DESCRIPTIONS OF SPECIES. 369 



1873. Productvs punctatus. Meek and Worthen, Geol. Surv. Illinois, Rept., vol. 5, p. 569, pi. 25, fig. 13. 

 Upper and Lower Coal Measures: Illinois. 



1875. Productus punctatus. White, U. S. Geog. Geol. Surv. W. 100th Mer., Rept., vol. 4, p. 114, pi. 7, 



figs. 2a-c. (Entire volume published in 1877.) 

 Carboniferous: At and near top of Grass Mountain, Ely Range, 35 miles north of Pioche, Nev. 



1876. Productu» jninclatus. White, Powell's Rept. Geol. Uinta Mountains, p. 89. 

 Lower Aubrey Group: Confluence of Grand and Green rivers, Utah. 



1878. ProductuH sp. allied to P. puncialus. Etheridge, Geol. Soc. London, Quart. Jour., vol. 34, p. 630. 

 Carboniferous: Feilden Isthmus, latitude 82° 43'. 



1882. Productus punctatus. White, Geol. Surv. Indiana, 11th Rept., p. 373, pi. 42, figs. 1-3. 

 Coal Measures: Newport, Ind. 



1883. ProducUm punctatus. Hall, Rept. New York State Geol. for 1882, pi. (19) 50, figs. 14-16. 



1883. Productus rogersi. Hall, Rept. New York State Geol. for 1882, pi. (19) 50, figs. 17, 18. 

 Coal Measures. 



1884. Productus punctatus. W'hite, Geol. Surv. Indiana, 13th Rept., p. 124, pi. 27, figs. 1-3. 



Coal Measures: Vermilion, Vigo, Sullivan, Vanderberg, Dubois, Warrick, and Pike counties, Ind. 

 1887. Productus punctatus. Herrick, Sci. Lab. Denison Univ., Bull., vol. 2, p. 48, pi. 2, fig. 29. 



Coal Measures: Flint Ridge, Ohio. 

 1892. Productus punctatus. Hall and Clarke, Int. Study of Brach., pt. 1, pi. 22, figs. 9, 10. 



Coal Measures: Mississippi Valley. 

 1892. Productus punctatus. Hall and Clarke, Pal. New York, vol. 8, pt. 1, pi. 17A, fig. 21; pi. 19, figs. 

 14-18. 



Upper Coal Measures: Near Kansas City, Mo.; Missouri. 



1895. Productus punctatus. Keyes, Missouri Geol. Surv., vol. 5, p. 51. pi. 37, flgs. la-c. (Date of 



imprint, 1894.) 

 Upper Coal Measures: Kansas City, Mo. 



1896. Productus punctatus. Smith, Am. Phil. Soc, Proc, vol. 35, p. 239, pi. 22, fig. 7. 

 Lower Coal Measures: Conway Count)', Ark. 



Lower Carboniferous: Several localities in Arkansas. 

 1900. Productus punctatus. Beede, Univ. Geol. Surv. Kansas, Rept., vol. 6, p. 87, pi. 10, figs. 3-3c; 

 pi. 11, fig. 3. 

 Upper Coal Measures: Kansas City, Turner, Lawrence, Lecompton, Topeka, Moline. 

 1896. Productus punctatus. Smith, Leland Stanford .Junior Univ. Publ.; Cont. Biol. Hopkins Seaside 

 Lab., No. 9, p. 29, pi. 22, fig. 7. 

 Lower Coal Measures: Conway County, Ark. 

 Lower Carboniferous: Several localities in Arkansas. 



The collections examined indicate that this is a rather rp.re fossil in the Colorado 

 Carboniferous. The identification at station 2221 in the San Juan region is doubtful 

 on account of the poor chai'acter of the material, a single very small, exfoliated 

 specimen. 



Locality and liorizon. — San Juan region (stations 2204, 2241, 2334, 2335); middle 

 and upper portion of the Hermosa formation. 

 14364— No. 16—03 24 



