200 



LAMELLIBRANOHIATA. 



elliptica var. occidentalis, Hall, 1872, 24th 



Reg. Rep., Up. Held. Gr. [Sig. 



western.] 

 lirata, Conrad, 1838, (Posidonia lirata) 



Ann. Rep. N. Y., Corniferous Gr. 



[Sig. fnrrowed.] 

 ohioensis, Meek, 1871, Proc. Acad. Nat. 



Sci. Phil., Cornif. Gr. [Ety. proper 



name.] 

 sabini, White, 1876, Proc. Acad. Nat. Sci., 



Devonian. [Ety. proper name.] 

 Peclcn-, Mueller, 1776. This genus is un- 

 known in the Palfeozoic rocks. 

 arulinlatus, see Aviculopecten acutialatus. 

 armujerus, see A. armigerus. 

 niirulahiif, see A. aviculatus. 

 broadheadi, syn. for Aviculopecten car- 



boniferus. 

 canceUalui, see Aviculopecten cancellatus. 

 carboniferus, see A. carboniferus. 

 chvelatidicus, see A.' clevelandicus. 

 coloradoeiuis, see A. coloradoensis. 

 convexus, see A. convexus. 

 rrmulatiiK, see Pernopecten crenulatus. 

 dolahriformis, see Aviculopecten dolabri- 



formis. 

 dupUca-tvs, see A. duplicatus. 

 halli, see A. halli. 

 hairni, syn. for A. carboniferus. 

 miisouriensu, see A. missouriensis. 

 nrc/hctus, see A. neglectus. 

 occidnilalu, see A. occidentalis. 

 providenceniis, see A. providenre.nsis. 

 radialif, see Pseudomonotis radialis. 

 ringens, see Aviculopecten ringens. 

 striatue, see A. striatus. [ata. 



tenuUinenliijf, see Strebloptcria tenuiline- 

 utaherms, see Aviculopecten utahensis. 

 Pbbnopectkn, Winchell, 1865, Proc. Acad. 



Nat. Sci. Phil. [Ety. from the shells 



Perna and Pecten.] 

 crenulatus. Hall, 1843, (Pecten crenula- 

 tus) Geo. Rep. 4th Dist. N. Y., Che- 



nmng Gr. [Sij;. crenulated.] 

 fasciculatus. Hall, 1877, Pal. N. Y., vol. 



5, Chemung Gr. [Sig. fasciculated.] 

 glaber. Hall, 1843, (Lima glaber) Geo. 



Rep. 4th Dist. N. Y., Chemung Gr. 



[Sig. smooth.] 

 limiformis, White & Whitfield, 1862, 



(Aviculopecten limaformis) Proc. 



Bost. Soc. Nat. Hist., vol. 8, St. Louis 



Gr. [Sig. like a shell of the genus 



Lima.] 

 limatus, Winchell, 1865, Proc. Acad. Nat. 



Sci., Chemung Gr. [Sig. polished.] 

 obsoletus. Hall, 1843, (Lima obsoleta) 



(ieo. Rep. 4th Dist. N. Y., Chemung 



Gr. [Sig. obsolete.] 

 shumardanus, Winchell, 1865, Proc. 



Acad. Nat. Sci. Phil., Kinderhook 



Gr. [Ety. proper name.] 

 Pholadblla, Hall, 1870, Prelim. Notice 



Lam. shells. [Ety. diminutive of the 



recent genus Plwlas.} 

 cuneata. Hall, 1870, Prelim. Notice Lam. 



shells, Kinderhook Gr, [Sig. wedge- 

 shaped.] 



newberryi. Hall, 1870, Prelim. Notice 



Lam. shells, Waverly Gr. [Ety. proper 



name.] 

 omata. Hall, 1870, Prelim. Notice Lam. 



shells, Chemung Gr. [Sig. orna- 

 mented.] 

 radiata, Conrad, 1842, (Nuculites radiata) 



Jour. Acad. Nat. Sci., vol. 8, Ham. 



Gr. [Sig. radiated.] 

 truncata, Hall, 1870, Prelim. Notice Lam. 



shells. Ham. Gr. [Sig. truncated.] 

 Phthonia, Hall, 1870, Prelim. Notice Lam. 



shells, 

 nodicostata. Hall, 1870, Prelim. Notice 



Lam. shells. Ham. Gr. [Sig. from the 



nodes on the costa;.] 

 sectifrons, Conrad, 1842, (Cypricardites 



sectifrons) Jour. Acad. Nat. Sci., Ham. 



Gr. [Sig. having a divided front.] 

 Pinna, Linnfeus, 1758, Syst. Nat, 10th Ed. 



[Ety. pinna, a feather.] 

 adamsi, syn. for Pinna peracuta. 

 hinrichsana, White & St. John, 1868, 



Trans. Chi. Acad. Sci., St. Louis Gr. 



[Ety. proper name.] 

 marshallensis, Winchell, 1865, Proc.Acad. 



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



name.] 

 missouriensis. Swallow, 1863, Trans. St. 



Louis Acad. Sci., Low. Carb. [Ety. 



proper name.] 

 peracuta, Shumard, 1858, Trans. St.Louis 



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



acute.] 

 subapatulata, Worthen, 1875, Geo. Sur. 



111., vol. 6, Warsaw Gr. [Sig. some- 

 what spatulate or blade-shaped.] 

 Pinnopsis, syn. for Lunulacardium. 



acutirostra, see Lunulacardium acutirost- 



rum. 

 ornatu!<, see Lunulacardium ornatum. 

 Placunopsis, Morris & Lycett, 1853, Monogr. 



Foss. Great Oolite. [Ety. Placuna, a 



genus of shells; o?«is, resemblance.] 

 carbonaria, Meek & AWirtlien, 1866, Proc. 



Chi. Acad. Sci., vol. 1, Up. Coal Meas. 



[Sig. peitaining to coal.] 

 recticardinalis. Meek, 1875, Ohio Pal., 



vol. 2, Coal Meas. [Sig. straight on 



the cardinal line.] 

 Pleukophokus, King, 1844, Ann. Mag. Nat. 



Hist., vol. 14. [Ety. pleuron, a rib ; 



phoros, bearing.] 

 angulatus. Meek & Worthen, 1865, Proc. 



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



angulated.] 

 calhouni, Meek & Hayden, 1858, (Ed- 



monia calhouni) Trans. Alb. Inst., 



vol. 4, Permian Gr. [Ety. proper 



name.] 

 costatiformis. Meek & Worthen, 1865, 



Proc. Acad. Nat. Sci. Phil., Keokuk 



Gr. [Sig. like P. cosiatm.} 

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



Meas. [Sig. oblong.] 

 occidentalis. Meek & Hayden, 1862, Trans. 



Alb. Inst., vol. 4, Coal Meas. [Sig. 



western.] 



