182 



LAMELLIBEANCHIATA. 



leda, Hall, 1860, 13th Reg. Rep. N. Y., 



Ham. Gr. [Ety. mythological name.] 

 iinuata, see Ilionia sinuata. 

 Anodontopsis, McCoy, 1851, Ann. & Mag. 



Nat. Hist., 2nd series, vol. 7. [Ety. 



from the resemblance to the shells of 



the genus Anudonta.l 

 (?) milleri, Meek, 1871, Am. .Jour. Sci., 



3rd series, vol. 2, Cin'ti <ir. [Ety. 



proper name.] 

 (?) unionoides. Meek, 1871, Am. Jour. 



8ci., 3rd series, vol. 2, Cin'ti < Jr. [Sig. 



liko a Unio.] This species is probably 



a Modiolopm. 

 ventricosa, Billings, 1874, Pal. Foss., vol. 



2, Dc'vuuian. [Sig. bulging out.] 

 Anom.vlodonta, S. A. Miller, 1874, ('in. 



Quar. Jour. 8ri., vol. 1. [Sig. anoui- 



alous-toothed.] 

 alata. Meek, 1872, (Ambonychia alata) 



Proc. Acad. Nat. f^ci. Phil., Cin'ti Gr. 



[Sig. \viiig(_'<l.] 

 gigantea, S. A. Miller, 1874, Gin. (^lar. 



Jour. Sci., vol. 1, Cin'ti <.rr. [Sig. 



very large] 

 Anturacumya, Salter, 1861, ^[enl. (ieo. Sur. 



Gr. Brit. [I'^ty. uallinir, coal; Aiijo, 



ii genus of slielLs.] 

 J angulata, Dawson, 1860, (Naiadites angu- 



lata) .Acadian Geology, Coal Meas. 



[Ety. from the angular outline of tlie 



posterior extremity.] 

 arenacea, Daw.son, 1860, (Naiadites aru- 



nacea) Acadian Geology, Coal Meas. 



[Ety. from the arenaceous shale.] 

 carbonaria, Dawson, 1860, (NaiaditeM car- 



bonaria) Acadian Geology, Coal Meas. 



[Ety. from the Coal Measures.] 

 elongata, Daw.son, 1860, (Naiadites elon- 



gata) Acadian Geologj', Coal Meas. 



[Ety. from the elongation laterally.] 

 Ijevis, Dawson, 1860, (Naiailitos l:cvis) 



Acadian Geology, Coal Meas. [Sig. 



smooth.] 

 obtusa, Dawson, 1860, (Naiadites obtusa) 



Acadian Geology, Coal Meas. [Ety. 



from the obtuse anterior end.] 

 ^ovalis, Dawson, 1860, (Naiadites ovalis) 



Acadian Geology, Coal Meas. [Sig. 



oval.] 

 Anthkacoptek.i, Salter, 1862, Mem. Geo. 



Sur. Gr. Brit. [Ety. antlirax, coal ; 



pteroyi, a wing.] 

 carbonaria, see Anthracomya carbonaria. 

 fragilis, INIeek & Worthen, 1866, Proc. 



Chi. Acad. Sci., Keokuk (_ir. [Sig. 



easily Vtroken.] 

 lixm, see Anthracomya laivis. 

 Area, Linne, 17.'')S. This genus is unknown 



in the palaeozoic rocks. 

 carbonaria, Cox, 1857, Geo. Sur. Ky., vol. 



3. See Macrodon carbonarius. 

 cuspidata, Svfallow, 1858, Trans. St. Louis 



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

 pointed.] 

 modesta, Winchell, 1863, Proc. Acad. Nat. 

 Sci., Chemung Gr. [Sig. modest, 

 small.] 



striata, Schlotheim, as identified by 



Geinitz, is Macrodon tenuistriatus. 

 punclifera, Dawson, 1868, Acad. Geol., 



Carb. [Sig. bearing dots.] The name 



wa.s preoccupied by Deshayes in his 



work, 1824-1836. 

 Anthuacosia, King, 1844, in Mag. Nat. Hist. 



[Ety. aallniix, coal.] 

 bradorica, Dawson, 1868. Acad. Geol., 



Carb. [Ety. proper name.] 

 A.sTAKTE, Sowerby, 1818, Min. Conch., vol. 2. 



[Ety. mythological name.] 

 mortonensis, Geinitz, 1866, Carb. und 



Dyas in Neb., Coal Meas. [Ety. 



proper name.] 

 nebrascensis, Geinitz, 1866, Carb. und 



Dyas in Neb., Coal Meas. [Ety. 



projier nauie.] 

 sulili-.rlilit;, see Cardiomorpha subtextilis. 

 AsTARTELLA, Hall, 1858, Gco. Rep. Iowa. 



[Ety. diminutive of Axhirlr.] 

 concentrica, ^IcCljesue.\', 18()0,(Edmondia 



concentrica) Dcscr. New Pal. Foss., 



Coal Meas. [Sig. from the concentric 



wrinkles or fold.s.] 

 newberryi, .Meek, 1875, Ohio Pal., vol. 2, 



(.'iial !Mcas. [Ety. proper name.] 

 varica, McChesney,"l860, Descr. New Pal. 



Foss.. Coal Meas. [Sig. straddling.] 

 A vera, Hall, 1858, (.ieo. Rep. Iowa, Coal 



"Meas. [Sig. true, genuine.] 

 AvicuLA, Klein, 175:!, Ostrac. [Ety. avicula, 



a little bird.] 

 acanthoptera, Hall, 1843, Geo. Rep. 4th 



Dist. N. Y., Cheiiiung Gr. [Ety. 



iikiiiillia, a spine; pteron, a wing.] 

 acosta, Cox, 1857, Geo. Sur. Ky., vol. 3, 



Coal Meas. [Sig. without ribs.] The 



correct etymology would make this 



word iiicou'lii. 

 .TqitilaU-ra, see Aviculopecten aequilaterus. 

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



3, Low. Held. Gr. [Sig. having equal 



radiiting striie.] 

 a'sopus, Conrad, 1842, Jour. Acad. Nat. 



Sci., vol. S, Up. SU. [Ety. proper 



name.] 

 angustirostra, Conrad, 1842, Jour. Acad. 



Nat. Sci., Up. Sil. [Sig. narrow- 

 beaked.] 

 anliqua, see Bakevellia antiqua. 

 arenaria. Not American, 

 aviformis, Conrad, 1842, Jour. Acad. Nat. 



Sci., vol. 8, Low. Sil. [Sig. bird-like.] 

 bella, Conrad, 1841, Ann. Rep. N. Y., 



Devonian. [Sig. beautifid.] 

 bellula, Hall, 1859, Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. quite beautiful.] 

 bdijdi, see Pterinea boydi. 

 I clifimuiijcnsis, see Pterinea chemungensis. 

 icirculus, Shumard, 1855, Geo. Rep. Mo., 



Kinderhook Gr. [Sig. a circle.] 

 communis, Blall, 185'.), Pal. N. Y., vol. 3, 



Low. Held. Gr. [Sig. a common form.] 

 cooperensis, see Entolium cooperense. 

 corrugata, James, 1874, Cin. Quar. Jour. 



Sci., vol. 1, Cin'ti Gr. [Sig. wrinkled.] 

 crucifonnis, see Actinodesma cruciforme. 



