678 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Lunatia     marylandica     Conrad.     Clark 
and  Martin.  2. 
Lunulicardium  Minister.  Clarke.  19. 
(Prochasma)      absegmen     n.      sp., 
Clarke,  19. 
(Pinnopsis)    accola  n.  sp..  Clarke, 
19. 
(Pinnopsis)      aeutirostrum      Hall, 
Clarke,  19. 
beushauseni  n.  sp..  Clarke.  19. 
(Prochasma)     bickense    Ilolzapfel, 
Clarke,  19. 
clymenise,  Clarke,   17. 
(Chsenocardiola)    clymenise  n.   sp., 
Clarke,  19. 
encrinitum  n.   sp..  Clarke,   19. 
(Prochasma)   enode  n.  sp..  Clarke, 
19. 
(Chsenocardiola)     eriense     n.     sp., 
Clarke,  19. 
flnitimum  n.  sp.,  Clarke,  19. 
fragile  Hal!.  Wood   (Elvira).   1. 
(Chsenocardiola)    furcatum    n.  sp.. 
Clarke,  19. 
hemicardioides,   Clarke,    17. 
(Chsenocardiola)        hemicardioides 
n.   sp.,   Clarke.    1!). 
(Pinnopsis)    libum  n.   sp.,   Clarke, 
10. 
miilleri,   Clarke,   17. 
(Pinnopsis)   ornatum  Hall,  Clarke, 
19. 
(Prochasma)     parunculus    n.     sp., 
Clarke,  19. 
pilosum  n.  sp.,  Clarke,  19. 
sodale  n.  sp.,  Clarke,  19. 
suppar  n.  sp..  Clarke,  19. 
?   (Opisthocoelus?)    transversale  n. 
sp.,  Clarke,   1!>. 
velatum  n.  sp.,  Clarke,  19. 
(Pinnopsis)      wiscoyense     n.     sp., 
Clarke.  11). 
n.  sp.,  Clarke,  19. 
n.  sp.  ?,  Clarke,  19. 
Lunulites  reversa  n.  sp.,  Ulrich,  2. 
Lutra   pristina   n.    sp.,    Matthew,    Mat- 
thew and  Gidley,  1. 
Luzonia  Ball   and   Smith.   Dall,  8. 
Lycopodites  comosus  Dn.,  White   (D.), 
18. 
?  montanensis  n.  sp.,  Fontaine.  4. 
Lyginopteris  oldhamia,  White  (D. ),  19. 
Lygodiuin    kaulfusii    Heer,    Knowlton, 
14. 
Lyonsia  Turton,  Arnold,  2. 
Lyonsia  Turton,  Dall,  8. 
section  Allogramma  Dall,  Dall,  8. 
section  Philippina  Dall,  Dall,  8. 
acuta  n.  sp.,  Dall,  8. 
arenosa  Morch,  Sears,  1. 
californica   Conrad,   Arnold,   2. 
Lyria  nestor  n.  sub-sp.,  Casey,  4. 
Lyriocrinus?  beecheri    n.    sp.,    Hudson, 
1. 
dactylus  Hall,  Grabau,  1. 
Paleontology — Continued. 
Genera  and  species  described — Continued. 
Lyriopecten  Hall,  Grabau,  1. 
orbiculoides  nom.  nov.,  Grabau,   1. 
Lyrosurcula  n.  gen.,  Casey,  5. 
acuta  n.  sp.,  Casey,  5. 
elegans  n.  sp.,  Casey,  5. 
obsoleta  n.  sp.,  Casey,  5. 
Lysis  suciensis   Whiteaves,   Whiteaves, 
12. 
Lysorophus    tricarinatus    Cope,    Broili, 
o 
tricarinatus,  Case,  2. 
Lytoceras   (Gabbioceras)   angulatum  n-. 
sp.,  Anderson,  3. 
argonautarum  n.   sp.,  Anderson,  3. 
batesi    (Trask)    Gabb,  Anderson,  3. 
(Tetragonites)    cala    (?)    (Forbes) 
Slolicza,  Anderson,  3. 
(Gaudryceras)    denmanense,  Whit- 
eaves, 2. 
rel.  duvalianum  d'Orb.,  Anderson, 
3. 
(Tetragonites)   jacksonense  n.  sp., 
Anderson,  3. 
(Gaudryceras)    kayei    Forbes,    An- 
derson, 3. 
(Gaudryceras)    sacya   Forbes,   An- 
derson, 3. 
Lytoceratoidea,  Hyatt  and  Smith,  1. 
Lytoloma  Cope,  Wieland,  7. 
angusta  Cope,  Wieland,  7. 
(Euclastes)     platyops    Cope,    Wie- 
land,  7. 
Machserodus?    ischyrus    n.    sp.,    Merri- 
am,  16. 
Maclurea   magna   Le    Sueur,    Raymond 
(P.  E.),  1. 
Macoma  Leach,  Arnold,  2. 
baltica  Linn.,  Sears,  1. 
calcarea  Gmelin,  Arnold,  2. 
indentata  Carpenter,  Arnold,  2. 
inquinata  Deshayes,  Arnold,  2. 
lenis  (Conrad),  Glenn,  G. 
marylandica  n.  sp.,  Glenn,  G. 
nasuta  Conrad,  Arnold,  2. 
nasuta    Conrad    var.    kelseyi    Dall, 
Arnold,  2. 
secta  Conrad,  Arnold,  2. 
yoldiformis  Carpenter,  Arnold,  2. 
Macridiscus  Dall,  Dall,  8. 
Macrocallista  Meek,  Dall,  8. 
section  Chionella  Cossmann,  Dall, 
8. 
section  Macrocallista  s.  s.,  Dall,  8. 
acuminata  n.  sp.,  Dall,  8. 
albaria  Say,  Dall,  8. 
(Chionella?)    gilberti   n.   sp.,   Dall, 
10. 
(Chionella)    maculata  Linne,  Dall, 
8. 
marylandica  (Conrad),  Glenn,  G. 
(Chionella)     marylandica    Conrad, 
Dall,  8.  < 
nimbosa  Solander,  Dall,  8. 
pittsburgensis  Dall,  Dall,  8. 
reposta  Conrad,  Dall,  8. 
(Chionella)  sp.,  Dall,  10. 
