FOR    THE    YEARS    1901-1905,  INCLUSIVE. 
671 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Hyolithes  centennialis  Barrett,   Weller, 
6. 
communis  Billings,   Sears,   1. 
danianus,  Matthew  (G.  F.),  7. 
exeellens  Bill.,  Matthew  (G.  F.),  1. 
excellens  Billings,  Sears,  1. 
gracilis,  Matthew  (G.  F.),  7. 
gracillimus,  Matthew   (G.  F.) ,  8. 
gracillimus   n.   mut..   Matthew    (G. 
F.),  7. 
impar  Ford,  Sears,  1. 
neapolis  Clarke,  Clarke,  19. 
princeps  Billings,  Sears,  1. 
princeps     forma     pingreei     Sears. 
Sears,  1. 
rhine  n.  sp.,  Ruedemanu,  2. 
rugosus  n.  sp.,  Matthew  (G.  F.),  1. 
searsi  Grabau,  Sears.  1. 
sericeus,  Matthew   (G.  F.)    7. 
cf.    tenuistriatus    Linrs.,    Matthew 
(G.  F.),  20. 
Hyopsodidae  Schlosser,  Loomis,  7. 
Hyopsodus  Leidy,  Loomis,  7. 
Hyopsodus  Leidy,  Osborn,  11. 
browni  n.  sp.,  Loomis,  7. 
(.Lemuravus)    distans    Marsh,    Os- 
born, 11. 
jacksoni  n.  sp.,  Loomis,  7. 
laticuneus  Cope,  Loomis,  7. 
lemoinianus  Cope,  Loomis,  7. 
lemoinianus  Cope,  Osborn,  11. 
marshi  n.  sp.,  Osborn,  11. 
minor  n.  sp.,  Loomis,  7. 
miticulus  Cope,  Loomis,  7. 
(Esthonyx)    ?  miticulus  Cope,  Os- 
born, 11. 
paulus,  Osborn,  11. 
powellianus  Cope,  Osborn.  11. 
powellianus  Cope,  Loomis,  7. 
simplex  n.  sp.,  Loomis,  7. 
uintensis  n.  sp.,  Osborn,  11. 
vicarius  Ccpe,  Osborn,  11. 
wortmani  n.  sp.,  Osborn,  11. 
wortmani  Osborn,  Loomis,  7. 
Hypertragulus,  Matthew  (W.  D.),  22. 
Hypertragulus  Cope,  Matthew  (W.  D.), 
7. 
sp.,  Sinclair,  G. 
Hyphantosoma  Dall,  Dall,  8. 
Hyphepus  E.  Hitchcock,  Lull,  2. 
fieldi  E.  Hitchcock,  Lull,  2. 
Hypisodus  Cope,  Matthew   (W.   D.),  2, 
7,  22. 
minimus  Cope,   Matthew    (W.   D.), 
7. 
Hypocetus  Lydekker,  Case,  9. 
mediatlanticus  (Cope),  Case,  9. 
Hypohippus  Leidy,  Gidley,  5. 
Hyrachyus,  Douglass,  8. 
?  priscus  n.  sp.,  Douglass,  8. 
Hyracodon  priscidens  n.  sp.,  Lambe,  17. 
sp.,  Matthew  (W.  D.),  9. 
Hysteroconcha  Fischer,  Dall,  8. 
Hystriospongia  ?  sp.,  Girty,  3. 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Icanotia  Stoliczka,  Dall,  8. 
Ichthycrinus  Conrad,  Grabau,  1. 
laevis  Conrad,  Grabau,  1. 
Icthyocrinus  magnaradialis  n.  sp.,  Wel- 
ler, G. 
schucherti  n.  sp.,  Talbot,  2. 
Ichthyodectes  Cope,  Loomis,  1. 
Ichthyodectes  Cope,  Stewart  1. 
acanthicus  Cope?,  Stewart,  1. 
anaides  Cope,  Hay,  10. 
anaides  Cope,  Loomis,  1. 
anaides  Cope,  Stewart,  1. 
cruentus  Hay,  Stewart,  1. 
ctenodon  Cope,  Loomis,  1. 
ctenodon  Cope,  Stewart,  1. 
hamatus  Cope,  Loomis,  1. 
hamatus  Cope,  Stewart,  1. 
multidentatus  Cope,  Hay,  10. 
multidentatus  Cope,  Loomis,  1. 
occidentalis  Leidy,  Loomis,  1. 
Ichthyoidichnites     acadiensis     n.      sp., 
Ami,  3,  28. 
Ichthyosaurus  Merriam  (J.  C),  G,  9. 
Ictops,  Douglass,  9. 
acutidens  n.  sp.,  Douglass,  4. 
acutidens   Douglass,   Matthew    (W. 
D.),  9. 
acutidens  Douglass,  Douglass,  9. 
didelphoides  Cope,  Douglass,  9. 
intermedins  n.  sp.,  Douglass,  9. 
major  n.  sp.,  Douglass,  9. 
montanus  n.  sp.,  Douglass,  9. 
tenuis  n.  sp.,  Douglass,  9. 
thomsoni  n.  sp.,  Matthew  (W.  D.), 
9. 
thompsoni  Matthew,  Douglass,  9. 
Idiophyllum  rotundifolium  Lesquereux, 
Sellards,  4. 
Idmonea    ?  expansa  n.  sp.,  TJlrich  and 
Bassler,  4. 
Igoceras  undata  (Win.),  Weller,  2. 
Illsenurus  Columbiana  n.  sp.,  Weller,  6. 
Illaenus  Dalman,  Grabau.  1. 
americanus  Billings,  Ruedemann,  2. 
armatus  Hall,  Kindle  and  Breger, 
1. 
bayfieldi    Billings,     Raymond     (P. 
E.),  5. 
erastusi  n.   sp.,   Raymond    (P.   E.), 
5. 
globosus    Billings,     Raymond     (P. 
E.),  5. 
indeterminatus   Walcott,   Raymond 
(P.  E.),  5. 
insignis   Hall,   Kindle   and   Breger, 
1. 
ioxus  Hall,  Kindle  and  Breger,  1. 
ioxus  Hall,  Grabau,  1. 
punctatus  n.  sp.,  Raymond  (P.  E.), 
5. 
sp.  indet.,  Whiteaves,  17. 
Illicium  lignitum  Lx.,  Perkins,  13. 
Ilyanassa?  (Paranassa)  porcina  (Say), 
Martin,  5, 
Incolaria  securiformis  Herz.,  Herzer,  4. 
