LAMELLIBRANCHIATA. 



181 



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



Exped., Coal Moas. [Sig. capacious, 



large.] 

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



Chester Gr. [Sig. club-shaped.] 

 coopeiH, see Chsenomya cooperi. 

 costata, Meek & Worthen, 1869, Proc. 



Acad. Nat. Sci. Phi]., Coal Meas. [Sig. 



ribbed.] 

 cuneata, Swa,llow, 1858, Trans. St. Louis 



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



wedge-shaped.] 

 curta. Swallow, 1858, Trans. St. Louis 



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

 elegans, King, as identified by Geinitz. 



See A. geinitzi. 

 ensiformis, Swallow, 1860, Trans. St. 



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



the form 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, (Chse- 

 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.] 

 leavenworthensi% see Chaenomya 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. 



pleuron, the side ; opisthe, behind.] 

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



Meas. [Sig. turned back.] 

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



Chester Gr. [Sig. wavy.] 

 subcuneata, Meek & liayden, 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.] 

 ventricosa. Meek, 1871, Proc. Acad. Nat. 



Sci. Phil., Waverly Gr. [Sig. 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, 20tli Reg. Rep., 



Niagara Gr. [Sig. acute-beaked.] 

 alata, see Anomalodonta alata. 

 amygdalina, see Cypricardites amj'gda- 



linus. 



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

 ara Gr. [Etv. mvthological name.] 

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



Trenton Gr. [Sig. diminished, drawn 



out.] 

 bellif^triata, 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. Petrel"., Trenton & Hud. 



Riv. Gr. [Sig. keeled.] 

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



Nat. Sci. Phil., Cin'ti Gr. [Ety. proper 



name.] 

 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. bellistriata 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 ilfj/fiZtts.] 

 nec^lecta, see Amphicoelia neglecta. 

 nitida, Billings, 1866, Catal. Sil. Foss. 



Antic, Anticosti Gr. [Sig. neat, 



pretty.] 

 obtusa, 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.] 

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



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



[Sig. radiated.] 

 strieecostata, see Pterinea strisecostata. 

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



Antic, Anticosti Gr. [Sig. superb, 



large and fine.] 

 swanana, SaflTord, 1869, Geo. of Tenn. 



Not defined, 

 undata, Emmons, 1842, ( Pterinea undata) 



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



Gr. [Sig. wavv.] 

 Amphiccelia, Hall, i868, 20th Reg. Rep. N. 



Y. [Ety. amphi, both ; koilos, 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 bill.] 



