott.   12. 
?  nunnebergensis   n.   sp.,   Walcott, 
12. 
quacoensis   Matthew,   Walcott,    12. 
spencei  n.  sp.,  Walcott,  12. 
wingi  n.  sp.,  Walcott,  12. 
sp.  und.,  Walcott,  12. 
Protorosaurus  v.  Meyer,  Osborn,  19. 
Protosphyraena  Leidy,  Loomis,  1. 
Protosphyrsena  Leidy,   Stewart,   1. 
bentoniana  Stewart,  Stewart,  1. 
dimidiata   (Cope),  Hay,  10. 
gigas  Stewart,  Stewart,  1. 
gladius  (Cope),  Hay,  10. 
nitida   (Cope),  Hay,  10. 
nitida  Cope,  Loomis,  1. 
Paleontology— Continued. 
Genera  and  si>ccics  described — Continued. 
Protosphyraena      obliquidens      n.      sp., 
Loomis,  1. 
penetrans  Cope,   Loomis,   1. 
penetrans  Cope,  Stewart,   1. 
perniciosa  (Cope),  Hay,  10. 
recurvirostris  Stewart,  Stewart,  1. 
sequax  n.  sp.,  Hay,  10. 
tenuis  n.  sp.,  Loomis,  1. 
tenuis  Loomis,  Hay,  10. 
ziphioides  (Cope),  Hay,  10. 
n.  sp.?,  Stewart,  1. 
Protospirialis  n.  gen.,  Clarke,  19. 
minutissima  Clarke,   Clarke,   19. 
Protostega,    Williston,    4. 
gigas  Cope,  Sternberg,  5. 
Protosurcula  n.  gen.,  Casey,  5. 
gabbi  Con.,  Casey,  5. 
.plenta  H.  &  A.,  Casey,  5. 
lenuirostris  n.  sp.,  Casey,  5. 
Trotothaca  Dall,  Dall,  8. 
grewingkii  n.  sp.,  Dall,  10. 
?  sp.,  Dall,  10. 
Prototomus  Cope,  Matthew  (W.  D.),  20. 
Protowarthia  cancellata  Hall  sp.,  Rue- 
demann, 2. 
cancellata   (Hall),  Weller,  6. 
rossi  n.  sp.,  Collie,  3. 
tenuissima  n.  sp.,  Collie,  3. 
Protozyga   exigua    Hall.   Ruedemann,   2. 
Protrachyceras  Mojsisovics,  Hyatt  and 
Smith,  1. 
Protrachyceras   Mojsisovics,    Smith    (J. 
P.),  5. 
Prunoides  n.  gen.,  Perkins,  13. 
l)iiis;cformis   (Lx.),  Perkins  13. 
seelyi  n.  sp.,  Terkins,  13,  17. 
Prunus?  merriami  n.  sp.,  Knowlton,  14. 
?  tufacea  n.  sp.,  Knowlton,  14. 
Psammobia     (Lamarck)    Bowditch,    Ar- 
nold, 2. 
(rsammobia)    edentula    Gabb,    Ar- 
nold, 2. 
gubernatoria  n.  sp.,  Glenn,  6. 
sp.  ?,   Ravn,   1. 
Psaronius,  Ilerzer,  1. 
junceus  n.  sp.,  Herzer,  -. 
vermiculus  n.   sp.,   Ilerzer,  4. 
Psephidia  Dall,  Dall,  8. 
Psephis  Carpenter,  Arnold,  2. 
salmonea  Carpenter,  Arnold,  2. 
tantilla  Carpenter,  Arnold,  2. 
Psephodus  Agassiz,  Branson,  1. 
acutus  n.  sp.,  Branson,  1. 
carbonarius  n.  sp.,  Branson,   1. 
legrandensis  n.  sp.,  Branson,   1. 
Pseudaspidoceras  n.  gen.,  Hyatt,  1. 
Pseudauliscus      spinosus      (Christian), 
Boyer,  1. 
Pseudobradypus   n.   gen.,   Matthew    (G. 
P.),  21. 
Pseudobradypus,  Matthew   (G.  F.),  30. 
unguifer     Dawson,     Matthew     (G. 
F.),  25,  30. 
Pseudocrinites  Pearce,  Schuchert,  11. 
abnormalis  n.  sp.,  Schuchert,  11. 
