590 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



45988. Scenella compressa Ulrich and Scofield. Holotype. 



Stones River (Ord. ). Minneapolis, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 840, pi. 61, figs. 38-41. 



15367. Scenella? conula Walcott. Cotype. 



Lower Cambrian. Prospect Mountain, Eureka District, 

 Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 15, pi. 9, fig. 6; 

 Bull. No. 30, U. S. Geol. Surv., 1886, p. 127, pi. 8, figs. 6,6a; 

 Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 616, pi. 73, 

 figs. 4, 4a. 



45989. Scenella magnifica Ulrich and Sconeld. Plastotype. 



Stones River (Ord.). Cannon Falls, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 839, pi. 82, figs. 7-9. 



45990. Scenella radialis Ulrich and Scofield. Plastotype. 



Trenton (Ord.). St. Paul, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 841, pi. 61, figs. 31, 32. 



15368. Scenella reticulata Billings. Plesiotype. 

 18323. Lower Cambrian. Topsail Head, Conception Bay, New- 

 foundland. 



Walcott, Bull. No. 30, U. S. Geol. Surv., 1886, p. 125, pi. 12, figs. 

 6, 6a; Tenth Ann. Rept. U. S. Geol. Surv., 1S90, p. 616, pi. 73, 

 figs. 9-gd. 



15369. Scenella retusa Ford. Plesiotype. 



Lower Cambrian. Troy, New York. 



Walcott, Bull. No. 30, U. S. Geol. Surv., 1886, p. 126, pi. 12, fig. 

 3a; Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 617, pi. 73 

 fig. 6a. 



45991. Scenella superba Billings. Plesiotype. 



Stones River (Ord.). Cannon Falls, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1S97, p. 838, pi. 61, fig. 35. 



15370. Scenella ? varians Walcott. Cotypes. 



Lower Cambrian. Two miles east of Highgate Springs, 

 Vermont. 



Walcott, Bull. No. 30, U. S. Geol. Surv., 1886, p. 127, pi. 12, figs. 

 2, 2a; Tenth Ann. Rept. U. S. Geol. Surv., 1890, p. 617, pi. 73, 

 figs. 5- 5a. 



43289. Scenellopora radiata Ulrich. Holotype. 



Trenton? (Ord.). Knoxville, Tennessee. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., V, 1882, p. 158, pi. 6, 

 figs. 6, 6a, 6b. 



43478. Sceptropora facula Ulrich. Cotypes and figured sections. 



Richmond (Ord.). Stony Mountain, Manitoba. 

 Ulrich, Amer. Geol., I, 1888, p. 229, fig. 1. 



