658 
PRISTICLADODUS, 642 
dentatus, 642 
Goughi, 643 
Propucta, 390 
aculeata, 458 
analoga, 389 
antiquatus, 471 
aurita, 464 
calua, 465 
cancrini, 457 
carbonarius, 472 
Christiani, 390 
concinna, 467 
Cora, 459 
corrugata, 459 
costata, 460 
costellata, 461 
crassa, 463 
depressus, 248 
Edelburgensis, 463 
elegans, 460 
fimbriata, 461 
Flemingi, 461 
Jlexistria, 466 
gigantea, 463 
Goldfussi, 458 
granulosa, 472 
hemispherica, 464 
Hoppei, 465 
horrida, 465 
Keyserlingiana, 466 
latissima, 463 
laxispina, 458 
limiformis, 473 
lobatus, 461, 462 
longispinus, 461, 462 
margaritacea, 466 
?marginalis, 467 
Martini, 467 
mesoloba, 468 
papillatus, 472 
pectinoides, 466 
plicatilis, 468 
prelonga, 390 
pugilis, 461, 462 
punctata, 469 
pustulosa, 469 
pyxidiformis, 469 
quincuncialis, 470 
seabricula, 470 
Scotica, 463 
semireticulata, 471 
setosa, 472 
spinulosa, 472 
spinulosa, 458 
striata, 473 
sulcatus, 461, 462 
tenwistriatus, 459 
tortilis, 474 
INDEX. 
PRopucTa 
tubarius, 461 
tubuliferus, 465 
undatus, 474 
PRODUCTIDA, 389 
Pronites adscendens, 231 
Propora, 14 
ProrasTER, 60 
Sedgwickii, 60 
PROTOVIRGULARIA, 10 
dichotoma, 10 
Psammopus, 643 
canaliculatus, 643 
cornutus, 643 
porosus, 644 
rugosus, 644 
PsEUDOCRANIA, 187 
divaricata, 187 
PTERICHTHYS, 598 
cancriformis, 599 
latus, 600 
oblongus, 600 
productus, 600 
testudinarius, 600 
PTERINEA, 258 
Pasperula, 259 
Boydi, 259 
demissa, 260 
hians, 260 
?informis, 479 
leevigata, 479 
lineata, 261 
lunulata, 480 
megaloba, 261 
modiolaris, 267 
pleuroptera, 261 
retroflexa, 262 
Sowerbyi, 263 
subfaleata, 263 
tenuistriata, 263 
PTERONITES, 391 
persulcatus, 480 
subradiatus, 392 
PTEROPODA, 286 
Pterygotus leptodactylus, 175 
Piychomphalus, 291 
Prytopictya, 45 
acuta, 45 
costellata, 46 
explanata, 46 
fucoides, 47 
lanceolata, 47 
sublanceolata, 47 
Pullastra antiqua, 397 
complanata, 266 
levis, 271 
Pycnopontl, 614 
PyGoprerus, 608 
mandibularis, 608 
PYGoPTERUS 
Scoticus, 608 
sculptus, 608 
PYRAMIDELLID&, 302 
Pyritonema fasciculus, 10 
RADIATA, 1 
classes of, 1 
RETEPORA, 48 
antiqua, 75 
flustracea, 114 
Hisingeri, 48 
membranacea, 113 
polyporata, 114 
prisca, 76 
undulata, 114 
virgulacea, 115 
Reteporina, 49 
Ruizopvs, 611 
gracilis, 611 
Hibberti, 612 
RHYNCHONELLID&, 199 
Rostellaria angulata, 531 
RUDISTES, 186 
Sanguinolaria concentrica, 503 
?elliptica, 397 
oblonga, 501 
phaseolina, 502 
sulcata, 503 
SANGUINOLITES, 276 
anguliferus, 276 
clava, 504 
decipiens, 277 
inornatus, 277 
Tridinoides, 504 
lunulatus, 505 
striato-lamellosus, 506 
sub-carinatus, 506 
sulcatus, 507 
tricostatus, 507 
variabilis, 508 
SARCINULA, 36 
organum, 37 
Phillipsii, 110 
placenta, 110 
tuberosa, 110 
SAURODIPTERID®, 585 
SavrRorpi, 608 
Sauropsis Scoticus, 608 
Schizodus, 494 
elliptica, 189 
obscurus, 496 
Rossicus, 497 
rotundatus, 497 
Schizotreta, 189 
truncatus, 497 
SeminuLa, 408 
elongata, 409 
