Page. 
Acentrophorus, generic description of .........----- 67-69 
affinities of, with Ischypterus 67 
alliances of, with Palzoniscus 68, 69 
chicopensis, description of ........ 69 
Agassiz, L., cited ...-.. Pent ae cee aasatectecsscas ccs 20, 41 
TINGE cearecersace Bock e oles SSD nae nors 12 
Miinsteriana, description of......-.- 84 
multifida, resembles Minsteriana. - - 
Bird or reptile tracks 
Bunbury, C.J. F., cited... 
Catopterus, generic description of .........-..-.--- 50, 51 
most beautiful of fossil fishes .........---....--- 51 
not found in Mesozoic rocks of Old World...... 51 
RRGcIPSOh rece) seu~ ssc es 19-21 
gracilis, allusions to --- -11, 19, 22 
(EO Wh HOG) ToesesseS ee ansose ecncs 55-57 
Redfieldi, structure of head of 53 
description of 53 
form of 60 
macrurus 20, 21 
minor, description of. . . 57, 58 
inkin) ToC omeatnsiacea sme ee toca sneer 58 
ornatus, description of ..--.. Saeasete nsAcaeeee 58 
of form and size of C. minor................--. 59 
anguilliformis, description of.................-.. 59 
parvulus, description of........ : 59 
Chapin, J. H., acknowledgments to. - A 92 
Cheirolepis Miinsteri, account of. . pas 90 
Clathropteris platyphylla. ..-.. aa a ae ete 12, 94 
Coal measures of Pennsylvania .............--..---. 8 
Colorado, fossils from .--......- 2 
Connecticut, fossils from..... 
Cycadinocarpus Chapini ..... 
MBAs WW Mi CILAU sok seenee cise sek ean acs/sanaue 
Dendrophycus triassicus, description of..........--- 83 
in Portland sandstones ....-...-.--. ..----.---.- 83 
Dictyopyge, generic description of..-.............-. 61-64 
previously considered Catopterus macrurus 62 
differences of the genera .......--.....------.--. 63 
comparison of fishes of American Trias-........ 63 
macrura, description of ............ --.---.-.--. 11, 64 
Diplurus, generic deseription of.......--...-...---.. 70 
comparison of, with living siluroids...-......... 7 
resemblance of, to Ceelacanthus, Holophagus, and 
MACRO OM Mists sete oe enema dawn eee ase 71,72 
longicaudatus, description of..........--.....--. 74-76 
Divonites longifolius, description of...-.---......--. 92, 93 
Egerton, P., cited -......... xi, 11, 20, 25, 28, 34, 53, 56, 63, 65, 72 
(mernon Bek; citediss. co. asa acnseeeeecon es cee xiii, xiv 
Emmons, E., cited xi, 9, 10, 12, 32, 88, 49 
Equisetum Rogersi, description of............-..-.. 12, 85 
(MerIBDE (DS tee. cs a caateones mocdeniueebone 86 
resemblance of, to Calamites gigas ......... 86 
Barynotus tenuiceps:--2-2.--.22--sseeres soe coneee | 1D) 24 
Page. 
Fontaine, W. M., cited xi, 10, 12, 13, 87-89, 94 
Fossil fishes, Triassic, list of, from Trias of New Jer- 
| sey and Connecticut.................---.--- 23 
Fossil plants, lists of, ftom Trias of New Jersey and 
| COC Tag AL eer Er eee eas Secs ee. 79 
Gratacap, Pn aitedees-..,-cc-cee een een sees oe eas 4L 
Geologic equivalents of Triassic rocks. . 8 
Heer, O., cited.-.....- 10 
Hills, R. C., cited 22 
Hitcheock, C. H., acknowledgments to ...-...-.--.-. 92 
Hitehcock, Ei: citeds2- essa. 22e) Je sr ~ an eer oc 9, 12, 32, 45 
HMitchcook, Hijri cited. uceeenis ceases aoe ee OL 
Howell, E. E., cited.-...... Soe CG La Sitioce sooo sc 22 
Huxley, 0. \H.eited: 222.2252. - scene 71, T4 
Ischypterus, generic description of 
allicd to Semionotus .........--..--.-- 4 
@llied) topueni lots eee eetes sp ereect neater 
characteristics of genus-.....-=..-.--.-...<..--- 
BpCcleshofiyewn- -yecln te sews eee nese mie 
Agassizii, description of .....-...---.-.------.-. 
latus, description of---..- 
ovatus, descripiion of.... 
Marshii, description of. - - 
TONEMDLENWICEA feet senmielaio an dee e a ee eter 
micropterus, description of 
tenuiceps, description of... 
resembles I. ovatus .--- 
fultus, description of -....-. 
allicd to P. macropterus ..-.......-.......--.- 
robustus, description of .....--.-..----.--.----- 
ALGO TOL O WSUS tome -an eaten ome en ee melee 36 
We AIGA Gorse MIONGUNS yas caste seen ee 36 
elegans, description. of.--...---.-..--.---- : 37 
resemblance in form to I. lineatus......-.-.-.. 37 
alatus, description Of = 22-5 - 2. se. ences a-sane == 37 
modestus, description of ----....-...-..--.------ 38 
MG NS EE NS) Somecos oaotsoe oncncaenoe=c 38 
lenticularis, description of -.- a5: 39 
similar in form to I. ovatus ...--.-----.. 39 
differentiated from I. micropterus .-...- = 39 
lineatus, description of .-........-...-..--.---.- 40 
differences from I. tenuiceps, I lenticularis, I. 
elegans, and I. fultus ........-..--. Be Sosecase 40 
closely allied to I. alatus...-....-......---.-.. 40 
macropterus, description of. .-...-.--...--.----- 41 
resemblance to P. macropterus, P. fultus, and 
Ds HUET Smee ws SAP eb aa Noe aan asece ane 41, 42 
Braunii, description of .-----..-.- See ee ee 43 
intermediate between I. tenuiceps and Acen- 
trophorus chicopensis..-.-...-----..-.------- 44 
reasons for classifying, as a species distinct 
from P. latus and I. latus 44 
parvus, description of.......--.-..--.-.- 45 
reasons for classification .......-...-.----.---. 45 
