716 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Sphaerocystites  globularis  ovalis  n.  var., 
Schuchert,  11. 
multifasciatus  Hall,  Schuchert,  11. 
Splnerophthalmus    alatus    Boeck,    Mat 
thew   (G.  P.).,  20. 
fietcheri   n.   sp.,   Matthew    (G.    F. ) . 
9,   20. 
Sphenia  dubia  (H.  C.  Lea),  Glenn,  G. 
Spheniopsis  Sandberger,  Dall,  8. 
americana  n.  sp.,  Dall,  8. 
Sphenodictya  cornigera  n.  gen.  and  sp.. 
Ilerzer,   3. 
Sphenodiscus  Meek,  Hyatt.  1. 
beecheri  n.  sp.,  Hyatt,  1. 
lenticularis    (Owen),    Hyatt.   1. 
lenticularis    var.    mississippiensis. 
Hyatt,  1. 
lenticularis  var.   splendens,  Hyatt, 
1. 
lobatus   (Tuomey),  Hyatt,  1. 
pleurisepta   Conrad.    Lasswitz,   1. 
pleurisepta   (Conrad),  Hyatt,  1. 
stantoni  n.  sp.,  Hyatt,  1. 
Sphenodon  Gtinther,  Osborn,  19. 
Sphenolepidium  oregonense  n.  sp..  Fon- 
taine,  1. 
sternbergianum     (Dunker)      Heer, 
Fontaine.   '■'>. 
sternbergianum    densifoliuin    Fon- 
taine, Fontaine.  5. 
Sphenophyllum  emarginatum  minor  D. 
W..  White   (I).  >.  10. 
Sphenopteridiuni  sp.,  White  (D. ),  18. 
Sphenopteris     filicula     (l)n.)      D.     W., 
White    (D.),    18. 
hoeninghausii.  White   (I). ),   19. 
Sphenotus   cylindricus    (Win.),   Weller, 
1. 
Sphyrna    prisca    Agassiz,    Eastman,    1, 
is. 
Spiloblattina,  Sellards,  8. 
maledicta,  Sellards.  8. 
Spirifer.  Sowerby,  Beede,  1. 
Spirifer  Sowerby,  Grabau,  1. 
acuminatus  (Conrad),  Kindle,  1. 
arctisegmentum   Hall,   Kindle,   1. 
arenosus    (Con.),   Weller,  G. 
audaculus   (Conrad),  Kindle,  1. 
audaculus    (Con.)?,    Weller,    G. 
boonensis  Swallow?,  Girty.  3. 
byrnesi  Nettleroth,  Kindle.  1. 
cameratns  Morton.  Beede,   1. 
cameratns  Morton,  Girty,  3. 
centronatns  Winchell,  Girty,  3. 
centronatns  Win.,   Weller,   2. 
concinnns   Hall,   Shinier.   5. 
concinnus  Hall,  Weller.  G. 
corallinensis  Grabau,  Grabau,  9. 
crispus     (Hisinger)     Hall,    Clarke 
and  Rnedemann,  1. 
crispus    (Hisinger),   Grabau,   1. 
crispns  Hisinger  182G,   Beecher,  1. 
var.  corallinensis  Grabau,  Grabau, 
1. 
Paleontology— Con  tinned . 
Genera  and  species  described — Continued. 
Spirifer  var.  simplex  Hall  1879,  Beech- 
er.   1. 
(Reticnlaria)   crispus  var.  simplex 
Hall,  Kindle  and  Breger,  1. 
cyclopterus  Hall,   Shimer,  5. 
cyclopterus  Hall,  Weller,  6. 
davisi  Nettleroth,  Kindle.   1. 
_  divaricatus   Hall,   Kindle.    1. 
duodenarins   (Hall),  Kindle,  1. 
eriensis   Grabau,   Grabau,   1. 
eriensis   Grabau,   Schuchert,   4. 
eriensis  Grabau  var.,  Grabau,  9. 
fimbriatus   Conrad,   mut.   pygmaeus 
nov.,   Loomis,  4. 
fimbriatus  Conrad,   mut.   simplicis- 
simus  nov.,  Loomis,  4. 
foggi   Nettleroth.   Kindle  and   Bre- 
ger, 1. 
fornacula  Hall,  Kindle,  1. 
granulosus     Conrad,     mut.     pluto 
Clarke,   Loomis,  4. 
granulosus   (Con.),  Kindle,  1. 
gregarius  Clapp,  Kindle,  1. 
var.  greeni  n.  var.,  Kindle,  1. 
grieri  Hall,  Kindle,  1. 
iowensis  Owen,  Kindle,  1. 
lateralis,    var.    delicatus,    n.    var., 
(Rowley);  Greene,  2. 
macconathei  Nettleroth,  Kindle,  1. 
macropleurus   (Con.),  Weller,  G. 
macrothyris  Hall,  Weller,  6. 
macrus  Hall.  Kindle,  1. 
manni  Hall,  Kindle,  1. 
marionensis  Shumard,  Weller,  2. 
marcyi   Hall,   mut.   pygmseus   nov., 
Loomis,  4. 
medialis  Hall,  mut.  pygma?us  nov., 
Loomis,  4. 
modestus    corallinensis     (Grabau), 
Schuchert,  4. 
mucronatus  Conrad,  Raymond    (P. 
E.),  3,  4. 
mucronatus  var.  arkonensis  n.  var.. 
Shimer  and  Grabau,  1. 
mucronatus    Conrad,    mut.    hecate 
Clarke,  Loomis,  4. 
mucronatus    var.    thedfordensis    n. 
var.,  Shimer  and  Gfrabau,  1. 
murchisoni    Castelnau,    Shimer,    5. 
murchisoni  Castelnau,  Weller,  6. 
nearpassi  n.  sp.,  Weller,  6. 
niagarensis  Conrad,  Grabau,   1. 
nobilis  Barrande,  Kindle  and  Bre- 
ger, 1. 
octocostatus  Hall,  Weller,  6. 
peculiaris  Shumard?,  Girty,  3. 
peculiaris   Shum.?   Weller,   2. 
pennatus   (Atwater),  Kindle,  1. 
perlamellosus  Hall,  Weller,  G. 
pikensis  n.  sp.,  Rowley,  2. 
radiatus      Sowerby,      Kindle      and 
Breger,  1. 
radiatus  Sowerby  1825,  Beecher,  1. 
radiatus  Sowerby,  (irabau,  1. 
rockymontanus    Marcou,    Girty,    3. 
