SS ee 
868 GENERAL INDEX. 
Cristellaria, sp., 765, 767. 
Crocodilian genus Plesiosuchus, Owen, 
Sir R. Owen on the, 153. 
Crocodilus, skull of, 158. 
Croll, Dr. J., award ofa portion of the 
Barlow-Jameson Fund to, Proc. 35. 
Crosskey, Dr. H. W., on the Ostra- 
coda and Foraminifera of the shelly 
patches at Bridlington Quay, 323. 
Cryptoccenia obeliscus, 706. 
plana, 707. 
— Rigauxi, 707. 
—., sp., 708. 
Crystallization in connexion with 
strain and the development of per- 
litic structure, Mr. F. Rutley on, 
340. 
Ctenopetalus crenatus,623. 
Cwaen-hen, section from Llechyn- 
farwy to, 575. 
Cwaen shales, 571. 
Cyathocenia decipiens, 372. 
inerustans, 372. 
Cyathophyllum Fletchert from the 
Wenlock shale, Prof. P. M. Dunean 
on, 174. 
? bilaterale, 503. 
Cyclocrinus, 834. 
Cyrtonodus gibbus, 631. 
Cythere Blakeana, 772. 
Bradiana, 772. 
drupacea, 772. 
— Guembeliana, 772. 
juglandica, 766, 768. 
—— (Cythereis) quadrilatera, 766, 772. 
Schwageriana, 766. 
subconcentrica, 768. 
— tenella, 772. 
Cytherella jugosa, 773. 
subovata, 773. 
symmetrica, 768. 
Cytheridea subperforata, 768, 772. 
Davies, Mr. T., on the microscopic 
structure of some rocks from Pem- 
brokeshire, 548. 
Davis, Mr. J. W., on some remains of 
fossil fishes from the Yoredale series 
at Leyburn, in Wensleydale, 614. 
Dawson, Dr. J. W., on the geology of 
the line of the Canadian Pacific 
Railway, 376. 
Defrancia exaltata, 692. 
Delta in miniature, Mr. T. Mellard 
Reade on a, 263. 
Deltoptychius plicatus, 628. 
Dentition of Tritylodon longevus, 
Owen, Sir R. Owen on the, 146. 
Devon coast, south, sketch-map of the, 
from Torcross to Hope Cove, 2. 
Devonshire, south coast of, Mr. A. T. 
Metcalfe on further discoveries of 
vertebrate remains in the Triassic 
strata of, 257. 
Diabase of Japan, 456. 
Diastopora diluviana, 787. 
Lamourouxii, 789. 
—— microstoma, 788, 789. 
patina, 689. 
—— suborbicularis, 689. 
Diclitodus scitulus, 623. 
Diclonius mirabilis, mandible of, Proc. 
49. 
Dimetian rocks. evidence of age of, 
511; distribution of, in Pembroke- 
shire, 512; origin of, 513; breccia- 
ted portions of, 513; petrological - 
characters of, 514; from St. David’s, 
analyses of, 528. 
Dinas Dinorwig, section through, 198 ; 
conglomerates from, 203. 
Diorite, quartz-mica, of Japan, 454. 
Diorite-porphyrite of Japan, 455. 
Diorites of Guernsey, 407, 423: 
grooved weathering in, south of 
Fort Douglas, 409. 
Diplacodus bulboides, 633. 
Discocenia bononiensis, 702. 
Discotubigera clypeata, 690. 
iterata, 690. 
Divisional line between the Dyas and 
Trias systems of Central Europe, 
Rey. A. Irving on the true, 389. 
Donations to the Library and Museum, 
Proce. 71. 
Drift-gravels observed in the new rail- 
way cutting at Guildford, Lt.-Col. 
Godwin-Austin on, 599. 
Drift, ripple-marks in, Mr. T. Mellard 
Reade on, in Shropshire and Che- 
shire, 267. 
Droitwich brine-springs, Mr. C. Par- 
kinson on the, 248. 
Dunean, Prof. P. M., on Streptelasma 
Rémeri, a new coral from the 
Wenlock Shale. 167. 
, on Cyathophyllum Fletcheri, Ed. 
& H., sp., from the Wenlock Shale, 
with remarks on the group to which 
it belongs, 174. 
, on the internal structures and 
classificatory position of Micrabacia 
coronula, Goldfuss, sp., 561. 
Dyas, general relations of the, to the 
older members of the Palzozoic 
series, 396. 
— and Trias of Central Europe, 
Rey. A. Irving on the, 389. 
Dyke, dying out of a, in a quarry near 
Cockfield, 210; in coal-measures, 
Boldon Pit, 231. 
