LAMELLIBRANCHIATA. 



cuneatus, Conrad,1838, (Pterinea cuneata) 

 Ann. Rep. N. Y., Ham. Gr. [Sig. 

 wedge-shaped.] 

 cylindricus, Winchell, 1863, Proc. Acad, 

 Nat. Sci., Marshall Gr. [Sig. cylin- 

 drical.] 

 flavins, Hall, 1870, Prelim. Notice Lam. 

 shells, Waverly Gr. [Ety. proper 

 name.] 

 glaucus, Hall, 1870, Prelim. Notice Lam. 

 shells, Ham. Gr. [Ety. mythological 

 name.] 

 Juimiltonensis, see Goniophora hamilton- 



ensis. 

 ida. Hall, 1870, Prelim. Notice Lam. 

 shells, Ham. Gr. [Ety. mythological 

 name.] 

 iowensis, Winchell, 1863, Proc. Acad. 

 Nat. Sci., Chemung Gr. [Ety. proper 

 name.] 

 jejunus, Winchell, 1863, Proc. Acad. Nat. 

 Sci., Chemung Gr. [Sig. scanty, poor.] 

 marshallensis, Winchell, 1862, Proc. Acad. 

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

 name.] 

 missouriensis. Swallow, 1860, (Solen (?) 

 missouriensis) Trans. St. Louis Acad. 

 Sci., Low. Carb. [Ety. proper name.] 

 nasutus, Meek, 1871, Am. Jour. Conch., 

 vol. 7, Low. Carb. [Sig. having a 

 prominent nose.] 

 obliquus. Meek, 1871, Proc. Acad. Nat. 



Sci., Waverly Gr. [Sig. oblique.] 

 perangulatus. Hall, 1870, Prelim. Notice 

 Lam. shells, Schoharie grit. [Sig. very 

 angular.] 

 ponderosus, Hall, 1870, Prelim. Notice 

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

 bulky, heavv.] 

 rigidus, White & Whitfield, 1862, (Cypri- 

 cardia rigidi) Pr,oc. Bost. Soc. Nat. 

 Hist., Kinderhook Gr. [Sig. rigid.] 

 sanduskyensis. Meek, 1871, Proc. Acad. 

 Nat. Sci., Corniferous Gr. [Ety. proper 

 name.] 

 Bolenoides, Hall, 1870, Prelim. Notice 

 Lam. shells. Ham. Gr. [Sig. like a 

 shell of the genus Solen.] 

 strigatus, Winchell, 1865, Proc. Acad. 

 Nat. Sci., Chemung Gr. [Sig. fur- 

 rowed.] 

 subtortuosus. Hall, 1870, Prelim. Notice 

 Lam. shells. Ham. Gr. [Sig. some- 

 what twisted.] 

 sulcifer, Winchell, 1866, Rep. Low Pen 

 insula Mich., Ham. Gr. [Sig. bearing 

 furrows.] 

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

 Devonian. [Ety. mythological name.] 

 truncatus, Conrad, 1842, (Cypricardites 

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

 8, Ham. Gr. [Sig. truncated.] 

 undatus. Hall, 1870, PreUm. Notice Lam. 



shells, Chemung Gr. [Sig. wavy.] 

 unioniformis, Winchell, 1862, Proc. 

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

 like a shell of the genus Unio.'] 



valvulus. Hall, 1870, Prelim. Notice Lam. 

 shells, Waverly Gr. [Sig. having 

 small valves, a potl.] 

 ventricosus. White & Whitfield, 1862, 

 Proc. Bost. Soc. Nat. Hist., Chemung 

 and Kinderhook Gr. [Sig. ventricose. J 

 ScHizoDus, King, 1844, Ann. Mag. Nat. Hist., 

 vol. 14. [Ety. schizo, I split ; odous, a 

 tooth.] 

 amplus, Meek & Worthen, 1870, Proc. 

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

 full, large.] 

 appressm, see Cytherodon appressus. 

 cayuga, Hall, 1870, Prelim. Notice Lam. 

 shells. Ham. Gr. [Ety. proper name.] 

 chemungensis, Conrad, 1842, (Nuculites 

 chemungensis) Jour. Acad. Nat. Sci., 

 vol. 8, Chemung Gr. [Ety. proper 

 name.] 

 chesterensis. Meek & Worthen, 1865, 

 Proc. Acad. Nat. Sci. Phil., Chester 

 Gr. [Ety. proper name.] 

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



Coal Meas. [Sig. wedge-shaped.] 

 curtus, Meek & Worthen, 1866, Proc. Chi. 



Acad. Sci., Coal Meas. [Sig. short.] 

 ellipticus. Hall, 1870, Prelim. Notice Lam. 



shells. Ham. Gr. [Sig. elliptical.] 

 gregarius. Hall, 1870, Prelim. Notice Lam. 



shells, Ham. Gr. [Sig. gregarious.] 

 medinaensis. Meek, 1871, Proc. Acad. Nat. 

 Sci. Phil., vol. 23, Waverly Gr. [Ety. 

 proper name.] 

 oblatus. Hall, 1870, Prelim. Notice Lam. 



shells, Chemung Gr. [Sig. oblate.] 

 ohsGurus, see Schizodus wheeleri. 

 ovatus. Meek & Hayden, 1858, (Axinus 

 ovatus) Proc. Acad. Nat. Sci. Phil., . 

 Permian Gr. [Sig. ovate.] 

 perelegans, Meek & Worthen, 1870, Proc. 

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

 very elegant.] 

 quadrangularis. Hall, 1870, Prelim. Notice 

 Lam. shells, Chemung Gr. [Sig. 

 quadrangular.] 

 rhombeus. Hall, 1870, Prelim. Notice 

 Lam. shells. Ham. Gr. [Sig. rhomb- 

 shaped.] 

 rossicus, Verneuil, 1845, Geo. Russ., vol. 

 2, Permian Gr. [Ety. proper name.] 

 triangularis. Swallow, 1858, Trans. St. 

 Louis Acad. Sci., Permian Gr. [Sig. 

 triangular.] 

 tumidus, see Cytherodon tumidus. 

 wheeleri, Swallow, 1862, (Cypricardia (?) 

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

 Coal Meas. [Ety. proper name.] 

 Sedgwickia, McCoy, 1844, Synop. Carb. Foss. 

 Ireland. [Ety. proper name.] 

 aitirostrata. Meek & Hayden, 1858, (Al- 

 lorisma (?) aitirostrata) Proc. Acad. 

 Nat. Sci. Phil., Coal Meas. [Sig. high- 

 beaked.] 

 (?) compressa. Meek, 1872, Proc. Acadi 

 Nat. Sci. Phil., Cin'ti Gr. [Sig. com- 

 pressed.] 



