1006 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



PLEUROCYSTITES Continued. 



Pleurocystis Carpenter, Jour. Linn. Soc. Zool., 24, 1891, p. 12. Haeckel, Amphor 

 u. Cystoid, 1896, p. 44, pi. 2, figs. 15, 16. Bather Treatise on Zool., pt. 3, 

 Echinoderma, London, 1900, p. 64, fig. 34. 



Pleurocystites anticostiensis Billings. 



Pleurocystites anticostiensis Billings, Geol. Surv. Canada, Rep. Progress for 1853- 



1856, 1857, p. 288; Geol. Surv. Canada, dec. 3, 1858, p. 52, pi. 1. fig. 3; Cat. Sil. 



Foss. Anticosti, Geol. Surv. Canada, 1866, p. 8. 

 Pleurocystites squamosus var. anticostiensis Jaekel, Stammesgesch. d. Pelmat., 



1899, p. 234. 

 Pleurocystis anticostiensis Bather, Trans. Roy. Soc. Edinburgh, 49, pt. 2, 1913, 



p. 468. 

 Richmond (Charleton): Charleton Point, Anticosti. 



Pleurocystites elegans Billings. 



Pleurocystites elegans Billings, Geol. Surv. Canada, Rep. Progr. for 1853-1856, 

 1857, p. 287; Geol. Surv. Canada, dec. 3, 1858, p. 51, pi. 2, figs. 2a-c. 

 Chapman, Canadian Jour., n. e., 4, 1859, p. 45. Billings, Trans. Ottawa 

 Field Nat. Club, 1, 1881, p. 34. Jaekel, Stammesgesch. d. Pelmat., 1899, 

 p. 234. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 466. 



Pleurocystis elegans Bather, Trans. Roy. Soc. Edinburgh, 49, 1913, p. 466, fig. 67. 



Trenton: Ottawa, Ontario. 



Pleurocystites exornatus Billings. 



Pleurocystites exornatus Billings, Geol. Surv. Canada, Rep. Progr. for 1853-1856, 



1857, p. 287; Geol. Surv. Canada, dec. 3, 1858, p. 52. Chapman, Canadian 

 Jour., n. s., 4, 1859, p. 45. 



Pleurocystites filitextus var. exornata Jaekel, Stammesges. Pelmat., 1, 1899, p. 



235. 



Pleurocystis exornata Bather, Trans. Roy. Soc. Edinburgh, 49, pt. 2, 1913, p. 467. 

 Trenton: Near Montreal, Quebec. 



Pleurocystites filitextus Billings. 



Pleurocystites filitextus Billings, Canadian Jour., 2, 1854, p. 252, figs. 13, 14; Geol. 

 Canada, Rep. Progr. for 1853-1856, 1857, p. 286; Geol. Surv. Canada, dec. 3, 



1858, p. 50, pi. 2, figs, la, lb. Chapman, Expos. Min. Geol. Canada, 1864, 

 p. 109. Billings, Trans. Ottawa Field Nat. Club, 1, 1881, p. 34. Jaekel, 

 Stammesg. Pelmat., 1, Thecoidea u. Cystoidea, Berlin, 1899, p. 232, fig. 45; p. 

 234, pi. 12, figs. 3-5. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 466. 



Pleurocystis filitextus Haeckel, Amphorideen und Cystoideen, 1896, p. 44, pi. 2, 

 figs. 15, 16. Bather, Treatise on Zool., pt. 3, Echinoderma, London, 1900, 

 p. 65, fig. 34. Kirk, Proc. U. S. Nat. Mus., 41, 1911, pi. 2, fig. 4; pi. 3, fig. 3. 



Trenton (Curdsville) : Ottawa, Ontario; Hull, Quebec. 



PLEUROCYSTITES FILITEXTUS var. EXORNATA Jaekel. See Pleurocystites exornatus. 



Pleurocystites mercerensis Miller and Gurley. 



Pleurocystites mercerensis Miller and Gurley, Bull. Illinois State Mus. Nat. 



Hist., 6, 1895, p. 60, pi. 5, figs. 25, 26. Miller, N. A. Geol. Pal., 2d App., 



1897, p. 751, fig. 1379. Jaekel, Stammes. Pelmat., 1, Thecoidea u. Cystoidea, 



Berlin, 1899, p. 234. 

 Pleurocystis mercerensis Bather, Trans. Roy. Soc. Edinburgh, 49, pt. 2, 1913, 



p. 468. 

 Trenton (Curdsville): Mercer County, Kentucky. 



PLEUROCYSTITES ROBUSTUS Billings. See Pleurocystites squamosus robustus. 



