RHY.] 



BRACHIOPODA. 



367 



FIG. 605. Retzia 

 mormoni. 



meekana, Shumard, 1858, Trans. St. 

 Louis Acad. Sci , vol. 1, p. 295, Per- 

 mian Gr. 



mormoni, Marcou, 1858, (Terebratula 

 mormonii,) Geo. N. 

 Amer., p. 51, Coal 

 Meas. This species 

 was subsequ ently, 

 though in the same 

 year, described by 

 Shumard under the 

 name R. punctilifera. 



osagensis, Swallow, 1860, Trans. St. Louis 

 Acad. Sci., vol. 1, p. 653, Waverly or 

 Choteau Gr. 



papillata, Shumard, 1858, Trans. St. 

 Louis Acad. Sci., vol. 1, p. 294, Per- 

 mian Gr. 



popana, Swallow, 1860, Trans. St. Louis 

 Acad. Sci., vol. 1, p. 654, Waverly or 

 Choteau Gr. 



punctilifera, Shumard, 1858, syn. for Retzia 

 mormoni. 



polypleura, Winchell, 1862, Proc. Acad. 

 Nat. Sci., 2d ser., vol. 6, p. 406, Port- 

 age Gr. 



sexplicata, White & Whitfield, 1862, Proc. 

 Boat. Soc. Nat. Hist., vol. 8, p. 294, Kin- 

 derhook Gr. 



sinuata, Hall, 1860, (Rhynchospira sin- 

 uata,) Can. Nat. and Geol., vol. 5, 

 Up. Sil. 



subglobosa, Hall, 1867, (Rhynchospira 

 subglobosa,) Pal. N. Y., vol. 4, p. 421, 

 Up. Held. Gr. 



subglobosa, McChesney, syn. for Retzia mor- 

 moni. 



vera, see Eumetria vera. 



vera var. costata, see Eumetria vera var. 

 costata. 



verneuilana, see Eumetria verneuilana. 



woosteri, White, 1879, Bull. U. S. Sur., 

 vol. 5, No. 2, p. 215, and Cont. to Pal., 

 No. 6, p. 134, Coal Meas. 

 RHYNCHONELLA, Fischer, 1809, Mem. Soc. 

 Imp. Mosc., vol. 2, p. 35. [Ety. rhyn- 

 chos, beak; ella, little.] Shell oval or 

 trigonal, subglobose, with or without 

 mesial fold and sinus ; surface plicated ; 

 beak of ventral valve acute, entire, 

 prominent, curved ; foramen under the 

 beak, by the incurving of which it is 

 sometimes closed, partly surrounded by 

 a deltidium, which is composed of two 

 pieces ; two teeth in the ventral valve, 

 supported by dental plates, which ex- 

 tend to the bottom of the valve ; two 

 sockets in the dorsal valve ; apophyses 

 two, short, flattened, curved, attached to 

 the hinge plate; adductor scars four, 

 separated by a mesial ridge; pedicle 

 scars on the cardinal plates ; pedicle 

 muscles of the ventral valve in a saucer- 

 shaped cavity at the base of the dental 

 plates ; shell impunctate. Type R. 

 loxia. 



abrupta, Hall, 1857, 10th Rep. N. Y. St. 

 Mus. Nat. Hist., p. 68, and Pal. N. Y., 

 vol. 3. p. 228, Low. Held. Gr. 



acadiensis, Davidson, 1863, Quar. Jour. 



Geo. Soc., vol. 19, p. 172, Low Carb. 

 acinus, Hall, 1863, Trans. Alb. Inst., vol. 



4, p. 215, Niagara Gr. 

 acutiplicata, Hall, 1857, N. Y. St. Mus. Nat. 



Hist., p. 73, and Pal. N. Y. f vol. 3. p. 



232, Low Held. Gr. 

 acutirostris, Hall, 1847, (Atrypa acuti- 



rostra,) Pal. N. Y., vol. 1, p. 21, 



Chazy Gr. 

 aequivalvis, Hall, 1857, 10th Rep. N. Y. 



St. Mus. Nat. Hist., p. 66, and Pal. N. Y., 



vol. 3, p. 224, Low. Held. Gr. 

 sequiradiata, Hall, 1852, (Atrypa aequira- 



diata,) Pal. N. Y., vol. 2, p. 70, Clin- 

 ton Gr. 

 ainslsei, Winchell, 1886, 14th Ann. Rep. 



Geo. Minn., p. 315, Trenton Gr. 

 algeri, McChesney, 1860, New Pal. Foss. 



Carb. Not recognized, 

 altilis, Hall, 1847, (Atrypa altilis,) Pal. 



N. Y., vol. 1, p. 23, Chazy Gr. 

 altiplicata, Hall, 1857, 10th Rep. N. Y. 



St. Mus. Nat. Hist., p. 72, and Pal. N. Y., 



vol. 3, p. 231, Low Held. Gr. 

 alveata, see Centronella alveata. 

 ambigua, Calvin, 1878, Bull. U. S. Geo. 



Sur., vol. 4, No. 3, p. 729, Low. De- 

 vonian. 

 angulata, Linnaeus, as identified by Gei- 



nitz, syn. for Syntrielasma hemipli- 



catum. 

 anticostiensis, Billings, 1862, Pal. Foss., 



vol. 1, p. 142, Hud. Riv. Gr. 

 aprinis, DeVerneuil, 1845, (Terebratula 



aprinis,) Geo. Russia and Ural Mts., 



vol. 2, p. 90, and Pal. N. Y., vol. 2, p. 



280, Niagara Gr. 

 arctirostrata, Swallow, 1863, Trans. St. 



Louis Acad. Sci., vol. 2, p. 84, Kaskas- 



kia Gr. 

 argentea, Billings, 1866, Catal. Sil. Foss. 



Antic., p. 43, Anticosti Gr. 

 argenturbica, White, 1874, Rep. Invert. 



Foss., p. 14, and Geo. Sur. W. 100th 



Mer., vol. 4, p. 75, Hud. Riv. Gr. 

 aspasia, Billings, 1863, Proc. Port. Soc. 



Nat. Hist., vol. 1, p. Ill, Low. Held. Gr. 

 barquensis, Winchell, 1862, Proc. Acad. 



Nat. Sci., p. 408, Marshall Gr. 

 barrandi, Hall, 1857, 10th Rep. N. Y. St. 



Mus. Nat. Hist., p. 82, and Pal. N. Y., 



vol. 3, p. 442, Oriskany sandstone, 

 bialveata, Hall, 1857, 10th Rep. N. Y. St. 



Mus. Nat. Hist., p. 73, and Pal. N. Y., 



vol. 3, p. 233, Low. Held. Gr. 

 bidens, Hall, 1852, (Atrypa bidens,) Pal. 

 ' N. Y., vol. 2, p. 69, Clinton Gr. 

 bidentata, Hisinger, 1826, (Terebratula 



bidentata,) Vet. Acad. Handl., p. 343, 



and Pal. N. Y., vol. 2, p. 276, Niag- 

 ara Gr. 



billingsi, see Stenoschisma billingsi. 

 boonensis, Shumard, 1855, Geo. Rep. Mo., 



p. 205, Burlington Gr. 

 brevirostris, see Pentamerus brevirostris. 

 campbellana, Hall, 1857, 10th Rep. N. Y. 



St. Mus. Nat. Hist., p. 79, and Pal. N. Y., 



vol. 3, p. 239, Low. Held. Gr. 



