PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 205 
aleontology— Continued. 
(A nera and species described — Continued. 
Retepora doverensis n. sp., Ulrich and Bass- 
ler, 4. 
Reticularia proxima n. sp., Kindle and Bre- 
ger, 1. 
sp., Kindle and Breger, 1. 
Retiograptus Hall, Ruedemann, 1. 
tentaculatus Hall, Ruedemann, 1. 
Retiphycus hexagonale n. gen. and sp.. Ul- 
rich, 1. 
Retusa (Cylichniua) conulus (Deshayes), 
Martin, 3. 
(Cyliehnina) marylandica n. sp., Mar- 
tin, 3. 
(Cyliehnina) subspissa (Conrad), Mar- 
tin, 3. 
Rhahdosteus latiradix Cope, Case, 4. 
Raphoneis gemmifera Ehrenberg, Boyer, 1. 
Rhinoceros crassus Leidy, Osborn, 9. 
hesperius Leidy, Osborn, 9. 
longipes Leidy, Osborn, 9. 
meridianus Leidy, Osborn, 9. 
proterus, Leidy, Osborn, 9. 
Rhipidomella circularis Hall (?), Kindle and 
Breger, 1. 
hybrida Sowerby, Kindle and Breger, 1. 
vanuxemi Hall, Raymond, 2. 
Rhoechinus Keeping, Klem, 1. 
burlingtonensis Meek and Worthen, 
Klem, 1. 
gracilis Meek and Worthen, Klem, 1. 
Rhombotrypa n. gen., Ulrich and Bassler, 2. 
Rhopalodictyumcalvertense n.sp., Martin, 6. 
marylandicum n. sp., Martin, 6. 
Rhopalonaria Ulrich, Ulrich and Bassler, 1. 
attenuata n. sp., Ulrich and Bassler, 1. 
keokukensis n. sp., Ulrich and Bassler, 1. 
medialis n. sp., Ulrich and Bassler, 1. 
robusta n. sp., Ulrich and Bassler, 1. 
tenuis n. sp., Ulrich and Bassler, 1. 
venosa Ulrich, Ulrich and Bassler, 1. 
Rhus milleri n. sp., Hollick, 1. 
Rhynchodus pertenuis n. sp., Eastman, 2. 
Rhynchopora King, Greger, 2. 
beecheri n. sp., Greger, 2. 
illinoisensis (Worthen), Greger, 2. 
Rissoa (Onoba) marylandica n. sp., Martin, 3. 
sp., Martin, 3. 
Rotalia Lamarck, Bagg, 3. 
beccarii (Linne), Bagg, 3. 
beccarii var. broeckhiana Karrer, Bagg, 3. 
Rubioides n. gen., Perkins, 6. 
lignita n. sp., Perkins, G. 
Ruscula n. gen., Casey, 1. 
extricata n. sp., Casey, 1. 
plicata Lea, Casey, 1. 
Sagenites Mojsisovics, Smith (J. P.), 2. 
(Trachysagenites) herbichi Mojsisovics, 
Smith (J. P.), 2. 
Sagrina d'Orbigny, Bagg, 3. 
spinosa n. sp., Bagg, 3. 
Sapindoides n. gen., Perkins, 6. 
americanus (Lx.), Perkins, 6. 
cylindricus n. sp., Perkins, 6. 
medius n. sp., Perkins, 6. 
minimus n. sp., Perkins, 6. 
Paleontology — Continued. 
Genera and species described — Continued. 
Sapindoides parva n. sp., Perkins, 6. 
varius n. sp., Perkins, 6. 
vermontanus n. sp., Perkins, ti. 
Sapindus imperfectus n. sp., Hollick, 2. 
Sassafras hastatum Newb., Hollick, 2. 
progenitor Newb., Berry, 1. 
Saxicava arctica (Linne), Glenn, 5. 
Saxidomus popofianus n sp., Dall, 1. 
Scala (Opalia) calvertensis n. sp., Martin, 3. 
(Stenorhytis) expansa Conrad, Martin, 3. 
marylandica n. sp., Martin, 3. 
(Sthenorhytis) pachypleura Conrad, Mar- 
tin, 3. 
(Opalia) prunicola n. sp., Martin, 3. 
(Opalia) reticulata n. sp., Martin, 3. 
sayana Dall, Martin, 3. 
Scalaspira Conrad, Martin, 3. 
strumosa Conrad, Martin, 3. 
Scaphella (Aurinia) mutabilis (Conrad) Mar- 
tin, 3. 
(Aurinia) obtusa (Emmons), Martin, 3. 
solitaria (Conrad), Martin, 3. 
(Aurinia) typus (Conrad), Martin, 3. 
Sceptroneis caduceus Ehrenberg, Boyer, 1. 
Schizoblattina n. gen., Sellards, 1. 
multinervia n. sp., Sellards, 1. 
Schizolopha sp., Kindle and Breger, 1. 
Schizoporella cumulata n. sp., Ulrich and 
Bassler, 4. 
doverensis n. sp., Ulrich and Bassler, 4. 
informata (Lonsdale). Ulrich and Bassler, 
4. 
latisinuata n. sp., Ulrich and Bassler, 4. 
subquadrata n. sp., Ulrich and Bassler, 4. 
Schloenbachia austinensis F. Roemer, Lass- 
vvitz, 1. 
austinensis Roemer var. now minima, 
Lasswitz, 1. 
bourgeoisi d'Orb. em. Gross, var. ameri- 
cana n. var., Lasswitz, 1. 
dentato-carinata F. Roemer, Lasswitz, 1. 
evae n. sp., Lasswitz, 1. 
frechi n. sp. Lasswitz, 1. 
frechi var. curvata n. var., Lasswitz, 1. 
haberfellneri v. Hauer, Lasswitz, 1. 
kiliani n. sp., Lasswitz, 1. 
leonensis Conrad, Lasswitz, 1. 
leonensis Conrad, var. nov. maxima, 
Lasswitz, 1. 
quattuqrnodosa n. sp., Lasswitz, 1. 
"piattuornodosa var. planata n. var., 
Lasswitz, 1. 
quinquenodosaRedtenbachervar.minuta 
n. var., Lasswitz, 1. 
roemeri n. sp., Lasswitz, 1. 
roemeri var. elegantior n. var., Lasswitz, 1. 
roemeri var. harpax, n. var., Lasswitz, 1. 
sequens Gross, Lasswitz, 1. 
texana F. Roemer, Lasswitz, 1. 
Schuchertella n. n., Girty, 1. 
Scutella aberti Conrad, Clark, 3. 
Seila adamsii (H. C. Lea), Martin, 3. 
Selenichnus E. Hitchcock, Lull, 1. 
breviusculus E. Hitchcock, Lull, 1. 
falcatus E. Hitchcock, Lull, 1. 
