630 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



4331 1. Streblotrypa nicklesi Ulrich. Cotypes and figured sections. 

 Chester (Miss.)- Kaskaskia, Illinois. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 667, pi. 71, figs. 9-9C. 



43481. Streblotrypa striata Ulrich. Holotype; 



Upper Waverly (Miss.). Richfield, Ohio. 



Ulrich, Bull. Denison Univ., IV, 1888, p. 87, pi. 14, figs. 12, 12a. 



157842. Strepsidura pachecoensis Stanton. Holotype. 



Lower Tejon (Eocene). One mile north of Pacheco, 

 California. 



Stanton, Seventeenth Ann. Rept. U. S. Geol. Surv., Pt. I, 1897, 

 p. 1045, pi. 67, fig. 2. 



33322. Streptacis whitfieldi Meek. Holotype. 



Upper Carboniferous. Danville, Illinois. 



Meek, Proc. Acad. Nat. Sci. Phila., 1871, p. 173. — Meek and Wor- 

 then Geol. Surv. 111., V, 1873, p. 596, pi. 29, fig. 1. 



42538. Streptelasma breve Ulrich. Cotypes. 



Stones River (Ord.). Big Spring, near Fountain, Minne- 

 sota. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. I, 

 1893, p. 92, figs. 7a-d. 



42557. Streptelasma parasiticum Ulrich. Holotype. 



Black River (Ord.). Minneapolis, Minnesota. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept, III, Pt. I, 

 1893, p. 89, fig. 6. 



27737. Streptelasma waynense (Safford). Plesiotypes. 



341 14. Helderbergian (Lower Dev. ). Big Sandy River, Benton 



County, Tennessee, and Atoka quadrangle, Indian 

 Territory. 

 Girty, Nineteenth Ann. Rept. U. S. Geol. Surv., 1900, p. 555. 



13791. Streptorhynchus chemungensis (Conrad). Plesiotype. 



Middle and Upper Devonian. Eureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 117, pi. 13, figs. 

 7, 16. 



=Schuchertella chemungensis. 

 See Orthothetes chemungensis. 



14313. Streptorhynchus crenistria (Phillips). Plesiotype. 



Lower Carboniferous. Eureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 279, pi. 18, fig. 14. 

 = Orthotetes keokuk. 



1422 1. Streptorhynchus equivalvis and inequalis Hall and Whit- 

 field. Plesiotypes. 

 Waverly (Miss.). Ogden and Logan Canyon, Utah. 



Hall and Whitfield, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. II, 

 1877, p. 252 (as equivalvis), pi. 4, figs. 1, 2 (as inequalis). 



=Schuchertella inequalis. 

 See Orthothetes inaequalis. 



