812 REFERENCE TO PLATES. 



FKiURBS. PAGE. 



462. Com.teutliis Dupiiiiaiius, d'Orb. Keferstein, t, 131, f. 14 303 



463. Belemnosis plicata, Edwards. Keferstein, t. 130, f. 13 203 



464. 465. Beloptera belemnitoides, Bl. Kefersteiu, t. 180, f. 17, 18. 203 



466. Spirulirostra Bellardii, d'Orb. Keferstein, t. 130, f. 19 203 



Plate 96. 



467. Spirula Perouii, Lam. H. & A. Adams' Geuera, t. 5, f. 3 305 



468. 469. Spirula Perouii. Side view, aud view of chambers aud 



siphon. Specimen 205 



470. Orthoceras planicanaliculatum, Saudb. Keferstein, t. 132, f. 4. 308 



471. •' subaunulare, Barr. Keferstein, t. 132, f. 6 208 



472. Cameroceras vermicularis, d'Arch. Chenu, Manuel i, f. 237. . . 208 



473. " vajrinatus, Schloth. Ibid., f. 238 208 



474. Actinoceras Richardsoni, Stokes. Woodward's Man., f. 54.. . . 208 



475. " Bio-sbyi. Keferstein, t. 132, f. 14 208 



476. Ormoceras Bayfieldi, Stokes. Keferstein, t. 132, f. 10 209 



477. Huronia vertebralis, Stokes. Woodward's Man., ed. i, p. 89.. 209 



478. Aulococeras sidcatum, Hauer. AVoodward, ed. 2, suppl., f. 7. 209 



479. Endoceras, section (after Barrande). Keferstein, t. 132, f. 8.. 209 



480. " proteiforme, Hall. Chenu, Manuel i, f. 240 209 



Plate 97. 



481. Tretoceras bisiphonatum, Salter. Quar. Jour. Geol. Soc, xiv, 



t.l2, f. 2..... 210 



483, 484. Gonioceras anceps. Hall. Chenu, Man. i, f. 215 210 



485. Colpoceras virgatum. Hall. 3d Rep. Regents N. Y. Univer., 



t. 5, f. 2 210 



486. Piloceras (after Salter). Woodward, ed. 2, suppl., f . 6 211 



487. Cyrtoceras acuticostatum, Sandb. Chenu, Man. i, f. 285 211 



488. Oncoceras constrictum, Ilall. Chenu, Man. i, f. 260 211 



489. Gomphoceras pyriforme, Murchison. Silur. Syst.. t. 8, f. 19... 211 



490. " Bohemicum, Barr. Woodward, Man. ed. 2, f. 47. 211 



491. Sycoceras orthogaster, Sandb. Chenu, Man. i, f. 253 212 



492. Ascoceras Bohemicum, Barr. Keferstein. t. 133, f. 1 312 



493. Phragmoceras ventricosum, Murchison. Keferstein, t. 132, f. 17. 213 



496. Nothoceras Bohemicum. Barr. Keferstein, t. 132, f. 24 313 



Plate 98. 



494. Phragmoceras callistoma, Barr. Woodward, ed. 3, f. 48 313 



495. Gyroceras Goldfussii, d'Arch. Keferstein, t. 132, f. 21 212 



496 a. Nothoceras Bohemicum, Barr. Keferstein, t. 133, f. 23 213 



497. Lituites simplex, Barr. Keferstein, t. 132, f. 22 213 



498. Pteronautilus Seebachianus, Geinitz. Dyas, t. 11, f. 7 6 314 



499. Clymenia undulata, Mttnst. Keferstein, t. 133, f . 1 214 



500,501. Subclymenia evoluta Orb. Phil. Chenu, Man. i, f. 270, 271. 314 



.503. Aturia ziczac, Sowb. Woodward, Man., ed. 3, t. 3, f. 13 216 



.503 a. " '• " Keferstein, t. 132, f. 25 216 



503. Temnochilus biangulatus, Sowb. Min. Conch., t. 458. f . 2 317 



504 a, b. Trematodiscus trisulcatus. Meek and Worthen. Geol. Illi- 

 nois., ii, t. 14, f. 10 a, c 317 



504. Cryptoceras subtuberculatus, Orb. Chenu, Man. i, f. 374 317 



