726 
INDEX   TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Turbonilla    (Strioturbonilla)    siniilis  C. 
B.  Adams,  Arnold,  2. 
(Strioturbonilla)     stearnsii    D.    & 
B.,  n.  sp.,  Arnold,  2. 
(Pyrgiscus)    subcuspidata   Carpen- 
ter, Arnold,  2. 
(Pyrgiscus)    tenuicula    Gould,    Ar- 
nold, 2. 
(Strioturbonilla)    torquata    Gould, 
Arnold,  2. 
(Strioturbonilla)      torquata,     var. 
stylina  Carpenter,  Arnold,  2. 
(Lancea")      tridentata      Carpenter, 
Arnold,  2. 
Turrilepas  (  ?)  fllosa  n.  sp.,  Ruedemann, 
1. 
Turritella  Lamarck,  Arnold.  2. 
sequistriata  Conrad,  Martin  5. 
belevederei  Cragin,  Jones  (A.  W.), 
2# 
budaensis  n.  sp.,  Shattuck,  8. 
burkarti  n.  sp.,  Cragin,  2. 
conica  n.  sp.,  Weaver.  1. 
cooperi   Carpenter,   Arnold,   2. 
galisteoensis   n.    sp.,    Johnson    (D. 
W.),  5. 
humerosa  Conrad,  Clark  and  Mar- 
tin, 2. 
indenta  Conrad,  Martin,  5. 
jewettii  Carpenter,  Arnold,  2. 
mortoni  Conrad,  Clark  and  Martin, 
2. 
plebeia  Say,  Martin,  5. 
potomacensis    n.     sp.,     Clark    and 
Martin,  2. 
variabilis  Conrad,  Martin,  5. 
variabilis  var.,  Martin,  5. 
variabilis  var.  alticostata  Conrad, 
Martin,  5. 
variabilis   var.    cumberlandia   Con- 
rad, Martin,  5. 
variabilis     var.     exaltata     Conrad, 
Martin,  5. 
sp.  ?,   Brown    (T.   C),   1. 
Turrilites  brazoensis  F.   Roemer,  Lass- 
witz,  1. 
peramplus  n.  sp.,  Lasswitz,  1. 
wysogorskii  n.  sp.,   Lasswitz,   1. 
Tylocrinus  n.  gen.,  Wood  (Elvira),  3. 
novus  n.  sp.  Wood  (Elvira),  3. 
Typha  sp.,  Penballow,  4. 
Typhis  acuticosta  Conrad,  Martin,  5. 
Typopus  E.   Hitchcock,  Lull,  2. 
abnormis  E.  Hitchcock,  Lull,  2. 
gracilis  E.  Hitchcock,  Lull,  2. 
Tyrannosaurus    rex.    n.    gen.    and    sp., 
Osborn,  50. 
Uintacrinus  Grinnell,  Springer  (F.),  1. 
socialis  Grinnell,  Springer  (F. ),  1. 
socialis,  Schuchert,  8. 
socialis   Grinnell,    Hovey    (E.    O.), 
14. 
sp.,  Whiteaves,  15. 
Uintacyon  Leidy,  Wortman,  2. 
edax  Leidy,  Wortman,  2. 
Paleontology — Continued. 
Genera  and  species  described— Continued. 
Ulias  Cope,  Case,  9. 
moratus  Cope,  Case,  9. 
Ulmus  basicordata  n.  sp.,  Hollick,  10. 
californica?  Lesq.,  Knowlton,  14. 
newberryi  n.  sp.,  Knowlton,  14. 
speciosa  Newb.,  Knowlton,  14. 
Umbraculum     (Eosinica)     elevatum     n. 
sp.,  Aldrich,  3. 
Unicardium?  semirotundum  n.  sp.,  Cra- 
gin, 2. 
?  transversum  n.  sp.,  Cragin,  2. 
Uncinulus  mutabilis   (Hall),  Weller,  6. 
nucleolatus  (Hall),  Weller,  6. 
pyramidatus   (Hall),  Weller,  6. 
vellicatus  (Hall),  Weller,  6. 
Unio  Retzius,  Letson,  1. 
aesopiforinis  n.  sp.,  Whitfield,  6. 
aldrichi  White,  White  (C.  A.),  1. 
belliplicatus  Meek,  White   (C.  A.), 
1. 
brachyopisthus    White,    White    (C. 
A.),  1. 
browni  n.  sp.,  Whitfield,  6. 
crassidens  Lam.,  Wagner,  2. 
cretacollis  n.  sp.,  Maury,  1. 
cristonensis  Meek,  White    (C.   A.), 
1. 
douglassi  n.  sp.,  Stanton,  4. 
endlichi  White,  White  (C.  A.),  1. 
farri  n.  sp.,  Stanton,  4. 
felchii  White,  White  (C.  A.),  1. 
gibbosus  Barnes,  Lelson,  1. 
gonionotus  White,  White  (C.  A.),  1. 
goniambonatus    White,    White    (C. 
A.),  1. 
holmesianus  White,  White  (C.  A.), 
1. 
iridoides  White,  White   (C.  A.),  1. 
mecropisthus  White,  White  (C.  A.), 
1. 
nanaimoensis  n.  sp.,  Whiteaves,  1, 
12. 
nucalis   Meek   and   Hayden,   White 
(C.  A.),  1. 
percorrugata  n.  sp.,  Whitfield,  6. 
postbiblicata  n.  sp.,  Whitfield,  6. 
primevus  White,  White  (C.  A.),  1. 
priscus  Meek  and  Hayden?,   Stan- 
ton and  Hatcher,  1. 
priscus    var.    abbreviatus    n.    var., 
Staton,  Stanton  and  Hayden,  1. 
proavitus  White,  White  (C.  A.),  1. 
propheticus  White,  White  (C.  A.), 
1. 
retusoides  n.  sp.,  Whitfield,  6. 
senectus  White,  White   (C.  A.),  1. 
stantoni  n.  sp.,  White   (C.  A.),  1. 
stewardi  White,  White   (C.  A.),  1. 
supenawensis  n.  sp.,  Stanton,  Stan- 
ton and  Hatcher,  1. 
subspatulatus    Meek   and    Hayden, 
Stanton  and  Hatcher,  1. 
toxonotus  White,  White  (C.  A.),  1. 
?  trigoniaformis  n.  sp.,  Maury,  1. 
