LAMELLIBRANCHIATA. 



205 



iphigenia, Billings, 1862, (Ctenodonta 

 iphigenia) Pal. Foss., vol. 1, Hud. Riv. 

 Gr. [Ety. proper name.] 



lata, Hall, 1852, Pal. N. Y., vol. 2, Clin- 

 ton Gr. [Sig. wide.] 



levata. Hall, 1847, (Nucula levata) Pal. 

 N. Y., vol. 1, Black Riv., Trenton and 

 Hud. Riv. Gr. [Sig. smoothed.] 



lineata, Phillips, 1836, (Nucula lineata) 

 Pal. Foss.,^am. Gr. [Sig. lined.] 



logani, Salter, 1851, (Ctenodonta logani) 

 Rep. Brit. Assoc, Hud. Riv. Gr. [Ety. 

 proper name.] 



machseriformis, Hall, 1843,(Nucula mach- 

 ariformis) Geo. Rep. 4th Dist. N. Y., 

 Clinton Gr. [Sig. sword-shaped.] 



mactrseformis. Hall, 1843, (Nucula mac- 



trseformis) Geo. Rep. 4th Dist. N. Y., 



Clinton Gr. [Sig. trough-like.] 

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



Black Riv. & Trenton Gr. [Sig. hav- 

 ing a prominent nose.] 

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



3, Low. Held. Gr. [Sig. nut-shaped.] 

 nuculiformis. Hall, 1847, (Modiolopsis 



nuculiformis) Pal. N. Y., vol. 1, Hud. 



Riv. Gr. [Sig. like a Nucula.'] 

 obliqua, Hall, 1845, (Nucula obliqua) 



Am. Jour. Sci., vol. 43, Cin'ti Gr. 



[Sig. oblique.] 

 ovata, Hall, 1861, Geo. Rep. Wis., Trenton 



Gr. [Sig. ovate.] 

 pectunculoides. Hall, 18 71, Pamphlet, 



Cin'ti Gr. [Sig. like a shell of the 



genus Pectunculus.'] 

 protensa. Hall, 1852, Stans. Ex. to Gt. 



Salt Lake, Coal Meas. [Sig. stretched 



out.] 

 sanguinolarioidea, Hall, 1847, Pal. N. Y., 



vol. 1, Trenton Gr. [Sig. like Sangui- 



nolaria.] 

 subnasuta. Hall, 1872, 24th Reg. Rep. N. 



Y., Up. Held. Gr. [Sig. somewhat 



nasute.] 

 ventricosa. Hall, 1861, Geo. Rep. Wis., 



Trenton Gr. [Sig. ventricose.] 



Tellinopsis, Hall, 1870, Prelim. Notice Lam. 

 shells. [Ety. tellinarjsis, resembling a 

 shell of the genus TeUina.] 



subemarginata, Conrad, 1842, (Nuculites 

 submarginatus) Jour. Acad. Nat. Sci., 

 yol. 8, Ham. Gr. [Sig. slightly emar- 

 ginated.] 

 Ungulina, Daudin, 1802, Bosc. Hist. Nat. 

 Coq. 3. [Ety. ungulina, like a hoof.] 



suborbicularis, see Cardiomorpha suborbi- 

 cularis. 

 Vanuxemia, syn. for Cypricardites. 



bayfieldi, see Cypricardites bayfieldi. 



inconstans, see Cypricardites inconstans. 



montrealensis, see Cypricardites montreal- 

 ensis. 



dixonensis, see Cypricardites dixonensis. 

 YoLDiA, Muller, 1842, Kroyer's Nat. Tid. 

 [Ety. proper name.] 



carbonaria. Meek, 1871, Rep. Reg. Uni- 

 versity W. Va., Coal Meas. [Sig. per- 

 taining to coal.] 



gibbosa, McChesney, 1859, (Leda gibbosa) 

 Pal. Foss., CoalMeas. [Sig. gibbous.] 



knoxensis, McChesney, 1865, (Leda knox- 

 ensis) Expl. Pal. Foss., Coal Meas. 

 [Ety. proper name.] 



levistriata. Meek & Worthen, 1860, (Leda 

 levistriata) Proc. Acad. Nat. Sci. Phil., 

 St. Louis Gr. [Sig. small-lined.] 



oweni, McChesney, 1860, (Leda oweni) 

 Desc. New Pal. Foss., Coal Meas. 

 [Ety. proper name.] 



polita, McChesney, 1859, (Leda polita) 

 Pal. Foss., Coal Meas. [Sig. smoothed.] 



rushensis, McChesney, 1865, (Leda rush- 

 ensis) Expl. Pal. Foss., Coal Meas. 

 [Ety. proper name.] 



stevensoni. Meek, 1871, Rep. Reg. Uni- 

 versity W. Va., Coal Meas. [Ety. 

 proper name.] 



subscitula. Meek & Hay den, 1858, (Leda 

 subscitula) Trans. Alb. Inst., vol. 4, 

 Permian Gr. [Sig. somewhat pretty.] 



valvulus. Hall, 1872, 24th Reg. Rep., 

 Corniferous Gr. [Sig. like the shell 

 of a bean.] 



