236 
INDEX. 
PAGE . 
PAGE. 
Proitus marginalis, Walcott, 
. 1-29 
Spathiocaris Emersoni, Clarke, 
. 199 
P. 
microgemma, Hall, 
xvii, 109, 111 
S. 
Emersonii, Clai ke, 
199 
P. 
Missouriensis, Skumard, 
, 133 
S. 
Emersonii, Ellieiidge, Woodward and Jones, . 199 
P. 
Missouriensis, Shumard, 
133 
S. 
Emersonii, Jones and Woodward 
199 
P. 
Missouriensis, (Shumard) Hall, 
. 133 
s. 
Emersonii, Packard, . 
. 199 
P. 
neglectus, Barrande, 
110 
Spiril'era arenosa, Conrad, 
7 
P. 
Ncvadai, Hall, . 
xix, 139, 130 
S. 
arrecta. Hall, 
18, 28, 63 
P. 
occi<lens. Hall, 
. xii, xix, 130 
Streptorhyncbus (Orthis) hipi)arionyx, Vanuxem, 18, 28, 63 
P. 
occidens. Hall, . 
. 130 
Strophodonta magnifica. Hall, 
7 
P. 
ovifroiis. Hall, . xv 
i, xlv, 110. Ill, 112 
Stkobilepis, Clarke, . 
. (Ixiii) Ixiv, 212 
P. 
Phocion, Killings, 
. 1-25 
s. 
spinigera, Clarke, . 
xix, ixiv, 313, 215 
P. 
Pliocion, (Billings) Hall, 
xix, 135 
Stvj.ONUKUS, Png'e, . . (11) 158,161,162,221, 222 
P. 
planimarginatus, Jleek, . 
112 
S. 
excelsior, Hall, . . xx, 
, 158, 160, 331, 222 
p.; 
Ijlauimarginatus, (Meek) Hall, 
. xvii, 113 
s. 
excelsior. Hall, . 
. 158 
p. 
Prouti, Shumard, . 
. 1-25, 129, 130 
s. 
Eogani, Woodward, 
. li, 160, 222 
p. 
Prouti, Shumard, 
. 120 
s. 
Powriei, Woodward, . 
. 160 
p. 
Prouti, (Shumard) Hall, . 
xix, 136 
s. 
scoticus. Woodward, 
162 
p. 
Rowi, Green, xii, xix, xliv, I Jfi, 
122, 123, 121, 125, 126 
S.(?) 
(Echinocaris ?) Wrigbtianus, (Damson)//aZ2, xx, 160 
1 
23, 129, 130, 117, 182 
s. 
(Stylomurus in eiuor) excelsior. 
(Hall) Martin, 158 
p. 
Rowi, (Green)//(iR, . 
. 119 
Tehataspis, Hall, 
. (xx.xviii) xl, 73 
p. 
Ilowii, Hall, 
119 
Thysanopei.tis, Corda, . 
13 
p. 
sculi)tus, Barrande, , 
. xliv, 132 
Trapelocera, .... 
. . xxxv 
p. 
S))., Hall, . . . . 
xvi, 94 
Trigonaspis, . ... ' 
xii 
p. 
steno])yge. 
. xvii, 110 
Trilobites, . xxvii, 
, xxix, xx.xiv, xxxvi 
p. 
tumidus. Hall, 
xvii, 113 
Trilohus, ..... 
xxi, xxix 
p. 
Verueuili, Hall, 
xii, xvii, 108 
Trimerus, ..... 
.x.xiii, xxiv 
p. 
Verneuili, Hall, 
108 
Trinucleus 7, . 
xxxv 
p. 
C Phaeton.), 
xlv 
TlSOP 
Iuoc.VRis, ileee/ter. 
. (Iv) 184, 197, 198 
Protobalanhs, Whitfield, 
(1 xii) 209, 210 
T. 
allernata, Keecher, 
186 
P. 
HamiUonensis, ( Whitfield) Hall, 
xviii, 309 
T. 
alternata, (Beecher) Hall, 
. 186 
PROTOLIMtiLUS, Packard, 
. (xlviii) 153, 155 
T. 
alternata, Etheridge, Woodw.ard and Jones, 186 
P. 
Erieusis, (H. S. Williams) Hall, 
163 
T. 
hicarinata, Keecher, . 
. 184 
P. 
Eriensis, Packard, 
. 153 
T. 
bicarinatti, (Beecher) Hall, 
. XX, 184, 186 
Ptervgotus, . . . . 
1 , lii, 222 
T. 
hicarinata, Etheridge, Woodward and Jones, . 184 
p. 
anglicus. 
. 160 
T. 
Hamiltonia;, Hall, . 
xix, Expl. PE. 30 
p. 
(Leptocheles), 
lii 
T. 
interrupta, Keecher, . 
. R5 
J'VKGOMA, .... 
. 211 
T. 
interrupta, (Beecher) Hall, 
XX, 186 
Uenssela3ria ovoiiles, Hall, 
18, 63 
T. 
interrupta, Etheridge, Woodwar 
d and Jones, . 185 
Rhinocauis, Clarke, . 
(Iviii) lx, 195 
Tgrkilepas, Woodward, . . (Ixi 
iii) lxiv,2H,215, 220 
R. 
columbina, Clarke, . xi 
X, 182, 196, 197, 198 
T. 
cancellatus. Hall, 
. xvii, 316 
R. 
scaphoptera, Clarke, . 
xix, 182, 197, 198 
T. 
Devon icus, Clarke, 
xix, 316, 217 
Rliyiichonella cuboiiles, Sowerhi/, 
13 
T. 
flexuosus, Hall, 
. xvii, 315 
R. 
venustula. Hall, 
13 
T. 
foliatus. Hall, 
xix, 318 
SCALPBLLUM, . . . . 
215 
T.(?) 
Newberryi, ( Whitfield) Hall, 
. XX, 319 
SCHIZODISCUS, Clarke, 
. (Ixii) 207 
T. 
nitidulus. Hall, 
xix, 318 
S. 
capsa, Clarke, 
xix, 307 
T. 
squama, Hall, . . 
. xix, 317 
Selenopeltis, ... 
XXXV 
T. 
tener. Hall, .... 
xix, 319 
Slimonia, . . . . . 
161 
T. 
Wrightianus, De A'oninc/i:, . 
ixiii, 214, 215 
Sp. 
ATHIOCAKIS, Clarke, . (Ii 
,-iii) lix, Ixi, 199 , 220 
T. 
(Plumulites) 
215 
S. 
Emersoni, Clarke, . 
. XX, lx, 199 
Xiphogonium, .... 
, xli-xliv 
