WEEKS.] 
PETROLOGY, AND MINERALOGY FOR L892-1900. 
173 
Paleontology— Con tin ued. 
Genera and species described — Continued. 
Alota n. gen., Matthew, 3770. 
flexilis n. sp., Matthew, 3770. 
Alvalonia Walcott, Matthew. 3789. 
plana, n. sp., Matthew, 3789. 
Alveinus Conrad, Dall, 1281. 
rotundus n. sp., Dall, 1281. 
Alveolites, James, 2881. 
Alveolites Lamarck, Lambe, 3374. 
glomeratus, Say, 4813. 
goldfussi Billings, Lambe, 3374. 
(?) granulosus, James, 2881. 
labechei Milne-Edwards and Haime, 
Lambe, 3374. 
niagarensis Romingei Lambe, 3374. 
squamosa Billings, Lambe, 3374. 
vallornm Meek, Lambe. 3374. 
Amalthea willcoxi n. sp., Dall, 1259. 
Amaradanse d. sp.. Seudder, 4900. 
powellii n. sp., Seudder, 4900. 
revocata n. sp., Seudder, 4900. 
sterllis n. sp., Seudder, 4900. 
veterata n. sp., Seudder, 1900. 
Amastrophia ? hemiplicata Hall sp., Winch- 
ell and Schuchert, 6319. 
var. rotunda n. var., Winchell and Schu- 
chert, 6319. 
? scofieidi n. sp., Winchell and Schuchert, 
6319. 
Amaura (Amauropsis?) i bigbeensis a. sp., 
Harris, 2310. 
Amauropsis bulbiformis, Sowerby, Berrick 
and Johnson, 2465. 
bulbiformis (Sow erby |, Stanton, 5191. 
jacksonensis q. sp., Harris, 231 1. 
meekana n. sp., Whitfield, 6097. 
perovata Con.. Harris, 2308. 
punctata, Whitfield, 6097. 
singleyi n. sp., Harris, 2307. 
utahensis, White, Herrick and Johnson, 
2465. 
utahensis White, Stanton, 5191. 
Amberleva dilleri n. sp., Stanton, 5199. 
Ambloctonus sinosus Cope, ( >sbom and Wort- 
man, 4180. 
Amblysiphonella i>rosseri Clarke, Clarke, 956. 
Ambocoelia Hall, Grabau, 2086. 
Aml.ocielia Hall, Hall and Clarke, 2261,2264. 
levicula n. sp., Uowlcy, 1677a. 
nana Grabau, Grabau, 2086. 
parva n. sp., Weller, 5994. 
praeumbona Hall, Grabau. 2086. 
spinosa n. sp., Clarke, 946. 
spinosa n. sp.,Hall and Clarke, 2261a, 2263. 
spinosa Clarke, Grabau, 2086. 
umbonata (Conrad), Grabau, 2086. 
var. nana, n. var., Grabau, 208(5, 2087. 
AmbonyehiaHall, emend Ulrich, Ulnch, 5539. 
affinisn. s[>., Ulrich, 5539. 
amygdalina Hall, Ulrich, 5539. 
attenuata, Whitfield, 6102. 
bellistriata Hall, Ulri< h, 5539. 
cincinnatiensis n. sp., Miller and Faber, 
3996. 
erecta, Whitfield, 6102. 
lamellosa, Whitfield, 6102. 
planistiiata Hall, Ulrich, 5539. 
Paleontology— Continued. 
Gt nt ra and species described— Continued. 
Ambonychia planistriata, Whitfield, 6102. 
Amelanchier similis Newb., Newberry, 4083. 
Ammodon leidyanum n. Ren. et sp., Marsh, 
3681. 
potens n. sp., Marsh, 3(581. 
(Elotherium) bathrodon, Marsh, 3681. 
Ammonites complexus, Whitfield, 6097. 
delawarensis, Whitfield, 6097. 
dentato-carinatus, Whitfield, 6097. 
telifer, Whitfield, 6097. 
vanuxemi, Whitfield, 6097. 
(Placentieeras) placenta, Whitfield, 6097. 
(Sphenodiscus) Lenticularis, Whitfield, 
6097. 
Ammosaurus, Marsh, 3701. 
Amnicola? cretacea n. sp., Stanton, 5206. 
omphalotropis Pilsbry n. sp., Dall, 1259. 
yatesiana n. sp.. Cooper, 1071. 
Ampheristocrinus Hall, Weller, 6002. 
dubius n. sp., Weller, 6002. 
Amphibamus, Case. 767. 
grandiceps Cope, Hay, 2388. 
Amphichaena Philippi, Dall, 1281. 
Amphiclina Laube, Hall and Clarke, 2261. 
Amphiclinodonta Bittner, Hall and Clarke, 
2264. 
Amphictis, Riggs, 4641. 
Amphicyrta inhsesa n. sp., Seudder, 4900. 
Amphidesma burnsi n. sp., Whitfield, 6101. 
subovata, Say, 4813. 
Amphigenia Hall Hall and Clarke, 2261a, 
2264. 
Amphihelia natchitochensis n. sp., Vaughan, 
5735. 
Amphipeltis paradoxus Salter. Matthew . 3768. 
Amphispongia oblonga Salt., Rauff, 1548. 
Amphistegina le&sonii, Bagg, 148. 
Amphitomella Bittner Hailand Clarke, 2264. 
Amphoracrinus Austin, Wachsmuth and 
Springer, 5765a. 
blari n sp., Miller and Gurley, 3999. 
divergens 1 Hall), Wachsmuth and 
Springer, 5765a. 
divergens (Hall), Keyes, 30(51. 
divergenc, Whitfield, 6098. 
inflatus, Whitfield, cons. 
jessiea' 1.. sp.. Miller and Gurley, 4001. 
sampson i n. pp., Miller and Gurley, 4000. 
sedaiiensis n. sp., Miller and Gurley, 3998. 
spinobrachiatus (Hall), W T achsmuth and 
Springer, 5765a. 
viminalis (Hall), Wachsmuth and 
Springer, 5765a. 
Amplexopora, Simpson, 4983. 
Amplexus Sowerby, Grabau, 2086. 
bicostatus n. sp., Miller, 3992. 
blairi Miller, Keyes, 3061. 
blairi n. sp., Miller, 3992. 
cinetutus n. sp., Miller, 3995. 
cornisuium n. sp., Miller, 3992. 
fragllis White and St. John, Keyes, 3061. 
hamiltonise Hail. Grabau, 2086. 
(?) intermittens Hall, Grabau, 2086. 
(?) rockfordensis n. sp., Miller and Gur- 
ley, 4003. 
