LAMELLIBRANCHIATA. 



anodontoides, see Modiolopsis anodon- 



toides. 

 anticostiensis, Billings, 1866, (Cyrtodonta 



(?) anticostiensis) Catal. Sil. Foss. 



Antic, Hud. Riv. Gr. [Ety. proper 



name.] 

 bayfieldi, Billings, 1858, (Vanuxemia bay- 



fieldi) Can. Nat. & Geo. vol. 4, Hud. 



Riv. Gr. [Ety. proper name.] 

 bisulccUa, see Grammysia bisulcata. 

 breviusculus, Billings, 1859, (Cyrtodonta 



breviuscula) Can. Nat. & Geo., vol. 4, 



Chazy Gr. [.Sig. very short.] 

 canadensis, Billings, 1858, (Cyrtodonta 



canadensis) Can. Nat. & Geo., vol. 3, 



Black Riv. & Trenton Gr. [Ety. proper 



name.] 

 carinatus, see Sanguinolites carinatus. 

 carinatus, Meek, 1872, (Dolabra carinata) 



Proc. Acad. Nat. Sci. Phil., Cin'ti Gr. 



This name was preoccupied, 

 cariniferus, Conrad, 1842, Jour. Acad. 



Nat. Sci., vol. 8, Chemung Gr. [Sig. 



bearing a ridge; from the strongly 



carinated umbonal slope.] 

 catskillensis, see Modiomorpha catskill- 



ensis. 

 chemungmsis, see Sanguinolites chemung- 



ensis. 

 crnicentrica, see Modiomorpha concentrica. 

 contractus. Hall, 1843, (Cypricardia con- 



tracta) Geo. Rep. 4th Dist. N. Y., 



Low. Carb. [Sig. contracted.] 

 cordiformis, Billings, 1858, (Cyrtodonta 



cordiformis) Can. Nat. & Geo., vol. 3, 



Black Riv. & Trenton Gr. [Sig. heart- 

 shaped.] 

 corrugatus, Conrad, 1842, Jour. Acad. 



Nat. Sci., vol. 8, Ham. Gr. [Sig. 



wrinkled.] 

 curtus, Conrad, 1841, Ann. Rep. N. Y., 



Cin'ti Gr. [Sig. short.] 

 dixonensis, Meek & Worthen, 1866, Proc. 



Chi. Acad. Sci., vol. 1, Trenton Gr. 



[Ety. proper name.] 

 elongatus, Conrad, 1841, Ann. Rep. N. 



Y., Up. Held. Gr. [Sig. elongated.] 

 emma, Billings, 1862, (Cyrtodonta emma) 



Pal. Foss., vol. 1, Hud. Riv. Gr. [Ety. 



proper name.] 

 ferrugineus. Hall & Whitfield, 1875, Ohio 



Pal., vol. 2, Clinton Gr. [Sig. of the 



color of rusty iron; from iron ore beds.] 

 ganti, SafFord, 1869, (Cyrtodonta ganti) 



Geo. of Tenn., Trenton & Hud. Riv. 



Gr. [Ety. proper name.] 

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



Jour.Sci.,vol. 1, Cin'ti Gr. [Ety. proper 



name.] 

 harrietta, Billings, 1862, (Cyrtodonta 



harrietta) Pal. Foss., vol. 1, Hud. Riv. 



Gr. [Ety. proper name.] 

 haynanus, SafFord, 1869, (Cyrtodonta 



hayniana) Geo. of Tenn., Trenton & 



Hud. Riv. Gr. [Ety. proper name.] 

 hindi, Billings, 1862, (Cyrtodonta hindi) 



Pal. Foss., vol. 1, Hud. Riv. Gr. [Ety. 



proper name.] 



huronensis, Billings, 1858, (Cyrtodonta 

 huronensis) Can, Nat. & Geo., vul. 3, 

 Black Riv. and Trenton Gr. [Ety. 

 proper name.] 



inconstans, Billings, 1858, (Vanuxemia 

 inconstans) Can. Nat. & Geo., vol. 3, 

 Chazy Gr. [Sig. changing.] 

 • indenta, see Cypricardinia indenta. 



inflatus, Conrad, 1842, Jour. Acad. Nat. 

 Sci., vol. 8, Onondaga Gr. [Sig. in- 

 flated.] 



insularis, Billings, 1866, (Cyrtodonta in- 

 sularis) Catal. Sil. Foss. Antic, Hud. 

 Riv. Gr. [Sig. belonging to an island.] 



islandicus. Hall, 1877, (Proposed here in- 

 stead of Cypricardites ventricoms, Hall, 

 1859) Low. Held. Gr. [Ety. from the 

 type locality, St. Joseph's Island.] 



iowensis, Owen, 1840, Rep. on Mineral 

 lands, Calciferous Gr. [Ety. proper 

 name.] 



latus, Hall, 1847, (Modiolopsis latus) Pal. 

 N. Y, vol. 1, Trenton Gr. [Sig. wide.] 



leucothea, Billings, 18 62, (Cyrtodonta 

 leucothea) Pal. Foss., vol. 1, Black 

 Riv. Gr. [Ety. mvthological name.] 



marcellmsis, see Lunulacardium marcell- 

 ense. 



modiolaris, Emmons, syn. for Modiolopsis 

 nasuta. 



montrealensis, Billings, 1859, (Vanux- 

 emia montrealensis) Can. Nat. & Geo., 

 vol. 4, Chazy Gr. [Ety. proper name.] 



mytiloides, Conrad, 1841, Ann. Rep. N. 

 Y., Ham. Gr. [Ety. from the resem- 

 blance to Mytilus.l 



nasutus, see Modiolopsis nasuta. 

 • niota, Hall, 1861, Geo. Rep. Wis., Trenton 

 Gr. [Ety. proper name.] 



obliquus, Meek & Worthen, 1868, Geo. 

 Sur. 111., vol. 3, Galena Gr. [Sig. ob- 

 lique, slanting.] 



oblongm, syn. for Modiomorpha concen- 

 trica. 



obsoletus, Hall, 1843, (Cvpricardia obso- 

 leta) Geo. Rep. 4th Dist. N. Y., Clin- 

 ton Gr. [Sig. obsolete.] 



obtusus, Hall, 1847, (Ambonychiaobtusa) 

 Pal. N. Y., vol. 1, Black Riv. and 

 Trenton Gr. [Sig. obtuse.] 



ovata, syn. for Modiolopsis modiolaris. 



plebeius, Billings, 1866, (Cyrtodonta ple- 

 beia) Catal. Sil. Foss. Antic, Hud. 

 Riv. Gr. [Sig. common.] 



ponderosus, Billings, 1862, (Cyrtodonta 

 ponderosa) Pal. Foss., vol. 1, Hud. 

 Riv. Gr. [Sig. thick, heavy.] 



quadrilateral is, Hall, 1867, 20th Reg. Rep. 

 N. Y., Niagara Gr. [Sig. four-sided.] 



radiatus, Conrad, 1841, Ann. Rep. N. Y., 

 Ham. Gr. [Ety. from the radiating 

 striae.] 



rectus, Conrad, 1841, Ann. Rep. N. Y., 

 Up. Held. Gr. [Sig. straight.] 



rectirostris. Hall, 1861, Geo. Rep. Wis'., 

 Trenton Gr. [Sig. straight-beaked.]' 



recur vus, Conrad, 1842, Jour. Acad. Nat. 

 Sci., vol. 8, Ham. Gr. [Sig. recurved.] 



