658 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Diplograptus      longicaudatus      n.      sp., 
Ruedemann,  8. 
Diplomoceras    notabile    n.    sp.,     Whit- 
eaves,  12. 
Diploneis    microtatos    var.    christianii 
Cleve,  Boyer,   1. 
Diplophyllurn  Hall,  Grabau.  1. 
caespitosum  Hall,  Grabau,   1. 
caespitosum  Hall,  Clarke  and  Rue- 
demann, 1. 
Diploria   labyrinthiformis    (Linn.)    em- 
end Esper,  Vaughan,  2. 
Diplotrypa  limitaris  Ulr.,  Sardeson,  3. 
Diplurus  Newberry,  Eastman,  20. 
longicaudatus      Newberry.      East- 
man, 20. 
Dipoides  Jager,  Matthew  and  Gidley,  1. 
tortus   (Leidy),  Matthew  and  Gid- 
ley, 1. 
Discina  concordensis  n.   sp..   Sardeson, 
9. 
Discinisca  lugubris  Conrad,  Dall,  8. 
lugubris   (Conrad),  Martin,  6. 
Discinocaris,  Clarke,  8. 
Discohelix  californicus  n.  sp..  Weaver, 
1. 
Discorbina  Parker  and  Jones,  Bagg,  6. 
allomorphinoides     (Reuss),     Bagg, 
9. 
bertheloti    (d'Orbigny),  Bagg,   1. 
orbicularis    (Terquem),   Bagg,   6. 
turbo   (d'Orbigny),  Bagg,  1. 
Discosaurus  Leidy,  Williston,  14. 
Discosparsa  varians,  n.  sp.,  Ulrich,  2. 
Discotropites  n.  gen.,  Hyatt  and  Smith, 
1. 
sandlingensis    Hauer,    Hyatt    and 
Smith,   1. 
Dissacus    saurognathus    Wortman,    Os- 
born,   36. 
Distephanus    crux    (Ehrenberg),    Mar- 
tin, 8. 
speculum    (Ehrenberg),  Martin,  8. 
Ditypodon  Sandberger,  Dall,  8. 
Divaricella  von  Martens,  Dall,  8. 
section  Bourdotia  Dall,  Dall,  8. 
section  Divaricella  s.  s.,  Dall,  8. 
section    Pompholigina    Dall,    Dall, 
8. 
chipolana  n.  sp.,  Dall,  8. 
compsa  n.  sp.,  Dall,  8. 
dentata  Wood,  Dall,  8. 
quadrisulcata  Orbigny,  Dall,  8. 
quadrisulcata    (d'Orbigny),  Glenn, 
6. 
Dolatocrinus  Lyon,  Wood    (Elvira),   3. 
amplus?  M.  &  G.,  Rowley,  Greene, 
10. 
aplatus  M.  &  G..   Rowley,  Greene, 
8. 
arrosus?  M.  &  G.,  Rowley,  Greene, 
8. 
arrosus     var.     cognatus     n.     var., 
Rowley,  Greene,  8. 
Paleontology — Continued. 
Genera  and  species  described — Continued. 
Dolatocrinus  aspratilis  M.  &  G.,   Row- 
ley, Greene,  6. 
asterias  n.  sp.,  Wood    (Elvira  l.  ?,. 
caelatus  M.  &  G.,   Rowley,   Greene, 
11. 
charlestownensis  M.  &  G.,  Rowley, 
Greene.    10. 
charlestownensis   Miller   and    Cur 
ley,  Wood   (Elvira),  3. 
corbuliformis      n.      sp.,      Rowley. 
Greene,  10. 
corporosus?     M.     &     G..     Rowley, 
Greene.    11. 
corporosus  var.   concinnus  n.   var., 
Rowley,   Greene,   10. 
corporosus  var.  decoratus  n.  var., 
Rowley,  Greene,  10. 
costatus  n.  sp..  Wood   (Elvira),  3. 
curriei  n.  sp.,  Rowley,  Greene.  !>. 
elegantulus    n.  sp.,  Rowley,  Greene, 
10. 
excavatus    W.    and    Sp.,    Rowley, 
Greene,  14. 
excavatus  Wachsmuth  and  Spring- 
er, Wood  (Elvira),  3. 
excavatus  W.  &  S.,  Rowley,  Greene, 
8. 
excavatus?    W.    and    Sp.,    Rowley, 
Greene,  9. 
excavatus  var.  incarinatus  n.  var., 
Rowley,  Greene,  7. 
fungiferus  n.  sp.,  Rowley,  Greene, 
8. 
greenei   M.   &  G.,   Rowley,   Greene, 
11. 
greenei   Miller  and   Gurley,    Wood 
(Elvira),  3. 
hammelli  Miller  and  Gurley,  Wood 
(Elvira),  3. 
major    Wachsmuth    and    Springer, 
Wood   (Elvira  I.  3. 
marshi  Lyon,  Rowley,  Greene,  11. 
multibrachiatus     n.     sp.,     Rowley, 
Greene,  9. 
multinodosus      n.      sp..      Rowley, 
Greene,    10. 
nodosus  M.  &  G.,  Rowley,  Greene, 
11. 
noduliferus  n.  sp.,  Rowley,  Greene, 
9. 
ornatus  Meek,  Wood  (Elvira),  3. 
pernodosus  n.  sp.,  Rowley,  Greene, 
7. 
preciosus  M.  &  G.,  Rowley,  Greene. 
10. 
pulchellus      M.      &      G.,      Rowley, 
Greene,  6. 
salebrosus      Miller      and      Gmh\v. 
Wood    (Elvira),  3. 
spinosus  M.  &  <;..  Rowley,  Greene, 
11. 
springeri    n.    sp.,    Rowley,    Greene. 
8. 
triadactylus     Barris,     Wood     (El- 
vira), 3. 
