•EEKs.j PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1901. 127 
Paleontology— Continued. 
General — Continued. 
Origin of the Antarctic faunas and floras, 
Ortrnann, 576. 
Origin of the mammals, Kingsley, 443. 
Paleontological speculations, Gratacap, 315 
and 316. 
Phylogeny of the primates, Brown, 83. 
Problem of the Monticuliporoidea I, Sarde- 
son, 671. 
Problem of the Monticuliporoidea, II, Sarde- 
son, 672. 
Progress of vertebrate poleontology in Amer- 
ica, Osborn, 578. 
Recent zoopaleontology, Osborn, 579 and 581. 
Reef structures in the Clinton and Niagara 
strata, Sarle, 678. 
Relationships of the Arthrognathi, Dean, 229. 
Revision of American Eocene primates and 
of the Myxodectidae, Osborn, 584. 
Review of recent papers on Bahaman corals, 
Vaughan, 768. 
Shells of the marl deposits of Aroostook 
County, Maine, Nylander, 571. 
Structure of the manus in Brontosaurus, 347. 
Studies in evolution, Beecher, 51. 
Studies in fossil botany, Scott, 683. 
Genera and specie*, described. 
Acidaspis obsoleta n. sp., van Ingen, 763. 
quinquespinosa Salter-Lake, van Ingen, 
763. 
Acrocrinus cassedayi Lyon, Rowley, Greene, 
320. 
cassedayi var. charlestownensis, n. var. 
(Rowley), Greene, 320. 
depressus n. sp. (Rowley), Greene, 320. 
wachmuthi n. sp., Rowley, 658. 
Acrophyllum regosum n. sp., Greene, 319. 
Acrothele avia n. sp., Matthew, 530. 
proavia n. sp., Matthew, 530. 
Actinopteria boydi (Conrad), Kindle, 442. 
Aechmina Jones and Holl, Grabau, 306. 
spinosa (Hall), Grabau, 306. 
Aeluthorium bicuspis n. sp., Wortman 863. 
latideus Marsh, Wortman, 863. 
Aetobatis Muller and Henle, Case, 251. 
arcuatus Agassiz, Case, 251. 
Agaricia Lamarck 1801, Vaughan, 766. 
agaricites (Linnaeus), Vaughan, 766. 
fragilis (Dana), Vaughan, 766. 
Agelacrinites beecheri n. sp., Clarke, 146. 
buttsi n. sp., Clarke, 146. 
Agoniatities expansus, Clarke, 145. 
Agriochoerus maximus n. sp., Douglass, 234a. 
minimus n. sp., Douglass, 234a. 
Alasmidonta Say, Letson, 493. 
calceola (Lea) Simpson, Letson, 493. 
truncata (Wright) Simpson, Letson, 493. 
Alisina barnetti n. sp., Kindle, 442. 
barnetti var. elongata n. var., Kindle, 442. 
Alveoporo regularis Dimcan, Vaughan, 766. 
Amboeoelia nana Grabau, Wood, 855. 
umbonata (Conrad), Kindle, 442. 
Ammonitella yatesi praecursor, Stanton, 727. 
Amuicola Gould and Haldeman, Letson, 493. 
letsoni Walker, Letson, 493. 
limosa (Say) Hald., Letson, 493. 
Paleontology— Continued. 
Genera and species described — Continued. 
Amnicola protia Gould, Stearns, 727a. 
Amnigenia catskillensis Vanuxem sp., Clarke, 
147. 
Amphicyon americanus, Wortman, 860. 
Amphistegina lessonii d'Orbigny, Bagg, 35. 
Amplexopora multispinosa n. sp., Cumings, 
180. 
Amplexus radigerus n. sp., Rowley, 658. 
vermicularis n. sp., Rowley, 658. 
Ampyx niagarensis n. sp., van Ingen, 763. 
(Lonchodomas) hastatus n. sp., Ruede- 
mann, 660. 
Anastrophia Hall, Grabau, 306. 
brevirostris Hall, Grabau, 306. 
internascens Hall 1879, Beecher, 51. 
interplicata (Hall), Grabau, 306. 
Anolotichia impolita Ulr., Sardeson, 671. 
Anomalina ammonoides (Reuss), Bagg, 35. 
grosserugosa (Gumbel), Bagg, 35. 
Anomia marylandica n. sp., Clark and Mar- 
tin, 141. 
megeei Clark, Clark and Martin, 141. 
Anoplotheca Sandberger, Grabau, 306. 
hemispherica (Sowerby), Grabau, 306. 
plicatula (Hall), Grabau, 306. 
Aparchites minutissimus var. robustus n. var., 
Ruedemann, 660. 
Aporrhais potomacensis n. sp., Clark and 
Martin, 141. 
Aptychopsis terranovicus, Matthew, 529. 
Araucarioxylon prosseri n. sp., Penhallow, 
604. 
virginianum, Knowlton, 454. 
Arges arkansanus n. sp., van Ingen, 763. 
phylctenoides (Green) 1837, van Ingen, 
763. 
sp., van Ingen, 763. 
Arretotherium acridens n. gen. et sp., Doug- 
lass, 234a. 
Arthroclema armatum Ulr., Sardeson, 672. 
Arthrophycus Hall, Grabau, 306. 
harlani (Conrad), Grabau, 306. 
Astarte marylandica Clark, Clark and Mar- 
tin, 141. 
Athyris crassicardinalis White, Weller, 804. 
fultonensis (Swallow), Kindle, 442. 
spiriferoides (Eaton), Kindle, 442. 
Atrypa Dalman, Grabau, 306. 
nodostriata Hall, Grabau, 306. 
reticularis Linnaeus 1767, Beecher, 51. 
reticularis (Linnaeus), Grabau, 306. 
reticularis (Linnaeus), Kindle, 442. 
reticularis var. ellipsoida (Nettleroth), 
Kindle, 442. 
rugosa Hall, Grabau, 306. 
spinosa Hall, Kindle, 442. 
Atrypina disparilis Hall 1852, Beecher, 51. 
Aulopora amplexa n. sp., Rowley, 658. 
longi n. sp., Rowley, 658. 
Aviculopecten crassicostata H. and W., Kin- 
dle, 442. 
exactus Hall, Kindle, 442. 
fascicuiatus Hall, Kindle, 442. 
iowensis Miller, Weller, 804. 
nebrascensis n. sp., Beede, 55. 
