weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1901. 137 
Paleontology— Continued. 
Genera and species described — Continued. 
Pyramidula perspeetiva simillima, Stanton, 
727. 
Pyrula penita var. Conrad, Clark and Martin, 
141. 
(?) sp., Clark and Martin, 141. 
Quadrula Rafinesque, Letson, 493. 
coccinea (Conrad) Simpson, Letson, 493. 
solida (Lea) Simpson, Letson, 493. 
Rafinisquina alternata (Emmons) Hall and 
Clarke, Ruedemann, 660. 
deltoidea Conrad var., Ruedemann, 660. 
Randomia n. gen., Matthew, 529. 
aurorsen. sp., Matthew, 529. 
Remopleurides tumidus n. sp., Ruedemann, 
660. 
(Caphyra) linguatus n. sp., Ruedemann, 
660. 
Reptoflustrella heteropora Gabb and Horn, 
Ulrich, 751. 
Reticularia bicostata Vanuxem 1842, var. pe- 
tila Hall, 1879, Beecher, 51. 
cooperensis (Swallow), Weller, 804. 
fimbriata (Conrad), Kindle, 442. 
Knappianum Nettleroth, Kindle, 442. 
wabashensis n. sp., Kindle, 442. 
Reticulipora dichotoma Gabb and Horn, Ul- 
rich, 751. 
Rhinidictya mutabillis Ulr., Sardeson, 672. 
Rhinopora Hall, Grabau, 306. 
tuberculosa Hall, Grabau, 306. 
Rhiphidomella Oehlert, Grabau, 306. 
burlingtonensis (Hall), Weller, 804. 
circulus Hall, Grabau, 306. 
goodwini Nettleroth, Kindle, 442. 
hybrida Sowerby, 1839, Beecher, 51. 
hybrida (Sowerby), Grabau, 306. 
leucosia Hall, Kindle, 442. 
livia (Billings?), Kindle, 442. 
vanuxemi Hall, Kindle, 442. 
Rhombopora lepidendroides Meek, Sardeson, 
672. 
Rhynchonella Fischer de Waldeheim, Gra- 
bau, 306. 
(?) bidens Hall, Grabau, 306. 
(?) bidentata (Hisinger), Grabau, 306. 
robusta Hall, Grabau, 306. 
Rhychonella minnesotensis n. sp., Sardeson, 
677. 
sancta n. sp., Sardeson, 677. 
depressa n. sp., Kindle, 442. 
gainesi Nettleroth, Kindle, 442. 
var. cassensis n. var., Kindle, 442. 
louisvillensis Nettleroth, Kindle, 442. 
tenuistriata Nettleroth, Kindle, 442. 
Rynchopora postulosa (White), Weller, 804. 
Rhynchotreta Hall, Grabau, 306. 
cuneata Dalman 1827, var. americana 
Hall 1879, Beecher, 51. 
var. americana Hall, Grabau, 306. 
Ringicula dalli Clark, Clark and Martin, 
141. 
Roemerella grandis (Vanuxem), Kindle, 442. 
Romingeria cystoides n. sp. (Grabau), Greene, 
320. 
Sabal rigada, Hatcher, 344 
Paleontology— Continued. 
Genera and species described— Continued. 
Sanguinolites? sanduskyenis Meek, Kindle, 
442. 
Scala carinata Lea, Clark and Martin, 141. 
potomacensis n. sp., Clark and Martin, 
141. 
sessilis Conrad, Clark and Martin, 141. 
virginiana Clark, Clark and Martin, 141. 
Scaphiocrinus? longitentaculatusn. sp. (Row- 
ley), Greene, 320. 
Scenella c. f. reticulata Billings, Matthew, 529. 
c. f. retusa Ford, Matthew, 529. 
Scenidium Hall, Grabau, 306. 
pyramidale Hall, Grabau, 306. 
Schizobolus concentricus (Vanuxem), Kin- 
dle, 442. 
Schizodus contractus Hall. Kindle, 442. 
trigonalis (Win.), Weller, 804. 
Schizophoria striatula (Schlotheim), Kindle, 
442. 
subelliptica (W. and W.), Weller, 804. 
Schizotreta papilliformis n. sp., Ruedemann, 
659. 
Schmidtella (?) acuta n. sp., Matthew, 530. 
pervetusn. sp., Matthew, 530. 
crassimarginata var. ventrilabiata n. var., 
Ruedemann, 660. 
Sciurus j effersoni n. sp., Douglass, 234a. 
Selenosteus kepleri n. gen. et sp., Dean, 227. 
Semicoscinium Prout, Grabau, 306. 
tenuiceps (Hall), Grabau, 306. 
Septopora biserialis (Swal.), Sardeson, 672. 
Siderastrea radians (Pallas), Vaughan, 766. 
siderea (Ellis and Solander), Vaughan, 
766. 
Sinopa Leidy, Matthew, 538. 
agillis (Marsh), Matthew, 538. 
hians (Cope), Matthew, 538. 
opisthotoma n. sp., Matthew, 538. 
rapax Leidy, Matthew, 538. 
strenua (Cope), Matthew, 538. 
vera (Marsh), Matthew, 538. 
viverrina (Cope), Matthew, 538. 
whitia; (Cope), Matthew, 538. 
Siphonetreta minnesotensis Hall and Clarke, 
Ruedemann, 660. 
Skenidium anthonensis n. sp., Sardeson, 677. 
Solarium sp., Clark and Martin, 141. 
Solemya (Janeia) vetusta Meek, Kindle, 442. 
Solen lisbonensis (?) Aldrich, Clark and 
Martin, 141. 
Spathella phaselia (Win.), Weller, 804. 
Spathocharis emersoni Clark, Kindle, 442. 
Sphserium Scopoli, Letson, 493. 
stamineum (Conr.) Prime, Letson, 493. 
striatinum (Lam.) Prime, Letson, 493. 
Spha^rocoryphe major n. sp., Ruedemann, 
660. 
Sphenotus cylindricus (Win.), Weller, 804. 
Sphyrna prisca Agassiz, Case, 251. 
Spirifer Sowerby, Grabau, 306. 
acuminatus (Conrad), Kindle, 442. 
audaculus (Conrad), Kindle, 442. 
arctisegmentum Hall, Kindle, 442. 
byrnesi Nettleroth, Kindle, 442. 
centronatus Win., Weller, 804. 
