BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 571 



GRAPTOSPONGIA Ruedemann. Genotype: G. pusilla Ruedomann. 



Graptospongia Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, p. 485. 



Graptospongia pusilla Ruedemann. 



Graptospongia pusilla Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, 



p. 485, figs. 467, 468. 

 Chazyan (Normanskill) : Schuylerville, Saratoga County, New York. 



GREENFIELDIA Grabau. See Hindella subgenus Greenfieldia. 

 GYPIDIA UNGUIFORMIS Ulrich. See Conchidium unguiforme. 

 GYPIDULA Dalman. See Conchidium Linnaeus. 



GYPIDULA Hall. Genotype: Pentamerus occidentalis Hall. 



Gypidula Hall, 20th Rep. New York State Cab. Nat. Hist., 1867, p. 163; Pal. 

 New York, 4, 1867, pp. 373, 380. Zittel, Handb. Pal., 1, 1880, p. 694. Wal- 

 cott, Mon. U. S. Geol. Surv., 8, 1884, p. 161. Miller, N. A. Geol. Pal., 1889, 

 p. 346. Schuchert, Zittel-Eastman Textb. Pal., 1, 1900, p. 322. 



Sieberella (Ehlert, Fischer's Man. Conch., 1887, p. 1311. 



Gypidula and Sieberella Hall and Clarke, Pal. New York, 8, pt. 2, 1893, p. 245; 

 13th Ann. Rep. New York State Geol., 1895, pp. 845, 846. 



Gypidula (Sieberella) coeyinanensis corriganensis Maynard. 



Gypidula (Sieberella) coeymanensis var. corriganensis Maynard, Maryland Geol. 



Surv., Low. Dev., 1913, p. 345, pi. 62, figs. 12-18. 

 Helderbergian (Keyser): Devils Backbone, near Cumberland, Maryland; Key- 



ser, West Virginia. 



Gypidula (Sieberella) coeymanensis prognostica Maynard. 



Gypidula (Sieberella) coeymanensis var. prognostica Maynard, Maryland Geol. 



Surv., Low. Dev., 1913, p. 344, pi. 62, figs. 9-11. Holtedahl, Second Arct. 



Exped. "Fram," 1898-1902, No. 32, 1914, p. 21, pi. 7, fig. 5. 

 Helderbergian (Keyser): Pinto, Cumberland, Hancock, etc., Maryland; Keyser, 



West Virginia; Hyndman, Pennsylvania; Southwestern Ellesmereland, 



Arctic America. 



Gypidula coppingerl (Etheridge). 



Pentamerus coppingeri Etheridge, Quart. Jour. Geol. Soc. London, 34, 1878, p. 



594, pi. 25, figs. 2, 3. 



Gypidula coppingeri Schuchert, Bull. IT. S. Geol. Surv., 87, 1897, p. 226. 

 Niagaran: Offley Island, Arctic America. 



Gypidula (Sieberella) galeata (Dalman). 



Atrypa galeata Dalman, Kongl. Svenska, Vet.-Akad. Handl., for 1827, 1828, p. 46, 



pi. 5, fig. 4. Troost, 6th Geol. Rep. Tennessee, 1841, p. 15. Vanuxem, Geol. 



New York, Rep. 3d Dist., 1842, p. 117, fig. 1. Castelnau, Essai Syst. Sil. 



I'Am&ique Septentrionale, 1843, p. 39, pi. 14, fig. 4. 

 Pentamerus galeatus Hall, 10th Rep. New York State Cab. Nat. Hist., 1857, p. 



105, figs. 1-3. Rogers, Geol. Pennsylvania, 2, pt. 2, 1858, p. 825, fig. 646. 



Hall, Pal. New York, 3, 1859, p. 257, pi. 46, fig. 1; pi. 47, fig. 1. Billings, 



Geol. Canada, 1863, p. 957, fig. 454. Lesley, Geol. Surv. Pennsylvania, Rep. 



P 4, 1889, p. 616, fig. Sherzer, Michigan Geol. Surv., 7, 1900, pt. 1, p. 224. 

 Pentamerus galeatus var. Whiteaves, Cont. to Canadian Pal., 1, 1891, p. 234. 

 Sieberella galeatus Hall and Clarke, Pal. New York, 8, pt. 2, 1893, p. 246, fig. 



175; pi. 72, figs. 7-13. 



