weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1895. 123 
Paleontology — Continued. 
Genera aud species described — Continued. 
Spirifera 
camerata Morton, Keyes, 258. 
forbesi Norwood and Prat ten, Keyes, 258. 
grimesi Hall, Keyes, 258. 
keokuk Hall, Keyes, 258. 
lineatoides Swallow, Keyes, 253. 
marionensis Shumard, Keyes, 258. 
parryana Hall, Keyes, 258. 
planoconvexus Shumard. Keyes, 258. 
plicatella, Whiteaves, 538. 
Spiroplecta americana Ehrenberg, Woodward 
and Thomas, 567. 
Spiraxis 
major, James, 236. 
randalli, James, 236. 
Spirophyton typum, James, 236. 
Spirorbis blairi n. sp., Miller and Gurley, 346. 
Spisula ( ?) quadricentennialis Harris, Dall, 
107. 
Spongurus, Matthew, G-. F., 318. 
Staurrcsphaera, Matthew, G. F., 318. 
Stegauocrinus 
araneolus sculptus (Meek and Worthen), 
Keyes, 257. 
concinnus Shumard, Keyes, 257. 
pentagDnus (Hall), Keyes, 257. 
Stenecphora n. gen., Scudder, 424. 
punctulata n. sp., Scudder, 424. 
Stenolocris n. gen., Scudder, 424. 
venosa n. sp., Scudder, 424. 
Stenopora tuberculata (Prout), Keyes, 258. 
Sterculia snowii, Knowlton, 272. 
Stethocapsa, Matthew, G. F., 318. 
Stomatia intermedia n. sp., Cooper, 91. 
Stomatopora Bronn, TJlrich, 485. 
inflata Hall, Ulrich, 485. 
proutana S. A. Miller, Ulrich, 485. 
tenuissima TJlrich, Ulrich, 485. 
turgida Ulrich, Ulrich, 485. 
Straparollus Montfort, Keyes, 258. 
ammon (White and Whitfield), Keyes, 
258. 
catilloides (Conrad), Keyes, 258. 
latus (Hall), Keyes, 258. 
obtusus (Hall), Keyes, 258. 
pernodosus Meek and Worthen, Keyes, 
258. 
planidorsatus Meek and Worthen, Keyes, 
258. 
spergenensis (Hall), Keyes, 258, 
valvataformis Shumard, Keyes, 258. 
Strepsidura ficus Gabb, Harris, 185. 
Streptelasma Hall, Winchell and Schuchert, 
561. 
breve n. sp. (Ulrich), Winchell and 
Schuchert, 561. 
corniculum Hall, Keyes. 257. 
corniculum Hall, Winchell and Schuch- 
ert, 561. 
(?) parasiticum n. sp. (Ulrich), Winchell 
and Schuchert, 561. 
profundum (Conrad MS.) Owen, Winchell 
and Schuchert, 561. 
rusticum Billings, Winchell and Schuch- 
ert, 561. 
Paleontology— Continued. 
Genera and species described — Continued. 
Streptorhyncbus 
crenistria (Phillips), Keyes, 258. 
lens White, Keyes, 258. 
Striatopora carbonaria White, Keyes, 257. 
Strictoporella Ulrich, Ulrich, 485. 
angularis Ulrich, Ulrich, 485. 
cribrosa Ulrich, Ulrich, 485. 
dumosa n. sp., Ulrich, 485. 
frondifera Ulricb, Ulrich, 485. 
rigida Ulrich, Ulrich, 485. 
var. intermedia n. var., Ulrich, 
485. 
Stromatopora expansa Hall and Whitfield, 
Keyes, 257. 
Stromatotrypa n. gen., Ulrich, 485. 
ovata n. sp., Ulrich, 485. 
Strophodonta demissa (Conrad) Keyes, 258. 
Strophomena Rafinesque (de Blainville), 
Winchell and Schuchert, 562. 
alternata (Conrad), Keyes, 258. 
billingsi n. sp., Winchell and Schuchert, 
562. 
emaciata W. and S., Winchell and Schuch- 
ert, 562. 
fluctuosa Billings, Winchell and Schuch- 
ert, 562. 
incurvata Shephard sp., Wincbell and 
Schuchert, 562. 
neglecta var. acuta n. var., Wincbell and 
Schuchert, 562. 
planodorsata W. and S., Winchell and 
Schuchert, 562. 
planumbona (Hall), Keyes, 258,- 
rugosa (Rafinesque MS.) Blainville, Win 
chell and Schuchert, 562. 
var. subtenta (Conrad MS.) Hall 
Winchell and Schuchert, 562. 
scofieldiW. and S., Winchell and Schuch 
ert, 562. 
septata W. and S., Winchell and Schuch 
ert, 562. 
trentonensis n. sp., Winchell and Schuch 
ert, 562. 
trilobataOwensp., Winchell and Schuch 
ert, 562. 
winchelli Hall, Wincbell and Schuchert 
562. 
Strophostylus Hall, Keyes, 258. 
nana Meek and Worthen, Keyes, 258. 
remex (White), Keyes, 258. 
reversus (Hall), Keyes, 258. 
peoriensis (McChesney), Keyes, 258. 
Strotocrinus 
blairi n. sp., Miller and Gurley, 346. 
regalis (Hall), Keyes, 257. 
Subulites 
compactus Whiteaves, Whiteaves, 538. 
compactus? var., Whiteaves, 538. 
elongatus Conrad, Keyes, 258. 
Surcula 
crenatospira n. sp., Cooper, 91. 
inconstans n. sp., Coopei, 91. 
monilifera n. sp., Cooper, 91. 
Surirella woolmaniana peticolas n. sp., Boyer, 
53. 
