M 1 '2 REFERENCE TO PLATES. 



FIGURES. PAGB. 



462. Conoteuthis Dupiniaiius, d'Orb. Keferstein, t. 131, f. 14 203 



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



464. 465. Beloptera belemnitoides, Bl. Keferstein, t. 130, f. 17, 18. 203 



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



Plate 96. 



467. Spirilla Peronii, Lam. H. & A. Adams' Genera, t. 5, f. 3 205 



468. 469. Spirula Peronii. Side view, and view of chambers and 



siphon. Specimen 205 



470. Orthoceras planicanaliculatum, Sandb. Keferstein, t. 132, f. 4. 208 



471. " subannulare, Barr. Keferstein, t. 132, f. 6 208 



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



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



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



475. " Bigsbyi. 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 sulcatum, Hauer. Woodward, 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,12,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, Hall. 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. 132, f. 1 212 



493. Phraginoceras ventricosum, Murchison. Keferstein, t. 132, f. 17. 212 



496. Nothoceras Bohemicum. Barr. Keferstein, t. 132, f. 24 213 



Plate 98. 



494. Phragmoceras callistoma, Barr. Woodward, ed. 2, f. 48 212 



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



496 a. Notboceras Bohemicum, Barr. Keferstein, t. 132, f. 23 213 



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



498. Pteronautilus Secbachianus, Geinitz. Dyas, t. 11, f. 7 b 214 



1!!>. Clynu-nia undulata, Miinst. KeiV-rsteih, t. 133, f. 1 214 



500, 501. Subclymenia evoluta Orb. Phil. Chenu, Man. i, f. 270, 271. 214 

 502. Aturia /Jczac, Sowb. Woodward, Man., ed. 2, t. 2, f. 12 216 



503 a. " " Keferstein, t. 132, f. 25 216 



:><):'>. Temnochilus biangulatus, Sowb. Min. Conch., 1. 45S. f. 2 217 



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



nois., ii, t. 14, f. 10 a, c 217 



504. Cryptoceras subtuberculatus, Orb. Chenu, Man. i, f. 274 -JIT 



