LAMELLIBRANCHIATA. 



197 



recurvirostris, Meek & Worthen, 1860, 



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



Meas. [Sig. beaked, recurved.] 

 squamosa, Sowerby, 1827, Trans. Geo. 



Soc. Lond., 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 Ludovicus, 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 Area.} 

 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 fibristriatus) Proc. Bost. Soc. 



Nat. Hist, Kinderhook Gr. [Sig. 



fibre-lined.] 

 mytilimeris, Conrad, 1842, (Inoceramus 



mvtilimeris) Jour. Acad. Nat. Sci., 



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



a genus of shells; meros, a part.] 

 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 Reg. Rep., Niag- 

 ara Gr. [Sig. a seal.] 

 triquetra, Conrad, 1838, (Pterinea tri- 



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



[Sig. a triangle.] 

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



[Ety. Mytilus, the fish mussel.] This 



genus does not, so far as known, ex- 

 ist in palaeozoic 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.] 



fibrhtratus, see Mvtilarca fibristriata. 



occidentalis, see Mytilarca occidentalis. 



ottawensis, Shumard, 1858, Trans. St. 

 Louis Acad. Sci., Up. Coal Meas. 

 [Ety. proper name.] 



permianus, 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 Mytilarca fibris- 

 triata. 

 Naiadites, Dawson, 1860, Acad. Geol., but 

 not defined. The name was used for 

 a gentis 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. , 



Ixvis, see A. lsevis. 



obtusa, see A. obtusa. 



oralis, see A. ovalis. 

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

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



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

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

 an Anodonta.] 



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, Schlotheim, as identified by 

 Geinitz. See Nucula parva. 



corbuliformis, Hall, 1870, Prelim. Notice 

 Lam. shells, Ham. & Chemung Gr. 

 [Sig. resembling a Corbula.} 



cylindricus, syn. for Cardiomorpha mis- 

 souriensis. 



donaciformis 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.] 



kazanensis, as identified by Geinitz is Nu- 

 culana bellistriata. 



levata, see Tellinomya levata. 



lineata, see Tellinomya lineata. 



