278 



NEW YORK STATE MUSEUM 



Crustacea, n6\ 2i8 3 -3i°. 



Cuesta, 40 3 , 55"; illus. facing p. 25. 



Cyathophyllum, 138". 



hydraulicum, 117 2 , 138 . 

 Cybele punctata, 225°. 

 Cyclas staminea, 246°-47 1 . 



striatina, 246 s . 

 Cyclostoma lapidaria, 242 5 . 



tricarinata, 243 1 . 

 Cyrtina, 197 3 . 



pyramidalis, 197 5 . 

 Cyrtoceras, 216 4 . 



cancellatum, 216 . 



subcancellatum, 216 . 

 Cystoidea, I48 7 -52 1 . 

 Cytherina cylindrica, 218 11 . 



spinosa, 220 3 . 



Dalmanella, 187 3 . 



elegantula, 101 4 , 103 4 , 187''. 

 Dalmanites, 223°-24 3 . 



limulurus, 105 4 , 224 1 . 

 Davis, W. M., cited, 253 s , 40 9 , 41°; 



mentioned. 18 7 . 

 Dawson, G. M., cited, 2S4 1 . 

 Day, D. F., catalogue of plants, 11 s . 

 Delthyris sulcatus, 200 2 . 

 Desor, E., cited, 254 1 . 

 Devil's hole, i5 T , 17", mo :i ; view near, 



facing p. 104. 

 Devonic series, 33 7 , I20 D -2I"; Siluro- 



Devonic contact, H7°-20 S . 

 Diamesopora, 175 5 . 



dichotoma, 175 7 . 

 Diaphorostoma, 2ii s -i2 5 . 



niagarense, I03 T , 212 1 . 

 Dictyonella, 179'. 



corallifera, 179 s . 

 Dictyonema, I33 7 ~34 5 . 



retiforme, i33°-34". 

 Dip of strata, 35 s -36 2 . 

 Diploclema, 162 4 . 



sparsa, 162 . 

 Diplophyllum, i39°-40 a . 



caespitosum, ^o^o". 

 Dolichopterus, 230 4 . 



macrochirus, 230 5 . 

 Drainage features, development of, 



37'-S4°- 

 Drymotrypa, i69 4 -70 2 . 



diffusa, i69 s -70 2 . 



Dufferin islands, 13 5 . 

 Dundas valley, 27 s , 42 s -46\ 



Eddy basin, 78 1 , 79°. 

 Encrinurus, 225'. 



ornatus, 225°. 

 Enterolasma, I36 s -37 r '. 



caliculus, 101 s , 137 2 . 

 Eucalyptocrinus, 101 s , 103 3 , iS/ 5 -58 9 . 



decorus, i57°-58°. 

 Eurypterida, 116 4 , 228 4 -3i°. 

 Eurypterus, 228 s -30 3 . 



dekayi, 230 2 . 



giganteus, 229°. 



lacustris, 22g 3 . 



var. robustus, 229 s . 



pachychirus, 230 1 . 



pustulosus, 229°. 



remipes, 229 4 ; illus. facing p. 229. 



robustus, 229 s . 

 Eusarcus, 230 7 . 



grandis, 230 s . 



scorpionis, 231 1 . 



Fairchild, H. L., cited, 254', 57 s ; 



mentioned, 18'. 

 Favosites, 112 s , 125", i4d°-42°. 



constrictus, 142 5 . 



niagarensis, i42 s -43 3 . 



parasiticus, 141". 



pyriformis, i4i 8 -42 5 . 



venustus, I40 s -4i 4 . 

 Featherstonaugh, G. W., cited, 254". 

 Fenestella, i70 2 -7i 2 . 



elegans, I70 s -7i 2 . 



prisca? 171 4 . 



tenuiceps, 171 4 . 

 Fleming, M. A., cited, 254°. 

 Flexibilia, i59 1 -6o ! '. 

 Fiuvial period, 66 1 -82 1 . 

 Foerste, A. F., cited, 254°. 

 Foot, Lyman, cited, 254 s . 

 Fort Massassauga, 2J~. 

 Fort Niagara, 27 2 . 

 Fossiliferous sections, i6 u -2i. 

 Fossils, i30 1 -46 9 ; in Siluric beds, dis- 

 tribution, 232-37. 

 Foster's flats, 15 2 , 7i°-76 4 ; illus. fac- 

 ing p. 72; shell-bearing gravels, 

 238I 



