LAMELLIBEANCHIATA. 



181 



"* capax, Newberry, 1861, Ives' Col. Ex. 

 Exped., Goal Meas. [Sig. capacious, 

 large.] 

 clavata, McChesney, 1860, New Pal. Foss., 



Chester Gr. [Sig. club-shaped.] 

 cooperi, see Chsenomya cooperi. 

 r-i costata, Meek & Worthen, 1869, Proc. 

 Acad. Nat. Sci. Phil., Coal Meas. [Sig. 

 ribbed.] 

 ^ cuneata, Swallow, 1858, Trans. St. Louis 

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

 wedge-shaped.] 

 curta, Swallow, 18.58, Trans. St. Louis 

 Acad. Sci., Permian Gr. [Sig. short.] 

 ekgans, King, as identified by Geinitz. 



See A. geinitzi. 

 ensiformis, Swallow, 1860, Trans. St. 

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

 the foi-m of a sword.] 

 geinitzi. Meek, 1867, Am. Jour. Sci., vol. 

 44, Coal Meas. [Ety. proper name.] 

 granosa, Shumard, 1858, (Leptodomus 

 granosus) Trans. St. Louis Acad. Sci., 

 Coal Meas. [Sig. full of grains.] 

 hannibalensis, see Grammysia hannibal- 



ensis. 

 hybrida. Meek & Worthen, 1865, (Chfe- 

 nomya hybrida) Proc. Acad. Nat. Sci. 

 Phil., Keokuk Gr. [Sig. a hybrid.] 

 lanceolata, Swallow, 1858, Trans. St. Louis 

 Acad. Sci., Permian Gr. [Sig. spear- 

 shaped.] 

 lata. Swallow, 1858, Trans. St. Louis Acad. 



Sci., Mid. Coal Meas. [Sig. broad.] 

 leavenwcrrthensis, see CliEenomj'a leaven- 



worthensis. 

 marionensis. White, 1876, Proc. Acad. 

 Nat. Sci., St. Louis Gr. [Ety. proper 

 name.] 

 minnehaha, see Chsenomya minnehaha. 

 pleuropistha. Meek, 1871, Proc. Acad. 

 Nat. Sci. Phil, Waverly Gr. [Ety. 

 jtleuma, the side ; opisthe, behind.] 

 reiiexa. Meek, 1872, Pal. E. Neb., Coal 



Meas. [Sig. turned back.] 

 sinuata, McChesney, 1860, New Pal. Foss., 



Chester Gr. [Sig. wavy.] 

 subcuneata, Meek & Hayden, 1858, Proc. 

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

 [Sig. somewhat wedge-shaped.] 

 subelegans, Meek, 1872, Pal. E. Neb., 

 Coal Meas. [Sig. somewhat elegant.] 

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

 Salt Lake, Coal Meas. [Sig. terminal.] 

 rwentricosa. Meek, 1871, Proc. Acad. Nat. 

 Sci. Phil., Waverly Gr. L*?ig- bulging 

 out.] 

 winchelli. Meek, 1871, Proc. Acad. Nat. 

 Sci. Phil., Waverly Gr. [Ety. proper 

 name.] 

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

 [Ety. ambon, the boss of a shield; 

 onyx, a claw or talon.] 

 acutirostra. Hall, 1867, 20th Reg. Rep., 



Niagara Gr. [Sig. acute-beaked.] 

 alata, see Anomalodonta alata. 

 amygdalina, see Cypricardites amygda 

 linus. 



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

 ara Gr. [Ety. mythological name.] 

 attenuata, Hall, 1861, Geo. Rep. Wis., 

 Trenton Gr. [Sig. diminished, drawn 

 out.] 

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

 Trenton Gr. [Sig. beautifully striated.] 

 cancellosa. Hall, 1861, Geo. Rep. Wis., 

 Trenton Gr. [Sig. made crosswise, 

 like net work.] 

 carinata, Goldfuss, 1826, (Pterinea carin- 

 ata) Germ. Petref., Trenton & Hud. 

 Riv. Gr. [Sig. keeled.] 

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

 Nat. Sci. Phil., Cin'tiGr. [Ety. proper 

 name.] 

 yi, costata, James, 1873, Ohio Pal., vol. 1, 

 Cin'ti Gr. [Sig. ribbed.] 

 erecta. Hall, 1861, Geo. Rep. Wis., Tren- 

 ton Gr. [Sig. erect, straight.] 

 illinoisensis, Worthen, 1875, Geo. Rep. 

 111., vol. 6, Cin'ti Gr. [Ety. proper 

 name.] 

 \ intermedia, Meek & Worthen, 1868, Geo. 

 Sur. 111., vol. 3, Galena Gr. [Sig. in- 

 termediate, between A. hellmtriata and 

 A. radiata. 

 lamellosa. Hall, 1861, Geo. Rep. Wis., 

 Trenton Gr. [Sig. made of many thin 

 plates.] 

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



defined, 

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

 Chazy Gr. [Sig. resembling a Mytilus.l 

 neplecta, see Amphiccelia neglecta. 

 nitida, Billings, 18 66, Catal. Sil. Foss. 

 Antic, Anticosti Gr. [Sig. neat, 

 pretty.] 

 oblLiia, see Cypricardites obtusus. 

 orbicularis, Emmons, 1842, (Pterinea or- 

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

 Gr. [Sig. orb-shaped.] 

 planistriata, Hall, 1861, Geo. Rep. Wis., 

 Trenton Gr. [Sig. plane-striated.] 

 ■«j-adiata. Hall, 1847, Pal. N. Y., vol. 1, 

 Trenton, Hud. Riv. Gr. & Mid. Sil. 

 [Sig. radiated.] 

 strisecostata, see Pterinea striEecostata. 

 superba, Billings, 1866, Catal. Sil. Foss. 

 Antic, Anticosti Gr. [Sig. superb, 

 large and fine.] 

 swanana, Safibrd, 1869, Geo. of Tenn. 



Not defined. 



undata, Emmons, 1842, (Pterinea undata) 



Geo. Rep. N. Y., Black Riv. & Trenton 



Gr. [Sig. wavy.] 



Amphiccelia, Hall, 1868, 20th Reg. Rep. N. 



Y. [Ety. amphi, both ; kdlos, hollow.] 



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



vol. 2, Niagara Gr. [Sig. ribbed.] 

 leidyi. Hall, 1867, 20th Reg. Rep. N. Y., 



Niagara Gr. [Ety. proper name.] 

 neglecta, McChesney, 1861, (Ambonychia 

 neglecta) Pal. Foss., Niagara Gr. [Sig. 

 neglected, overlooked.] 

 Anatina, Lamarck, 1809, Phil. Zool._ [Ety. 

 pertaining to the duck, or like the 

 duck's biU.] 



