600 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



3553. Sigaretus scopulosus Conrad. Cotypes. 



Miocene. Astoria, Oregon. 



Conrad, Wilkes U. S. Expl. Exped., X, 1849,- p. 727, Atlas, pi. 19, 

 figs. 6, a. 



22914. Sigaretus (Euaticina ? ) textilis Stanton. Cotypes. 



Colorado (Cret.). Upper Kanab Valley, Utah. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. 139, pi. 30, 

 figs. 5, 6. 



22894. Siliqua huerfanensis Stanton. Cotype. 



Colorado (Cret.). Huerfano Park, Colorado. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. 114, pi. 25, figs. 

 10, 11. 



1568S7. Siliqua (patula var.?) oregonia Dall. Holotype. 



Miocene. Two Mile Creek, near Coos Bay, Oregon. 



Dall, Trans. Wagner Free Inst. Sci. Phila. , III, Pt. V, 1900, p. 957. 



157839. Siphonalia ? lineata Stanton. Cotypes. 



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

 one mile southeast of Lower Lake, California. 



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

 p. 1047, pi. 67, fig. 7. 



4791. Siphonaria penjinae Dall. Cotypes. 



Miocene. Penjinsk Gulf, Siberia. 



Dall, Proc. U. S. Nat. Mus., XVI, 1893, p. 475, pi. 56, fig. 2. 



4754. Siphonotreta ? curta Dana. Holotype. 



Carboniferous. Gleudon on the Hunter, New South 

 Wales, Australia. 



Dana, Wilkes U. S. Expl. Exped., X, 1849, p. 685, Atlas, pi. 2, 



figs. 5, 5a, 5b. 

 [A pelecypod.] 



115421. Sismondia anguillae Cotteau. Holotype. 



Miocene. Anguilla, West Indies. 



Cotteau, Kongl. Svenska Vet.-Akad. Hand., XIII, 6, 1874, p. 18, 

 pi. 3, figs. 5-8. 



1 15394. Sismondia antillarum Cotteau. Cotypes. 



Eocene. St. Bartholomew, West Indies. 



Cotteau, Kongl. Svenska Vet.-Akad. Hand., XIII, 6, 1874, p. 17, 

 pi. 3, figs. 1-4. 



25524. Sitona paginarum Scudder. Cotypes. 



Older Tertiary. Roan Mountains, western Colorado. 



Scudder, Mon. XXI, U. S. Geol. Surv., 1S93, p. 68, pi. 10, fig. 1. 



13827. Skenidium devonicum Walcott. Holotype. 



Middle Devonian. Lone Mountain, near Eureka, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 18S4, p. 116, pi. 13, figs. 

 4, 4a. 



= Dalmanella devonica. 



