LAMELLIBRANCHIATA. 



Cucullza, Lamarck, 1801, Syst. An. [Ety. 



Cucullus, a hood.] 

 opima, syn. for Nucula lirata. 

 Cuneamya, Hall & Whitfield, 1875, Ohio 



Pal., vol. 2. [Ety. cuneus, a wedge ; 



Mva, a genus of shells.] 

 miamiensis, Hall & Whitfield, 1875, Ohio 



Pal., vol. 2, Cin'ti Gr. [Ety. proper 



name.] 

 scapha, Hall & Whitfield, 1875, Ohio Pal., 



vol. 2, Cin'ti Gr. [Sig. a skiff or boat] 

 Cvcloconcha, S. A. Miller, 1874, Cin. Quar. 



Jour. Sci., vol. 1. [Ety. in allusion 



to the nearly circular form of the 



shell.] 

 mediocardinalis, S. A. Miller, 1874, Cin. 



Quar. Jour. Sci., vol. 1, Cin'ti Gr. 



[Ety. in allusion to the position of the 



cardinal teeth near the middle of the 



hinge line.] 

 Cypbicardia, Lamarck, 1801, Syst. An. sans 



Vert. [Ety. from the two genera 



Oyprina and Cardium.} 

 aiata, see Modiomorpha alata. 

 angusta, see Cypricardites angustus. 

 angustata, see Cypricardites angustatus. 

 chouteauensis, Swallow, 18(53, Trans. St. 



Louis Acad. Sci., Chemung Gr. [Ety. 



proper name.] 

 contracts, see Cypricardites contractus, 

 indianensis, Hall, 1858, Trans. Alb. Inst, 



vol. 4, Warsaw Gr. [Ety. proper 



name.] 

 insecta, Dawson, 1868, Acad. Geol., Car- 

 boniferous. [Sig. cut into.] 

 leidyi, Lea, see Leaia leidyi. 

 obsokta, see Cypricardites obsoletus. 

 occidentalis, Hall, 1»52, Statis. Ex. to 



Great Salt Lake, Coal Meas. [Sig. 



wpstcrn "1 

 occidentalis, Swallow, 18 6 3, Trans. St. 



Louis Acad. Sci., Carb. This name 



was preoccupied, 

 pikensis, Swallow, 1863, Trans. St. Louis 



Acad. Sci., Coal Meas. [Ety. proper 



name.] 

 plicatula, Swallow, 1858, Trans. St. Louis 



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



having small plications.] 

 rhembea, see Cypricardites rhombeus. 

 rigidi, see Sanguinolites rigidi. 

 Bhumardana, Swallow, 1863, Trans. St. 



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



proper name.] 

 subplana, Hall, 1858, Trans. Alb. Inst., 



vol. 4, Warsaw Gr. [Sig. somewhat 



flat] 

 ventricosa, Hall, 1860, 13th Reg. Rep. 



N. Y., Ham. Gr. [Sig. ventricose.] 

 wheeleri, see Schizodus wheeleri. 

 Cypbicardella, Hall, 1858, Trans. Alb. 



Inst, vol. 4. [Ety. diminutive of 



Oypricardia.} 

 nucleata, Hall, 1858, Trans. Alb. Inst, 



vol. 4, Warsaw Gr. [Sig. like a kernel.] 

 oblonga, Hall, 1858, Trans. Alb. Inst., 



vol. 4, Warsaw Gr. [Sig. oblong.] 



plicata, Hall, 1858, Trans. Alb. Inst., vol. 

 4, Warsaw Gr. [Sig. folded, plicated.! 



subelliptica, Hall, 1858, Trans. Alb. Inst.^ 

 vol. 4, Warsaw Gr. [Sig. somewhat 

 elliptical.] 

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

 3. [Ety. Cypricardinia, from its re- 

 semblance to Cypricardia.} 



arata, Hall, 1867. 20th Reg. Rep. N. Y., 

 Niagara Gr. [Sig. plowed.] 



carbonaria, Meek, 1871, Proc. Acad. Nat. 

 Sci. Phil., Coal Meas. [Sig. pertain- 

 ing to coal.] 



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

 Low. Held. Gr. [Sig. from the con- 

 centric ridges that mark the surface.] 



crassa, Hall, 1859, Pal. N. Y., vol.3, Low. 

 Held. Gr. [Sig. thick, from the thick 



(?) cylindrica, Hall, 1872, 24th Reg. Rep. 

 N. Y., Corniferous Gr. [Sig. cylin- 

 drical.] 



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

 Devonian. [Sig. distinct.] 



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

 Low. Held. Gr. [Sig. high-backed.] 



indenta, Conrad, 1842, (Cypricardites in- 

 denta) Jour. Acad. Nat. Sci., vol. 8, 

 Up. Held. Gr. [Sig. indented.] 



inflata, Emmons, 1842, (Nuculitesinflata) 

 Emmons' Geo. Rep. N. Y., Trenton 

 Gr. [Sig. swollen out, inflated.] 



inflata war. subsequivalvis, Hall, 1872, 24th 

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

 valves somewhat equal.] 



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

 Up. Held. Gr. [Sig. in allusion to 

 the distant lamellae on the surface.] 



planulata, Conrad, 1842, (Pterinea planu- 

 lata) Jour. Acad. Nat. Sci., vol. 8, Low. 

 Held. Gr. [Sig. flattened.] 



pygmsea, Conrad, 1842, (Pterinea pyg- 

 msea) Jour. Acad. Nat. Sci., vol. 8, Up. 

 Held. Gr. [Sig. a pigmy, very small.] 



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

 3, Low. Held. Gr. [Sig. somewhat 

 lamellose; from the concentric strise 

 on the surface.] 

 Cypricardites, Conrad, 1841, Ann. Geo. Rep. 

 N. Y. [Ety. from resemblance to the 

 genus Cypricardia.] 



acutumbonus, Billings, 1866, (Cyrtodonta 

 acutumbona) Catal. Sil. Foss. Antic, 

 Anticosti Gr. [Ety. from the strongly 

 carinatetl, or sharp-keeled umbones.] 



alta, see Modiomorpha alta. 



alveatus,Conrad, 1843,Geo. Rep. 3rd Dist. 

 N. Y., Ham. Gr. [Sig. hollowed out.] 



amygdalinus, Hall, 1847, (Ambonychia 

 amygdalina) Pal. N. Y., vol. 1, Black 

 Riv. and Trenton Gr. [Sig. like an 

 almond.] 



angustus, Hall, 1843, (Cypricardia angus- 

 ta) Geo. Rep. 4th Dist. N. Y., Clinton 

 Gr. [Sig. narrow, slender.] 



angustatus, see Modiomorpha angustata. 



angustifrons, syn. for Modiolopsis modiol- 



