GASTEROPODA. 



149 



vittata, Hall, 1847, (Murchisonia vittata) 



Pal. N. Y., vol. 1, Trenton Gr. [Sig. 



banded.] 

 Fums, Brugaiere, 1789, Encyc. Meth. [Ety. 



fmus, a spindle.] This genus is un- 

 known in the palaeozoic rocks. 

 inhabilis, see Macrocheilus primigenius. 

 Helicotoma, Salter, 1859, Can. Org. Rem., 



Decade 1. [Ety. Helix, a genus of 



shells ; tome, a notch.] 

 ilecUm, Safford, 1869, Geo. of Tenn. Not 



defined, 

 eucharis, Billings, 1865, Pal. Foss., vol. 1, 



Quebec Gr. [Sig. beautiful.] 

 gorgonea, Billings, 1865, Pal. Foss., vol. 1, 



Quebec Gr. [Ety. mythological name.] 

 larvata, Salter, 1859, Can. Org. Rem., 



Decade 1, Black Riv. and Trenton Gr. 



[Sig. a ghost, masked.] 

 miser, Billings, 1865, Pal. Foss., vol. 1, 



Quebec Gr. [Sig. wretched.] 

 muricata, Salter, 1859, Can. Org. Rem., 



Decade 1, Black Riv. and Trenton Gr. 



[Sig. like the shell Murex.] 

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



vol. 4, Calciferous Gr. [Sig. very 



much striated.] 

 planulata, Salter, 1859, Decade 1, Black 



Riv. & Trenton Gr. [Sig. rather flat.] 

 proserpina, Billings, 1865, Pal. Foss., vol. 



1, Quebec Gr. [Ety. mythological 



name.] 

 serotina, Nicholson, 1874, Rep. Pal. Ont. 



[Sig. backward.] 

 spinosa, Salter, 1859, Can. Org. Rem., 



Decade 1, Black Riv. Gr, [Sig. spiny, 



from the spines on the whorls. ] 

 tennesseensis, Safford, 1869, Geo. of Tenn. 



Not defined, 

 tritonia, Billings, 1865, Pal. Foss., vol. 1, 



Quebec Gr. [Ety. mythological name.] 

 HoLOPEA, Hall, 1847, Pal. N. Y., vol. 1. [Ety. 



holos, entire ; ope, an aperture.] 

 antiqua, Vanuxem, 1843, (Littorina an- 



tiqua) Geo. Rep. 3rd Dist. N. Y., Low. 



Held. Gr. [Sig. ancient.] 

 antiqua var. pervetusta, Hall, 1859, Low. 



Held. Gr. [Sig. very ancient.] 

 chicagoensis, Winchell & Marcy, 1865, 



Mem. Bost. Soc. Nat. Hist., Niagara 



Gr. [Ety. proper name.] 

 conica, Winchell, 1863, Proc. Acad. Nat. 



Sci., Chemung Gr. [Sig. conical.] 

 danai. Hall, 1859, Pal. N. Y., vol. 3, Low. 



Held. Gr. [Ety. proper name.] 

 dilucula. Hall, 1847, (Turbo dilucula) Pal. 



N. Y., vol. 1, Calciferous Gr. [Sig. 



very early, at break of day.] 

 (?) elongata. Hall, 1859, Pal. N. Y., vol. 



3, Low. Held. Gr. [Sig. elongated.] 

 eriensis, Nicholson, 1874, Rep. Pal. Ont., 



Devonian. [Ety. proper name.] 

 gracia, Billings, 1862, Pal. Foss., vol. 1, 



Guelph Gr. [Sig. pleasant.] 

 guelphensis, Billings, 1862, Pal. Foss., vol. 



1, Guelph Gr. [Ety. proper name.] 

 harmonia, Billings, 1862, Pal. Foss., vol. 1, 



Guelph Gr. [Ety. mythological name.] 



lavinia, Billings, 1862, Pal. Foss., vol. 1, 



Trenton Gr. [Ety. mythological 



name.] 

 leiosoma, Billings, 1865, Pal. Foss., vol. 1, 



Quebec Gr. [Sig. smooth-bodied.] 

 nereis, Billings, 1862, Pal. Foss., vol. 1, 



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

 thological name.] 

 niagarensis, Winchell & Marcy, 1865, 



Mem. Bost. Soc. Nat. Hist., Niagara 



Gr. [Ety. proper name.] 

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



Trenton & Hud. Riv. Gr. [Sig. ob- 



Hque.] 

 obscura, Hall, 1847, (Turbo obscura) Pal. 



N. Y., vol. 1, Calciferous Gr. [Sig. 



obscure, doubtful.] 

 occidentalis, Nicholson, 1875, Quar. Jour. 



Geo. Soc. Lond., Guelph Gr. [Sig. 



western.] 

 Ophelia, Billings, 1865, Pal. Foss., vol. 1, 



Quebec Gr. [Ety. proper name.] 

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



vol.4, Calciferous Gr. [Sig. oval.] 

 paludiniformis, Hall, 1847, Pal. N. Y., 



vol. 1, Trenton Gr. [Sig. like a Palu- 



dina.] 

 proserpina, Billings, 1862, Pal. Foss., vol. 



1, Calciferous & Chazy Gr. [Ety. my- 

 thological name.] 

 proutana. Hall, 1858, Trans. Alb. Inst., 



vol. 4, Warsaw Gr. [Ety. proper 



name.] 

 pyrene, Billings, 1862, Pal. Foss., vol. 1, 



Black Riv. Gr. [Ety. mythological 



name.] 

 reversa, Hall, 1860, Can. Nat. & Geo., 



vol. 5, Silurian. [Sig. reversed.] 

 subconica, flail, 1859, Can. Nat. & Geo., 



vol. 3, Low. Held. Gr. [Sig. subcon- 



ical.] 

 subconica, Winchell, 1863. This name 



was preoccupied.] 

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



1, Black Riv. Gr. [Sig. symmetrical.] 

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



Calciferous Gr. [Sig. turgid, swollen 



out.] 

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



Trenton Gr. [Sig. bulging out.] 

 HoLOPELLA, McCoy, 1855, Brit. Pal. Foss. 



[Ety. diminutive of Holopea.'] 

 mira, Winchell, 1863, Proc. Acad. Nat. 



Sci.,  Chemung Gr. [Sig. wonderful.] 



Inachuscatilloid€ii,see Euomphalus catilloides. 



pervetustus, see Euomphalus pervetustus. 



undatm, see Lituites undatus. 



IsoNEMA, Meek & Worthen, 1866, Proc. Acad. 



Nat. Sci. Phil. [Ety. isos, equal ; nenia., 



a thread.] 

 bellatulum, Hall, 1861, (Loxonema bella- 



tula) 14th Reg. Rep. N. Y. [Sig. quite 



handsome.] 

 depressum, Meek & Worthen, 1865, Proc. 



Acad. Nat. Sci. Phil., Ham. Gr. [Sig. 



depressed.] 

 humilis, see Naticopsis humilis. 



