452 BULLETIN f).'}, UNITED STATES NATIONAL MUSEUM. 



15456. Ogygia producta Hall and Whitfield. Cotypes. 



Middle Cambrian. East Canyon, Oquirrh Mountains, Utah. 



Hall and Whitfield, Rept. U. vS. Geol. Kxpl. 40th Par., IV, Pt. II, 

 1877, p. 244, pi. 2, figs. 31-34. 



See Bathyiiriscus productus. 



15451. Ogygia ? spinosa Walcott. Holot^-pe. 



Middle Cambrian. Secret Canyon, Eureka District, 

 Nevada. 

 Walcott, Mon. VIII, U. vS. Geol. vSurv., 1884, p. 63, pi. 9, fig. 22. 



= Zacanthoides .spinosus. 

 See Olenoides spinosus. 



30205. Olcostephanus lindgreni Hyatt. Holotype. 



Jurassic. Near Colfax, Placer County, California. 

 Hyatt, Bull. Geol. Soc. Amer., V, 1894, p. 427. 



23089. Olcostephanus (Simbirskites ) mutabilis vStanton. Cotypes. 



Knoxville (Eower Cret. j. Eive miles north of Paskenta, 

 California. 



Stanton, Bull. No. 133, U. vS. Geol. vSurv., 1895 (Feb., 1896), 

 p. 77, pi. 15, figs. 1-5. 



23090. Olcostephanus (Polyptychites) trichotomus vStanton. 



Holotype. 

 Knoxville (lyower Cret. ). Two miles south of Lowerys, 

 Tehama County, California. 



Stanton, Bull. No. 133, U. S. Geol. Surv., 1S95 (Feb., 1896), 

 p. 78, pi. 16, fig. I. 



33669. Oldhamia (Murchisonites) occidens Walcott. Cotypes. 



Upper Cambrian or Ordovician. Nassau Township, Rens- 

 selaer Count}', New York. 



Walcott, Proc. U. S. Nat. Mus., XVI, 1894, p. 314, ^K- i- 



15413. Olenellus asaphoides (Emmons). Plesiotype. 



Lower Caml)rian. Troy, New York. 



Walcott, Bull. No. 3.), U. S. Geol. Surv., 1 886, p. 168, pi. 17, figs. 

 3, 5, 6, 10; pi. 25, fig. 8. 



See Olenellus (Mesonacis) asaphoides. 



15413. Olenellus (Mesonacis) asaphoides (lunmons). IMesiotype. 

 18350. Eower Caml)rian. Greenwich and Troy, New York. 



Walcott, Proc. U. S. Nat. Mus., XII, 1889, p. 41; Teutli Ann. 

 Rept. IT. S. Geol. Surv., 1890, p. 637, pi. 88, figs, i, la, le, ig; 

 pi. 89, figs. I, la; pi. 90, figs. I, la. 



See Olenellus a.saplioides. 



18331. Olenellus ( Holmia ) broggeri (Walcott). Cotypes. 



Lower Cambrian. Conception Bay, Newfoundland. 



Walcott, Tenth .\nn. Rej)!. IT. S. (tCoI. Surv., 1890, ]>. 638, j)!. 

 91; fig. i; pl. 92, figs. i-ih. 



See Olenellus (Mesonacis) broggeri. 



