LAMELLIBRANCHIATA. 



197 



recurvirostris, Meek & Worthen, 1860, 



Proc. Acad. Nat. Sci. Phil., Up. Coal 



Meas. [Sig. beaked, recurved.] 

 squaraosa, Sowerby, 1827, Trans. Geo. 



Soc. Lend., 2d ser., vol. 3, Permian 



Gr. [Sig. rough, scaly.] 

 subquadrata, Shumard, 1855, Geo. Rep. 



Mo., Coal Meas. [Sig. somewhat qua- 

 drate.] 

 St. ludovici, Worthen, 1873, Geo. Sur. 111., 



vol. 5, St. Louis Gr. [Ety. proper 



name; Sanctus Ludovieus, St. Louis.] 

 swallovi, McChesney, 1860, New Pal. 



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

 Mytilarca, Hall, 1870, Prelim. Notice Lam. 



shells. [Ety. from the two genera 



Mytilus and Arca.^ 

 arenacea. Hall, 1870, Prelim. Notice Lam. 



shells, Schoharie grit. [Sig. sandy.] 

 attenuata. Hall, 1870, Prelim. Notice 



Lam. shells, Chemung Gr. [Sig. 



elongated.] 

 canadensis, Billings, 1874, Pal. Foss., vol. 



2, Devonian. [Ety. proper name.] 

 carinata, Hall, 1877, Pal. N. Y., vol. 5, 



Chemung Gr. [Sig. carinated.] 



chemungensis, Conrad, 1842, (Inoceramus 

 chemungensis) Jour. Acad. Nat. Sci. 

 Phil., vol. 8, Chemung Gr. [Ety. 

 proper name.] 



cordiformis. Hall, 1859, (Megambonia cor- 

 diformis) Pal. N. Y., vol. 3, Low. Held. 

 Gr. [Sig. heart-shaped.] 



fibristriata. White & Whitfield, 1862, 

 (Mytilus flbristriatus) Proc. Bost. Soc. 

 Nat. Hist, Kinderhook Gr. [Sig. 

 fibre-lined.] 



mytilimeria, Conrad, 1842, (Inoceramus 

 mytilimeris) Jour. Acad. Nat. Sci., 

 vol. 8, Low. Held. Gr. [Ety. Mytilus 

 a genus of shells; meros, apart.] 



nitida, Billings, 1874, Pal. Foss., vol. 2, 

 Devonian. [Sig. neat, pretty.] 



occidentalis. White & Whitfield, 1862, 

 (Mytilus occidentalis) Proc. Bost. Soc. 

 Nat. Hist., vol. 8, Kinderhook Gr. 

 [Sig. western.] 



oviformis, Conrad, 1842, (Inoceramus 

 oviformis) Jour. Acad. Nat. Sci., vol. 

 8, Ham. Gr. [Sig. egg-shaped.] 



ponderosa, Hall, 1870, Prelim. Notice 

 Lam. shells, Up. Held. Gr. [Sig. large, 

 heavy.] 



radiata. Hall, 1877, Pal. N. Y., vol. 5, 

 Chemung Gr. [Sig. radiated.] 



sigillum, Hall, 1876, 28th Keg. Rep., Niag- 

 ara Gr. [Sig. a seal.] 



triquetra, Conrad, 1838, (Pterinea tri- 

 quetra) Ann. Rep. N. Y., Ham. Gr. 

 [Sig. a triangle.] 

 Mytilus, Linnieus, 1758, Syst. Nat., 10th ed. 

 [Ety. Mytilus, the fish mussel.] This 

 genus does not, so far as known, ex- 

 ist in palseozoic rocks. Most of the 

 species referred to it belong to the 

 genus Myalina. 



concavus. Swallow, 1858, Trans. St. Louis 

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

 cave.] 



ftmstraim, see Mvtilarca fibristriata. 



occidentalis, see Mytilarca occidentalis. 



ottawensis, Shumard, 1858, Trans. St. 

 Louis Acad. Sci., Up. Coal , Meas. 

 [Ety. proper name.] 



permiamis, see Myalina permiana. 



squamosus, Sowerby, 1839, Trans. Geol. 

 Soc. Lond., vol. 4, Permian Gr. [Sig. 

 rough, scaly.] 



tenuiradiatus, Shumard, 1858, Trans. St. 

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

 slender-rayed.] 



whitfieldanus, Winchell, 1862, Proc. 

 Acad. Nat. Sci., Marshall Gr. [Ety. 

 proper name.] Prof. Hall suggests 

 that this is a syn. for MylUarca fibris- 

 triata. 

 Naiculiles, Dawson, 1860, Acad. Geol., but 

 not defined. The name was used for 

 a genus of plants by Buckman in 

 1843. The fossils were defined by 

 Salter in 1861, under the name of 

 Anthracomya. 



angulata, see Anthracomya angulata. 



arenaceus, see A. arenacea. 



carbonarius, see A. carbonaria. 



elongata, see A. elongata. 



lievis, see A. Isevis. 



obtusa, see A. obtusa. 



malis, see A. ovalis. 

 NucuLA, Lamarck, 1815, Hist. Nat. des An. 

 sans Vert. [Ety. nucala, a little nut.] 



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

 versity W. Va., Coal Meas. [Sig. like 

 an Anodmita.'] 



arata. Hall, 1852, Stansbury's Ex. to Gr. 

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



bellatula, syn. for N. bellistriata. 



bellistriata, Conrad, 1841, (Nuculites 

 bellistriatus) Ann. Rep. N. Y., Ham. 

 Gr. [Sig. beautifully striated.] 



beyrichia, Schlotlieim, as identified by 

 Geinitz. See Niicula parva. 



corbuliformis. Hall, 1870, Prelim. Notice 

 Lam. shells, Ham. & Chemung Gr. 

 [Sig. resembling a Corbula.} 



cylindricm, syn. for Cardiomorpha mis- 

 souriensis. 



donadformis see Tellinomya donaciformis. 



fabula, see Cleidophorus fabula. 



hians. Hall, 1860, 13th Reg. Rep., Ham. 

 Gr. [Sig. gaping.] 



houghtoni, Stevens, 1858, Am. Jour. Sci., 

 vol. 25, Coal Meas. [Ety. proper 

 name.] 



hubbardi, Winchell, 1862, Proc. Acad. 

 Nat. Sci., Marshall Gr. Syn. for Nu- 

 culites sulcatinus. 



iowensis. White & Whitfield, 1862, Proc. 

 Acad. Nat. Sci., Marshall Gr. [Ety. 

 proper name.] 



kazanmsis, as identified by Geinitz is Nu- 

 culana bellistriata. 



levata, see Tellinomya levata. 



lineata, see Tellinomya lineata. 



