318 SYNOPSIS OF AMERICAN FOSSIL BKACHIOPODA. [bull. 87. 



Productella speciosa llall — Continued. 



Proiluctus (I'luthictella) wpcciosuaf Herrick, Bull. Denison Univ., Ill, 1888, p. 34. 

 Loc. Leon, New Albion, and Ithaca,, New York; Licking County, Ohio; Burling- 

 ton, Iowa; Eureka tli.strict, Nevada. 



Productella spinulicosta llall. Coriiiferous to Hamilton (Dev.). 



Productius sul)ii(;uliatus Norwood and Pratteu (nou Murchisou), Jour. Acad. Nat. 



Sci. Philadelphia, III, 1854, p. 21.— Meek, King's U. S. Geol. Expl. 40th Pari., 



IV, 1877, p. 36, pi. 3, iig. 7. 



Produttua subacnleatus? Meek, Simpson's Kep. Expl. Great Basin Terr. Utah, 

 1876, p, 345, ])1. 1, fig. 3. 



Productus spmulicostus Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 173. 



Productella spinulicosta Hall, Pal. New York, IV, 1867, p. 160, pi. 23, figs. 6-8, 

 25-34 ;— Second Ann. Rep. N. Y. State Geol., 1883, pi. 48, figs. 3-6.— Whiteaves, 

 Cont. Canadian Pal., I, 1891, p. 217, pi. 29, fig. 3; pi. 31, fig. 1.— Hall and 

 Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 17, figs. 3-6. 



Productella subaculeata Hall, Pal. New York, IV, 1867, p. 154, pi. 23, figs. 4, 5. — 

 Whiteaves, Cont. Canadian Pal., I, 1892, p. 283.— Hall and Clarke, Pal. New 

 York, VIII, Pt. I, 1892, pi. 17, figs. 1, 2. 



Productella subaculeata? Hall, Second Ann. Rep. N. Y. State Geol., 1883, pi. 48, 

 tigs. 1, 2. 



Productus (Productella) subaculeata Walcott, Mon. U. S. Geol. Survey, VIII, 

 1884, pp. 128, 214, pi. 7, fig. 2; pi. 13, figs. 19, 20. 



Productus (Productella) subaculeatus var. cataractus Hall and Whitfield, Twenty- 

 fourth Rep. N. Y. State Cab. Nat. Hist., 1872, p. 198 ;— Twenty-seventh Rep. 

 Ibidem, 1875, pi. 9, figs. 9,10. 



Productella subaculeata var. cataracta Nettelroth, Kentucky Fossil Shells, Mem. 

 Kentucky Geol. Survey, 1889, p. 69, pi. 17, figs. 5-9. — Whiteaves, Cont. 

 Canadian Pal., I, 1891, p. 217. 



Loc. New York ; Ohio ; Falls of Ohio ; Illinois ; Iowa ; Wisconsin ; Eureka dis- 

 trict, Ner^'ada ; Utah ; Mackenzie and Hay rivers, and Lake Manitoba, Canada. 



Obs. Some authors are disposed to regard as synonyms of this species, besides 

 the above, P. pyxidata, P. shumardana, and P. concentrica, and all of these 

 forms are thought to be identical with P. subaculeata Murchison. For the 

 present it is preferable to retain the name P. spinulicosta for these American 

 Devonian forms. P. pyxidata, P. shumardana, and P. concentrica are here 

 arranged as species, but will probably be shown to be synonymous with 

 P. spinulicosta. 



Productella striatula Hall. Chemung (Dev.). 



Productella sfcriatula Hall, Pal. New York, IV, 1867, p. 177, pi. 25, figs. 14-21;— 

 Second Ann. Rep. N. Y, State Geol., 1883, pi. 48, figs. 27, 38.— Hall and 

 Clarke, Pal. New York, VIII, Pt. I, 1892, pi. 17, figs. 27, 38, 44. 



Loc. New Albion, Conewango, and Cold Spring, New York. 



Productella subaculeata of American authors = Productella spi jsta. 



Productella subaculeata cataracta Hall and Whitfield = Proauctella 

 spinulicosta. 



Productella subalata Hall. Middle Devonian. 



Productus subalatus Hall, Tenth Rep. N. Y. State Cab. Nat. Hist., 1857, p. 174; — 

 Geol. Survey Iowa, I, Pt. II, 1858, p. 500, pi. 3, fig. 10. 



Productus callawayensis Swallow, Trans. St. Louis Acad. Sci., I, 1860, p. 640. 



Productella subalata Hall, Pal. New York, IV, 1867, p. 165, pi. 23, fig. 49 ;— Sec- 

 ond Ann. Rep. N. Y. State Geol., 1883, pi. 48, fig. 16.— Hall and Clarke, Pal. 

 New York, VIII, Pt. I, 1892, pi. 17, fig. 16.— Keyes, Geol. Survey Missouri, 



V, 1895, p. 52. 



Loc, Rock Island, Illinois ; Callaway County, Missouri; Spring Valley, Minnesota, 



