156 
BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 162. 
Paleontology— Continued. 
Genera and species described — Continued. 
Thiunfeldia lesquereuxiana Heer, Hollick, 
Nos. 367, 368. 
Thuja interrupta Newb., Newberry, No. 573a. 
Titanichthys agassizii Newberry, Eastman, 
No. 247. 
clarkii Newberry, Eastman, No. 247 
Titanotberium, Case, No. 136. 
Torosaurus, Case, No. 135. 
Torynifer criticus, Hall and Clarke, No. 327. 
Toxochelys, Case, No. 137. 
brachyrbinus n. sp., Case, No. 137. 
latiremis, Case, No. 137. 
latiremis Cope, Wagner, No. 842. 
serrifer, Case, No. 137. 
Trematella, Simpson, No. 702. 
Trematosaurus, Case, No. 134. 
Trematopora, Simpson, No. 702. 
Trematospira tennesseensis, Hall and Clarke, 
No. 327. 
Tresus Gray, Dall, No. 184. 
Tricalycites papyraceus Newb., Hollick, No. 
367, 368. 
Triceratops calicornis n. sp., Marsh, No. 523. 
obtusus n. sp., Marsh, No. 523. 
Trigonarca pulehra var., Harris, No. 334. 
Trinacria C. Mayer, Dall, No. 184. 
meekii n. sp., Dall, No. 184. 
Triplecia niagarensis, Hall and Clarke, No. 
327. 
Tripleuroceras robsoni n. sp., Whiteaves, No. 
875. 
Tripteroceras lambii, Whiteaves, No. 875. 
Trirachodon, Case, No. 135. 
Tritaxia tortilis (Reuss), Bagg, No. 27. 
tricarinata (Reuss), Bagg, No. 27. 
Tritylodon, Case, No. 135. 
Trochammina inflata (Montagu), Bagg, No. 27. 
Trochoceras insigne n. sp., Whiteaves, No. 
875. 
Trochus cinctus Wagner, Dall, No. 185. 
Tropidopora, Simpson, No. 702. 
Truncatulina akneriana (d'Orbigny), Bagg, 
No. 27. 
baidingerii (d'Orbigny), Bagg, No. 27. 
lobatula (Walker and Jacob), Bagg, No. 
27. 
refulgens (Montfort), Bagg, No. 27. 
ungeriana (d'Orbigny), Bagg, No. 27. 
variabilis, Bagg, No. 27. 
wuellerstorfi (Schwager), Bagg, No. 27. 
Tryblidium Lindstrom 1880, Berkey, No. 74. 
aduncum n. sp., Berkey, No. 74. 
barabuensis (Whitfield), Berkey, No. 74. 
convexum n. sp., Berkey, No. 74. 
corpulentum n. sp., Berkey, No. 74. 
extensum n. sp., Berkey, No. 74. 
rectilaterale n. sp., Berkey, No. 74. 
Toditanus, Case, No. 134. 
Tugonia Gray, Dall, No. 184. 
compacta n. sp., Dall, No. 184. 
(Tugoniopsis) Dall, Dall, No. 184. 
Tusoleuthis, n. gen., Logan, No. 498. 
longus, n. sp., Logan, No. 498. 
Turritelli whitei Stanton, Logan, No. 498. 
Paleontology— Continued. 
Genera and species described — Continued. 
Tylosaurus, Williston, No. 902. 
dyspelor, Williston, No. 902. 
micromus, Williston, No. 902. 
nepaeolicus, Williston, No. 902. 
proriger, Williston, No. 902. 
TJintacrinus socialis Grinnell, Logan, No. 498. 
Ulodendron, Dawson, No. 223. 
TJlmus speciosa Newb., Newberry, No. 573a. 
Unio (Unio) caloossensis, n. sp., Dall, No. 184. 
Unitrypa, Simpson, No. 702. 
Uvigerina canariensis, Bagg, No. 27. 
pygmsea, Bagg, No. 27. 
tenuistriata, Bagg, No. 27. 
Vaginulina legumen, Bagg, No. 27. 
legumen (Linne), Bagg, No. 27. 
strigillata Reuss, Bagg, No. 27. 
Venericardia alticostata var. Harris, No. 334. 
planicosta, Harris, No. 334. 
Vermipora Hall, Girty, No. 300. 
Verneuilina poly stropha (Reuss), Bagg, No.27. 
triquetra (Minister), Bagg, No. 27. 
Viburnum antiquum (Newb.), Hollick, New- 
berry, No. 573a. 
asperum Newb., Newberry, No. 573a. 
cuneatum Newb., Newberry, No. 573a. 
lanceolatum Newb., Newberry, No. 573a. 
Vinella, Simpson, No. 702. 
Vitis rotundifolia Newb., Newberry, No. 573a. 
Vitrewebbina Chapman, Bagg, No. 27. 
laevis (Sollas), Bagg, No. 27. 
sollasi Chapman, Bagg, No. 27. 
Widdringstonites reichii (Ett.) Heer ( ?), Hol- 
lick, No. 367. 
Worthenopora, Simpson, No. 702. 
Xerobatus ( ?) undata Cope, Gilbert, No. 296. 
Xiphactinns molossua Cope, Stewart, No. 746. 
thaumas Cope, Stewart, No. 746. 
Xylophaga, Turton, Dall, No. 184. 
Yoldia, Moller, Dall, No. 184. 
aldrichiana, Harris, No. 334. 
frater, n. sp., Dall, No. 184. 
laevis Say, Dall, No. 184. 
psammotsea, n. sp., Dall, No. 184. 
tarpaeia, n. sp., Dall, No. 184. 
Zanclodon, Case, No. 135. 
Zenatia, Gray, Dall, No. 184. 
Zirfsea crispata Linne, Dall, No. 184. 
Zizyphus longifolia Newb., Newberry, No. 
573a. 
obtusa, n. sp., Kirchner, No. 442. 
Zygospira putilla, Hall and Clarke, No. 327. 
Petrology. 
General. 
Bysmaliths, Iddings, No. 386. 
Chemical and mineral relationships in igneous 
rooks, Iddings, No. 384. 
Classification of igneous rocks, Turner, No. 
781. 
Determination of feldspars, Winchell, No. 916. 
Determination of plagioclase feldspars, 
Becker, No. 59. 
Differentiation in igneous magmas, Teall, No. 
763. 
Differentiation of magmas, Winchell, No. 920. 
