'EEK.S.] 
PETROLOGY, AND MINERALOGY EOR 1892-1900. 
177 
•aleontology— Continued. 
Sent ra and species described — Continued. 
Archseocidaris wortheni, Jackson, 2871. 
wortheni Hall, Keyes, 3061, 3077. 
Archseocrinus Wachsmuth and Springer, 
Weller, 6002. 
asperatus n. sp., Miller and Gurley, 3997c. 
depressus n. sp., Weller, 6002. 
knoxensis n. sp., Miller and Gurley, 3997d. 
parvus n. sp., Miller and Gurley, 3997c. 
peculiaris n. sp., Miller and Gurley, 3997c. 
Archseopteryx, Case, 769. 
Archscoscyphiaminganensis (Billings) Hinde, 
Rauff , 4548. 
Archelon ischyros, Wieband, 6128, 6136. 
marshi n. sp., Wieband, 6136. 
Archeocyathus profundus, James, 2893. 
Archeozoon, Dawson, 1448. 
Archicorys, Matthew, G. F., 3760. 
Archimedes, Simpson, 4983. 
owenanus Hall, Keyes, 3062. 
wortheni Hall, Keyes, 3062. 
sp., Girty, 2038. 
Archimedipora, Simpson, 4983. 
Archinacella n. gen., Ulrich and Scofield, 5541. 
cingulata n. sp., Ulrich and Scofield, 5541. 
deleta Sardeson sp., Ulrich and Scofield, 
5541. 
depressa n. sp., Ulrich and Scofield, 5541. 
instabilis Billings var. incurva, n. var., 
Ulrich and Scofield, 5541. 
perovalis Whitfield sp., Ulrich and Sco- 
field, 5541. 
powersi n. sp., Ulrich and Scofield, 5541. 
richmondensis n. sp., Ulrich and Sco- 
field, 5541. 
rotunda n. sp., Ulrich and Scofield, 5541. 
rugatina n. sp., Ulrich and Scofield, 5541. 
semicarinata n. sp., Ulrich and Scofield, 
5541. 
simulatrix n. sp., Ulrich and Scofield, 
5541. 
subrotunda n. sp., Ulrich and Scofield, 
5541. 
valida Sardeson sp., Ulrich and Scofield, 
5541. 
Architectonica annosa, Whitfield, 6097. 
Archiulus euphoberioides n. sp., Scudder, 
4897. 
lyelli n. sp., Scudder, 4597. 
xylobioides Scudder, Scudder, 4897. 
Arcta puncticostata, Ami, 82. 
Arctostaphylos elliptica n. sp., Knowlton, 
3255. 
Arenicolites Salter, Matthew, 3789. 
brevis? Matthew, 3789. 
Arethusina konineki, Beecher, 366. 
Arges consanguineus, Beecher, 366. 
wesenbergensis var. paulianus n. var., 
Clarke, 952. 
Arionellus levis n. sp., Walcott, 5816. 
sp. undet,, Walcott, 5816. 
Arissema cretacea n. sp., Lesquereux, 3470. 
(?) dubian. sp., Hollick, 2698. 
(?) mattewanense n. sp., Hollick, 2698. 
Aristerella n. gen., Ulrich, 5539. 
Bull. 189—02—12 
Paleontology— Continued. 
Genera and species described— Continued. 
AristereHa nitidula n. sp,, Ulrich, 5539. 
Aristolochia cordifolia Newb., Newberry, 
4083. 
Aristozoe Barrande, Grabau, 2092. 
canadensis n. sp., Whitfield, 6099. 
Arnioceras nevadanum, Hyatt, 2818. 
Arostichites linnsesefolius (Bunbury) Fon- 
taine, Ward, 5857. 
microphyllus Fontaine? Ward, 5857. 
Arpedium stillicidii, Scudder, 4896. 
Artemia gracilis, Beecher, 366. 
Artena Conrad, Whitfield, 6101. 
Arthracantha Williams, Wachsmuth and 
Springer, 5765a. 
depressa W. and Sp. (nov. spec), Wachs- 
muth and Springer, 5765a. 
ithacensis Williams, Wachsmuth and 
Springer, 5765a. 
punctobrachiata Williams, Wachsmuth 
and Springer, 5765a. 
.Arthroclema, Simpson, 1983. 
Arthroclema, Billings, Ulrich, 5537. 
armatum Ulrich, Ulrich, 5537. 
cornutum Ulrich, Ulrich, 5537. 
striatum n. sp., Ulrich, 5537. 
sp. undet., Ulrich, 5537. 
Arthrodira, Case, 766. 
Arthrophycus Hall, James, 2885. 
harlani, Conrad, Clarke, 976. 
Arthropora, Simpson, 4983. 
Arthropora, Ulrich, Ulrich, 5537. 
bifurcata n. sp., Ulrich, 5537. 
reversa n. sp., Ulrich, 5537. 
simplex Ulrich, Ulrich, 5537. 
Arthrostylns, Simpson. 1983. 
Arthrostylus, Ulrich, Ulrich, 5537. 
conjunctus Ulrich, Ulrich, 5537. 
obliquus Ulrich, Ulrich, 5537. 
Artionyx, Osborn, 4185. 
gaudryi n. sp., Osborn and Wortman, 4180. 
Artocarpidium cretaceum Ett., Lesquereux. 
3470. 
Artocarpophyllum occidentale n. sp., Dawson, 
1 136. 
Artocarpus dubia n. sp., Hollick, 2708. 
lessigiana (Lx.) Kn., Hollick, 2708. 
pungens Lx., Hollick, 2708. 
quercoides n. sp., Knowlton, 3255. 
Arystidictya n. gen., Hall and Clarke, 2269, 
2270. 
elegans n. sp., Hall and Clarke, 2269, 
2270. 
nodifera n. sp., Hall and Clarke, 2269, 
2270. 
Asaphis Modeer, Dall, 1281. 
canalis (?) Conrad, Cleland, 1012. 
centenaria Conrad, Dall, 1281. 
convexus ?, Cleland, 1012. 
diurus Green, Clarke, 935. 
gigas De Kay, Whiteaves, 6087. 
(Isotelus) susse Whitfield, Whiteaves, 6087. 
Ascoceras costulatum n. sp., Whiteaves, 6083, 
6087. 
Ascodictyum, Simpson, 4983. 
