208 INDEX TO NORTH AMERICAN GEOLOGY, PALEONTOLOGY, [bull. 189. 
Paleontology— Continued. 
Genera and species described — Continued. 
Diplograptus putillus Hall, Winchell and 
Schuchert, 6318. 
ruedemanni Gurley, Ruedemann, 4688. 
spinulosus, James, 2881. 
typicalis Hall, Winchell and Schuchert, 
6318. 
whitfieldi, James, 2881. 
Diplograpsis stenosus n. sp., Gurley, 2217. 
Diplopodia hilli Clark, Clark, 892. 
hilli Clark, Cragin, 1115. 
streeruwitzii n. sp., Cragin, 1115. 
taffi n. sp., Cragin, 1115. 
texana Roe in., Cragin, 1115. 
texanum (Roemer), Clark, 892. 
Diplopora, Simpson, 4983. 
Diploria Milne-Ed wardsand Haime,Vaughan, 
5734. 
confertieostata n. sp.,Vaughan, 5734. 
var. columnaria n.var.,Vaughan, 5734. 
Diplosaurus nanus, Marsh, 3695. 
Diplospirella Bittner, Hall and Clarke, 2264. 
Diplothecaacadica.var. crassa, Matthew, 3761. 
hyattiana, Matthew, -3761, 
Diplothemema geniculatum (Germ, et Kaulf . ) 
Stur., White, 6040. 
Diplotrypa quebecensis n. sp., Ami, 79. 
Diplurus, Case, 766. 
Dipnoi Case, 766. 
Dipterus calvinin n. sp., Eastman, 1608. 
calvini Eastman, Udden, 5519. 
contraversus, Hay, 2381. 
costatus n. sp., Eastman, 1608. 
mordax n. sp., Eastman, 1608. 
uddeni n. sp., Eastman, 1608. 
Diptychoceras, Hyatt, 2819. 
Piscina Lamarck, Hall and Clarke, 2260. 
convexa Shumard, Keyes, 3062. 
fletcheri n. sp., Ami, 88. 
humilis, Whitfield, 6099. 
illinoisensis n. sp., Miller and Gurley, 
3997a. 
lodensis,Whitfield, 6099. 
lugubris, Whitfield, 6099. 
meekana.Whitfield, 6099. 
minuta, Whitfield, 6099. 
munda n. sp., Miller and Gurley, 3997a. 
nitida (Phillips), Keyes, 3062. 
nova-scotica n. sp., Ami, 88. 
orientalis n. sp., Ami, 88. 
sampsoni n. sp., Miller, 3992. 
Discinisca Dall, Hall and Clarke, 2260. 
Discinolepis Waagen, Hall and Clarke, 2260. 
Discinopsis (Matthew) n. gen., Hall and 
Clarke, 2260. 
Discitoceras, Hyatt, 2816. 
Discoceras, Hyatt, 2819. 
antiquissimum, Hyatt, 2819. 
canadense n. sp.,Whiteaves, 6087. 
graftonense, Hyatt, 2819. 
graftonense M. & W.,Whiteaves, 6080. 
Discohelix retifera n. sp., Dall, 1259. 
verrili n. sp. (by Aldrich), Harris, 2316. 
Discophyllum peltatum Hall,Walcott, 5811. 
Discorbina allomorphinoides (Reuss), Chap- 
man, 870. 
Paleontology— Continued. 
Gt i" ra iiixl species described— Continued. 
Discorbina bertheloti (d'Orbigny), Bagg, 
148, 150. 
orbicularis, Bagg, 148. 
Discotrochus orbignianus Milne-Edwards and 
Haime,Vaughan, 5735. 
Disculina(?) Deslongchamps, Hall and Clarke, 
2264. 
Dispoteea tubifera, Say, 4813. 
Dissacus carnifex Cope, Osborn and Earle, 
4191. 
leptognathus n. sp., Osborn and Wort- 
man, 4180. 
navajovius Cope, Matthew, 3801. 
saurognathus Wortman, Matthew, 3801. 
Dissorhophus articulatus Cope, Cope, 1102. 
Distichium capillaceum, Penhallow, 4336. 
Distyonema Hall, Grabau, 2086. 
Distyotites fasciolus n. sp., Penhallow, 4333. 
maximus n. sp., Penhallow, 4333. 
Ditoecholasma n. gen., Simpson, 4984. 
Dittodus latus (Newb.), Hay, 2388. 
lucasi n. sp., Hay, 2388. 
Divaricella prevaricata n. sp., Guppy and 
Dall, 2214. 
Dizygocrinus W. and Sp. (nov. gen.), Wachs- 
muth and Springer, 5765a. 
andrewsianus (McChesncy), Wachsmuth 
and Springer, 5765a. 
biturbinatus (Hall), Wachsmuth and 
Springer, 5765a. 
eantonensis W. and Sp. (nov. spue), 
Wachsmuth and Springer, 5765a. 
crawfordsvillensis S. A. Miller, Wachs- 
muth and Springer, 5765a. 
decoris (S. A. Miller), Wachsmuth and 
Springer, 5765a. 
dodecadactylus (Meek and Worthen), 
Wachsmuth and Springer, 5765a. 
euconus (Meek and Worthen), Wachs- 
muth and Springer, 5765a. 
euconus, var. abscissus (Rowley and j 
Hare), Wachsmuth and Springer, 5765a. 
facetus (Miller and Gurley), Wachsmuth 
and Springer, 5765a. 
gorbyi S. A. Miller, Wachsmuth and 
Springer, 5765a. 
gurleyi (S. A. Miller), Wachsmuth and 
Springer, 5765a. 
indianensis (Lyon and Cass), Wachsmuth 
and Springer, 5765a. 
indianensis, var. simplex W. and Sp. (noil 
var.), Wachsmuth and Springer, 5765a. 
montgomeryensis, var. unibrachiatus \V. 
and Sp. (nov. var.), Wachsmuth and 
Springer, 5765a. 
montgomeryensis Worthen, Wachsr. ;i h 
and Springer, 5765a. 
mutabilis W. and Sp. (nov. spec.), Wai h I 
muth and Springer, 5765a. 
originarius, var. adultus (W. and Sp.), 
Wachsmuth and Springer, 5765a. 
originarius W. and Sp., Wachsmuth and I 
Springer, 5765a. 
rotundus (Yand. and Shum. ) , Wachsmuth 
and Springer, 5765a. 
unionensis, var. divalis (S. A. Miller), 
Wachsmuth and Springer, 5765a. 
