704 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Porites   astreoides    Lamarck,    Vaughan, 
2. 
porites    (Pallas),   Vaughan,   2. 
Porodiscus    concentricus     (Ehrenberg), 
Martin,  S. 
Poromya  .iamaicensis  n.  sp.,  Dall,  8. 
inississippiensis    Meyer    and    Aid- 
rich,  Dall,  8. 
Porthochelys  laticeps  n.  gen.  et  sp.,  Wil- 
liston,  3. 
browni  n.  sp..  Hay,  24. 
laticeps  Williston,  Hay,  24. 
Portlandia  arctica  Gray,  Sears,  1. 
Portheus  Cope,  Loomis.  1. 
molossus  Cope,  Osborn,  35. 
mollosus,    Sternberg,    5. 
Posidonia  Bronn,  Clarke,  19. 
attica  Williams  (so.).  Clarke.  19. 
mesacostalis     Williams     (sp.), 
Clarke.  19. 
venusta  Miinster,   var.   nitidula  n. 
var.,  Clarke,   19. 
Posidoniella  pertenuis  Beede?,  Girty,  :*>. 
Posidonomya  ?    pertenuis  Beede,  Beede, 
1. 
?  recurva  Beede,  Beede,  1. 
Potamides  tenuis  Gabb,  Whiteaves,  12. 
rotamogetophyllum   n.   gen.,    Fontaine, 
5. 
vernonense  n.  sp.,  Fontaine,   ~>. 
Potamotherium    E.    Geoffroy,    Matthew 
and  Gidley,  1. 
lacota   n.    sp.,    Matthew,    Matthew 
and  Gidley.  1. 
Poterioceras    sauridens    n.    sp.,    Clarke 
and  Ruedemann,  1. 
sp.,  Clarke  and  Ruedemann,   1. 
Prfficardium  Barrande,   Clarke,   19. 
.duplicatum  Mtinster   (sp.),  Clarke, 
19. 
melletes  n.  sp.,  Clarke,  19. 
multicostatum  n.  sp.,  Clarke,  19. 
vetustum  Hall,  Clarke,  19. 
Prasopora  ?      hospitalis       (Nicholson), 
Nickles,  6. 
patera  n.  sp.,  Ulrich  and  Bassler,  2. 
patera  Ulrich  and  Bassler,  Hayes 
and  Ulrich,  1. 
simulatrix  Ulrich.  Weller,  6. 
simulatrix   Ulrich.   Nickles,   6. 
simulatrix  Uh\,   Sardeson,  3. 
simulatrix    var.    orientalis    Ulrich, 
Ruedemann,  2. 
Preptoceras   sinclairi   n.    gen.    and   sp., 
Furlong,  2. 
Premnophyllum  trigonum  Vel.,  Hollick, 
11. 
Prestwichia  randalli  n.  sp.,  Beecher,  5. 
signata  n.  sp.,  Beecher,  10. 
Priene  H.  &  A.  Adams,  Arnold,  2. 
Primitia    frostburgensis    n.    sp.,    Jones 
(T.   R.),    4. 
latimargina.ta     n.     sp.,     Raymond 
(P.  E.),  7. 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Primitia    minuta?     (Eichwald),    Jones 
(T.  R.),  4. 
mundula  var.  jonesi  n.  var.,  Ruede- 
mann, 2. 
sp.,  Jones    (T.   R.),  4. 
Prionastraea     vaughani,      Gregory, 
Vaughan,  7. 
Prionoceras?  Hyatt,   Smith    (J.   P.),   3. 
?    andrewsi  tWinchell,    Smith     (J. 
P.),  3. 
?  brownense  Miller,  Smith   (J.  P.), 
3. 
?    ohioense    Winchell,    Smith     (J. 
P.),  3. 
Prionocyclus    macombi    Meek,    Johnson 
(D.  W.),  5. 
wyomingensis   Meek,   Johnson    (D. 
W.),  5. 
n.  sp.,  Johnson  (D.  W.),  5. 
Prionolobus  Waagen,  Hyatt  and  Smith, 
1. 
Prionotropis  branneri  n.  sp.,  Anderson, 
3. 
woolgari    Mantell    (sp.),    Johnson 
(D.  W.),  5. 
Priscodelphinus?   crassangulum    n.    sp., 
Case,  9. 
gabbi  Cope,  Case,  9. 
grandaevus  Leidy,  Case,  9. 
lacertosus  Cope,  Case,  9. 
ruschenbergeri  Cope,  Case,   9. 
ura>us  Cope,  Case,  9. 
Prismatophyllum       insequalis       (Hall), 
Weller,  6. 
Prismopora  serrata  Meek,  Girty,  3. 
triangulata  White,   Girty,   3. 
sp.,  Girty,  3. 
Proamphicyon  nebrascensis  n.  gen.  and 
sp.,  Hatcher,  10. 
Proarcestes     Mojsisovics,     Hyatt     and 
Smith,  1. 
Probaena  n.  gen.,   Hay,  8. 
sculpta  n.   sp.,  Hay,  9. 
Procamelus,  Matthew   (W.  D.),   15. 
Procamelus  Leidy,  Matthew  (W.  D.),2. 
fissidens  Cope,  Matthew    (W.   D.), 
2. 
lacustris  n.  sp.,  Douglass,  1. 
madisonius  n.  sp.,  Douglass,  1. 
robustus  Leidy,  Matthew   (W.  D.), 
2. 
Prochasma  Beushausen,  Clarke,  19. 
Proclydonautilus     Mojsisovics,      Hyatt 
and  Smith.  1. 
Proclydonautilus     Mojsisovics,      Smith 
(J.  P.),  5. 
triadicus    Mojsisovics,     Smith     (J. 
P),  5. 
triadicus    Mojsisovics,    Hyatt    and 
Smith,  1. 
Procyonidae,  Matthew    (W.   D.),   19. 
Prodophoenus  Wortman  and   Matthew, 
Wortman,  2. 
Prodromites   Smith   and   Weller,    Smith 
'(J.  P.),  3. 
