BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 479 



ENCRINURUS PUNCTATUS Foerste. See Encrinurus thresher! and E. ornatua. 



Encrinurus raricostatus Walcott. 



Encrinurus excedrinus Safford, Geol. Tennessee, 1869, p. 290 (nom. mid.). 

 Encrinurus raricostatus Walcott, 31st Rep. New York State Mus. Nat. Hist., 1880 



(adv. sheets, 1877), p. 69. Safford and Vogdes, Proc. Acad. Nat. Sci. 



Philadelphia, 1889, p. 167, text fig. Clarke, Geol. Minnesota, 3, pt. 2, 1890, 



p. 740. Whi teaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 2, 1895, p. 128. 

 Cryptonymus raricostatus Vogdes, Mon. Genera Zethus, etc., 1878, p. 27. 

 Black River: Mineral Point, Beloit, and janesville, Wisconsin (Platteville); 



Manitoba. 



Encrinurus rarus (Walcott). 



Ceraurus rarus Walcott, 31st Rep. New York State Mus. Nat. Hist., 1880 (adv. 



sheets, 1877), p. 68. 



Ceraurus (Cyrtometopus) rarus Clarke, Geol. Minnesota, 3, pt. 2, 1894, p. 738. 

 Encrinurus rarus Raymond and Barton, Bull. Mus. Comp. Zool., 54, 1913, p. 541, 



pi. 2, fig. 3. 



Black River (Platteville) : Beloit, Wisconsin. 

 Observation. See E. vannulus Clarke. 



Encrinurus thresher! Foerste. 



Encrinurus thresheri Foerste, Bull. Sci. Lab. Denison Univ., 2, 1887, p. 101, 



pi. 8, fig. 26. 



Encrinurus punctatus Foerste, Geol. Surv. Ohio, 7, 1893, p. 531, pi. 27, fig. 26. 

 Upper Medinan (Brassfield): Dayton, Ohio; Hanover, Indiana. 



Encrinurus trentonensis Walcott. 



Encrinurus trentonensis Walcott, 31st Rep. New York State Mus. Nat. Hist., 1880 



(adv. sheets, 1877), p. 68. Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 



202, pi. 15, figs. 26, 27. Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 



314. 



Cryptonymus trentonensis Vogdes, Mon. Genera Zethus, etc., 1878, p. 28. 

 Black River: Clifton, Wisconsin; Dunleith, Illinois. 

 Trenton: Jacksonburg, New Jersey. 



Encrinurus tuberculifrons Weller. 



Encrinurus tuberculifrons Weller, Bull. Chicago Acad. Sci., Nat. Hist. Surv., 4, 



pt. 2, 1907, p. 259, pi. 24, figs. 12-13. 

 Niagaran (Racine): Near Joliet, Illinois. 



Encrinurus tuberculosus Collie. 



Encrinurus tuberculosis Collie, Bull. Geol. Soc. Amer., 14, 1903, p. 418, pi. 59, fig. 3. 

 Trenton: Belief onte, Pennsylvania. 



Encrinurus vannulus Clarke. 



Encrinurus vannulus Clarke, Geol. Minnesota, 3, pt. 2, 1894, p. 739, figs. 56, 57. 

 Black River (Platteville): Janesville and Beloit, Wisconsin. 

 Cotypc.Cat. No. 41954, U.S.N.M. 

 Observation. Probably the same as E. rarus Walcott. 



Encrinurus Ylgilans (Hall). 



Ceraurus vigilans Hall, Pal. New York, 1, 1847, p. 245, pi. 65, figs. 2a-h. Emmons, 



Amer. Geology, 1, pt. 2, 1855, p. 217, pi. 15, figs. 2a-c. 

 Cryptonymus vigilans Vogdes, Mon. Genera Zethus, etc., 1878, p. 29, pi. 2, figs. 



2a-2h. 



