CEPHALOPODA. 



187 



jmm, see Streptoceras janus. 



jason, Hall, 1862, 15th Reg. Rep., Scho- 

 harie grit. [Ety. mythological name.] 



juvenalis, Billings, 1865, Pal. Foss., Tren- 

 ton Gr. [Ety. proper name.] 



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

 Trenton Gr. [Sig. having many thin 

 plates.] The name was preoccupied 

 by D'Archiac & Verneuil in 1842. 



laterale. Hall, 1867, 20th Reg. Rep., Ni- 

 agara Gr. [Sig. lateral.] 



ligarius, Billings, 1875, Pal. Foss., Hud. 

 Riv. Gr. [Ety. proper name.] 



liratum, Hall, 1862,15th Reg. Rep., Ham. 

 Gr. [Sig. furrowed.] 



loculosum. Hall, 1861, Rep. of Prog. Wis., 

 Trenton Gr. [Sig. partitioned.] 



lucillus. Hall, 1867, 20th Reg. Rep., Niag- 

 ara Gr. [Ety. proper name.] 



lysander, Billings, 1862, Pal. Foss., Hud. 

 Riv. Gr. [Ety. proper name.] 



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

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

 long-mouthed.] 



magister, S. A. Miller, 1875, Cin. Quar. 

 Jour, of Sci., vol. 2, Cin'ti Gr. [Sig. 

 the chief.] 



marginale, Conrad, 1843, Proc. Acad. Nat. 

 Sci. [Sig. bordered.] The name was 

 preoccupied by Phillips in 1841. 



massiense, Safford, 1869, Geo. of Tenn., 

 Nashville Gr. [Ety. proper name.] 



matliei-i, see Gyroceras matheri. 



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

 vol. 4, Chazy Gr. [Ety. proper name.] 



maximum, see Nautilus maximus. 



mercuriui, see Cyrtocerina mercurius. 



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

 bec Gr. [Ety. proper name.] 



metula. Hall, 1862, 15th Reg. Rep., Up. 

 Held. Gr. [Sig. a httle obehsk.] 



missisquoi, Billings, 18 65, Pal. Foss., 

 (Orthoceras missisquoi) Quebec Gr. 

 [Ety. proper name.] 



morsum. Hall, 1862, 15th Reg. Rep., Up. 

 Held. Gr. [Sig. bitten off.] 



multicameratum. Hall, 1847, Pal. N. Y., 

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

 many-cham bered. ] 



myrice. Hall & Whitfield, 1875, Ohio Pal., 

 vol. 2, Niagara Gr. [Ety. mythologi- 

 cal name.] 



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

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

 thological name.] 



ohsourum, S. A. Miller, changed to magister 

 because obacuntm was preoccupied. 



ohioense, Meek, 1871, Proc. Acad. Nat 

 Sci. Phil., Corniferous Gr. [Ety 

 proper name.] 



orcaa, Hall, 1861, Rep. of Progr. Geo. Sur. 

 Wis., Niagara Gr. Subsequently re- 

 ferred by Hall to the genus Oncoceras, 

 see 20th Reg. Rep. 



orestes, Billings, 1865, Pal. Foss., Niagara 

 Gr. [Ety. mythological name.] 



orion, Hall, 1876, Ulust. Devonian Foss., 



Schoharie grit. [Ety. mythological 



name.] This name was preoccupied 



by Barrande. 

 orodes, Billings, 1862, Pal. Foss., Guelph 



Gr. [Ety. mythological name.] 

 postumius, Billings, 1865, Pal. Foss., Hud. 



Riv. Gr. [Ety. proper name.] 

 pusillum. Hall, 1867, 20th Reg. Rep., Ni- 

 agara Gr. [Sig. very small.] 

 regulare, Billings, 1857, Rep. of Progr. 



Black Riv. and Trenton Gr. [Sig. 



regular.] 

 rigidum. Hall, 1867, 20th Reg. Rep., Ni- 

 agara Gr. [Sig. rigid.] 

 rockfordense, Winchell, 1865, Proc. Acad. 



Nat. Sci., Kinderhook (?) Gr. [Ety. 



proper name.] 

 sacculus. Meek & Worthen, 1866, (Gom- 



phoceras sacculum) Proc. Acad. Nat. 



Sci. Phil., Ham. Gr. [Sig. a little sack.] 

 geptoris, Hall, see Gomphoceras septore. 

 simplex, Billings, 1857, Rep. of Progr., 



Black Riv. &Trenton Gr. [Sig. simple.] 

 sinuatum, Billings, 1857, Rep. of Progr., 



Black Riv. Gr. [Sig. marked with 



depressions.] 

 spinosum, see Gyroceras spinosum. 

 stonense, Safford, 1869, Geo. of Tenn., 



Trenton Gr. [Ety. proper name.] 

 subrectum. Hall, 1859, Pal. N. Y., vol. 



3, Low. Held. Gr. [Sig. somewhat 



straight.] 

 subturbinatum, Billings, 1857, Rep. of 



Progr., Chazy & Black Riv. Gr. [Sig. 



somewhat top-shaped.] 

 surgens, Barrande, 1869, Syst. Sil. de 



Boh., 4me serie, Quebec Gr. [Sig. 



rising.] 

 syphax, Billings, 1865, Pal. Foss., Quebec 



Gr. [Ety. mythological name.] 

 ksselatum, de Koninck. Not American. 

 tranmermim, see Gyroceras transversum. 

 trentonense, Emmons, 1842, (Orthoceras 



trentonensis) Geo. Rep. N.Y., Trenton 



Gr. [Ety. proper name.] 

 tnvoMs, see Gyroceras trivolve. 

 typicum, see Cyrtocerina typica. 

 undulatum, Hall, 1876, Illust. Devonian 



Foss., Schoharie grit. [Sig. wavy.] 

 undulatum, Vanuxem, see Gyroceras un- 

 dulatum. 

 unicorne, Winchell, 1863, Proc. Acad. 



Nat. Sci., Chemung Gr. [Sig. one- 

 horned.] 

 vallandighami, S. A. Miller, 1874, Cin. 



Quar. Jour. Sci., Cin'ti Gr. [Ety. 



proper name.] 

 ventricosum, S. A. Miller, 1875, Cin. 



Quar. Jour. Sci., vol. 2, Cin'ti Gr. 



[Sig. bulging out; rapidly enlarging.] 

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



Hud. Riv. Gr. [Ety. proper name.] 

 Cyrtocekina, Billings, 1865, Pal. Foss. [Ety. 



from the termination inu^, signifying 



resemblace to Cyrtoceras.l 

 mercurius, BilUngs, 1865, Pal. Foss., Que- 

 bec Gr. [Ety. mythological name.] 



