172 



CEPHALOPODA. 



jason, Billings, 1859, Can. Nat. & Geol., 

 vol. 4, Chazy Gr. [Ety. mythological 

 name.] 

 lasellensis, Meek & Worthen, 1866, Proc. 

 Acad. Nat. Sci., Phil., Up. Coal Meas. 

 [Ety. proper name.] 

 latus, see Temnocheilus latum, 

 lawsi, Swallow, ]860, Trans. St. Louis 

 Acad. Sci., Ham. Gr. [Ety. proper 

 name.] 

 leidyi, see Solenocheilus leidyi. 

 marcellensis, Vanuxem, 1842, iGoniatites 

 marcellensis) Geo. Eep. N. Y., Ham. 

 Gr. [Ety. proper name.] 

 maximus, Conrad, 1838, (Cyrtoceras max- 

 imus) Ann. Rep. N. Y., Ham. Gr. 

 [Sig. the largest.] 

 meekanus, see Trematodiscus meekanus. 

 missouriensis. Swallow, 1858, Trans. St. 

 Louis Acad. Sci., Coal Meas. [Ety. 

 proper name.] 

 natator, Billings, 1859, Can. Nat. & Geo., 

 vol. 4, Chazy Gr. [Sig. a swimmer.] 

 niotensis, see Temnocheilus niotense. 

 nodocarinatus, McChesney, syn. for N. 



occidentalis. 

 nodoso-dorsatus, Shumard, 1858, Trans. 

 St. Louis Acad. Sci., Coal Meas. [Ety. 

 nodosm, knotty; dorsatus, high-backed.] 

 occidentalis, Swallow, 1858, Trans. St. 

 Louis Acad. Sci., Permian Gr. [Sig. 

 western.] 

 occidentalis, Hall, 1860, 20th Reg. Rep., 

 Niagara Gr. This name being preoc- 

 cupied, McChesney's name, cancellatus, 

 has precedence. See Lituites cancel- 

 latus. 

 oriens. Hall, 1876, 111 ust. Devonian Foss., 



Marcellus shale. [Sig. the east.] 

 ornatus. Hall, 1860, 1.3th Reg. Rep. See 



Discites ornatus. 

 permianus, Swallow, 1858, Trans. St. 

 Louis Acad. Sci., Permian Gr. [Ety. 

 proper name.] 

 planidorsalu, see Trematodiscus planidor- 



salis. 

 planorbiformis, Jleek & AVorthen, 1860, 

 Proc. Acad. Nat. Sci. Phil., Coal Meas. 

 [Sig. shaped like a shell of the genus 

 Planwhii.'] 

 planovolvis, Shumard, 1858, Trans. St. 

 Louis Acad. Sci., Coal Meas. [Sig. 

 plane-whorled.] 

 pomponius, Billings, 1862, Pal. Foss., Cal- 

 ciferousGr. [Ety.mythological name.] 

 ponderosus, White, 1872, Pal. of E. Neb., 



Coal Meas. [Sig. heavy.] 

 (jandrangularis, McChesney, 1860, Desc. 

 New Pal. Foss., Coal Meas., syn. for 

 N. occidentalis. 

 rockfordensis. Meek & Worthen, 1866, 

 Proc. Acad. Nat. Sci. Phil., Kinder- 

 hook Gr. [Ety. proper name.] Prob- 

 ably a Gyrocerm. See 111. Geo. Sur., 

 vol. 3. 

 sangamonensis. Meek & Worthen , 1860 

 Proc. Acad. Nat. Sci. Phil., Coal Meaa. 

 [Ety. proper name.] 



seebachaniis, Geinitz, 1866, Carb. und Dyas 

 in Neb., Permian Gr. [Ety. proper 

 name.] This species was made the 

 type by Prof. Meek of the new genus 

 Pteronautilus, which see. 

 spectabilis, see Temnocheilus spectabile. 

 springeri. White & St. John, 1868, Trans. 

 Chi. Acad. Sci., Coal Meas. [Ety. 

 proper name.] 

 striatulus, see Trematodiscus striatulus. 

 subglobosus, Meek & Worthen, 1860, Proc. 

 Acad. Nat. Sci. Phil., Chester Gr. 

 Syn. for K. globatus, see Geo. Sur. 111., 

 vol. 3. 

 subsulcaius, Phillips, 1836, Geol. York. 

 Not clearly identified in this country. 

 trigonus. see Trematodiscus trigonus. 

 tnsulcatus, see Trematodiscus trisulcatus. 

 tyrans, Billings, 1859, Can. Nat. & Geol., 



vol. 4, Chazy Gr. [Sig. a tyrant.] 

 versutus, Billings, 1865, Pal. Foss., Que- 

 bec Gr. [Sig. complicated.] 

 wiiwlijiri, see Temnocheilus winslowi. 

 Oncoceras, Hall, 1847, Pal. N. Y., vol. 1. 

 [Ety. onkos, a swelling; kera3, horn.] 

 abruptum, Hall, 1861, Rep. of Progr. Wis., 



Trenton Gr. [Sig. abrupt.] 

 alceus, Hall, 1861, Rep. of Progr. Wis., 

 Chazy & Black Riv. Gr. [Ety. my- 

 thological name.] 

 amator, Billings, 1866, Catal. Sil. Foss. 



Antic, Clinton Gr. [Sig. a lover.] 

 clitus, Billings, 1866, Oatal. Sil. Foss. 

 Antic, Niagara Gr. [Ety. proper 

 name.] 

 constrictum, Hall, 1847, Pal. N. Y., vol. 

 1, Black Riv. & Trenton Gr. [Sig. 

 constricted.] 

 corydon, Billings, 1866, Catal. Sil. Foss. 

 Antic, Niagara Gr. [Ety. proper 

 name. ] 

 dilatatum, Hall, 1860, 13th Reg. Rep., 



Ham. Gr. [Sig. spread out.] 

 expansum, Hall, 1852, Pal. N. Y., vol. 2, 



Coralline Gr. [Sig. expanded.] 

 futile, Billings, 1866, Catal. Sil. Foss. 

 Antic, Clinton Gr. [Sig a water jar, 

 fusiform.] 

 gibbosum, Hall, 1852, Pal. N. Y., vol. 2, 



JMedina sandstone. [Sig. gibbous.] 

 lycus. Hall, 1861, Rep. of Progr. Wis.' 

 Chazy & Black Riv. Gr. [Ety. proper 

 name.] 

 orcas. Hall, 1861, (Cyrtoceras orcas) Rep. 

 of Progr. Geo. Sur. of Wis., Niagara 

 Gr. [Ety. proper name.] 

 ovoides, Hall, 1859, Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. egg-like.] 

 pandion. Hall, luijl, Rep. of Progr. Wis., 

 Chazy & Black Riv. Gr. [Ety. my- 

 thological name.] 

 pettiti, Billings, 1866, Catal. Sil. Foss. 

 Antic, Niagara Gr. [Ety. proper 

 name.] 

 plebeium. Hall, 1861, Geo. Rep. Wis., 

 Trenton Gr. [Sig. the common sort.] 

 subrectum, Hall, 1852, Pal. N. Y., vol. 2, 

 Clinton Gr. [Sig. nearly straight. 3 



