:\\'2 REFERENCE TO I'LATKS. 



KI<:i'KR8. I'ACJK. 



462. Conoteuthis I)ii])iiii;iiius. d'Orb. Keferstein, t. .131, f. 14 203 



463. Belemnosis plicata, Edwards. Kefertftein, 1. 180, f. 13 203 



464. 405. Beloptera belemnitoides, HI. Keferstein, t. 1:50, f. 17, is. 

 466. Spirulirostra Bellardii, d'Orb. Keferstein, t. 180, f. 19 203 



Plate 96. 



I'M. Spirilla Peronii, Lam. II. A: A. Adams' Genera, t. 5, f. 3 205 



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



siphon. Specimen 2< >5 



470. Orthtfceras planicanaliculatum, Sandb. Keferstein, t. 1:52, f. 4. 



171. '* subannulare, Harr. Keferstein, t. 132, f. 6 2()s 



li'j. Camerooeras vermicularis, d' Arch. Chenu, Manuel i, f. 237. .. 208 



47:5. *' vairinatus, Srhloth. Ibid., f. 23S 208 



174. Actinoceras Richardsoni, Stokes. Woodward's Man., f. 54... 



I ;:>. " I Jiu-sbyi. Keferstein, t. 132, f. 14 20H 



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



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



478. Aulococeras sulcatuin, Haner. \\ 'oodward, ed. 2, suppl., f. 7. 2<i'. 



479. Endoceras, section < after I>arramle). 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". V. t niver., 



t. 5, f. 2 210 



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



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



488. Oncoeeras constrict um, 1 1 all. Chenu, Man. i. f. 260 211 



489. Gomphoceras pvriforme, Mnrehison. Silur. Syst., t. 8. f. 19... 211 



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

 I'.H. Sycoceras orthogaster. Sandb. Chenu, Man. i, f. 253 212 



492. Ascoceras Bohemicum, Marr. Keferstt-in. t. 132, f. 1 212 



4'.K!. Phragmoceras ventricpaum, Murehison. Keferstein, t. 132, f. 17. 212 

 496. Nothoceras Uohemieum. Harr. Keferstein, t. 182, f. 24 213 



Plate 98. 



494. I'liraginoerras callistoma, Barr. Woodward, ed. 2, f. 48 212 



4H5. Gyroceras ( Joldfussii, d'Arch. Kefei-stein, t. 132, f. 21 212 



4'.i; //. Nothoceras Bohemicum, r.arr. Keferstein, t. 182, f. 28 213 



1 ( .)7. Lituitcs > .inii.lex, r.arr. Ke!\-rstein, t. 132, f. 22 21:5 



l!is. I'tcronautilus Seebarliiauus. Ceinitx. I )yas, t, 11, f. 7 b 214 



4H9. Clyinenia undulata, Miin>t. Kef.-rMein, t. 133, f . 1 214 



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



5(12. Aturia xie/ac, Sowb. Woodward. Man., *-d. 2, t. 2, f. 12 21 U 



:.(:; ,i. " ' " Keferstein, t. 1:52, f. 25 216 



5(K5. 'IVmuoeliilus biangulatus, S,.ul,. Min. Conch., t. 45s. f. 2.... 217 

 504 <i, b. Treniatodiscus trisiili-atus. Meek and Worthen. (Jeol. Illi- 

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



504. Cryptoceras subtnbcrculatus, Orb. Chenu, Man. i, f. 274 217 



