TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 0)97 



313. Volsella meekii (Pvvans and vShumard). Plesiotypes. 



Fort Pierre or Fox Hills (Cret.). Moreau River, South 

 Dakota. 



Meek, Rept. l^ S. (ieol. Surv. Tt-rr., IX, 1S76, j). 72, ])1. 15, 

 figs. 3a-c. 



= Modiola meekii. 



77S1. Volsella (Brachydontes ) multilinigera TMeek.) Cotypes. 

 Colorado (Cret.j. Coalville, Utah. 



White, Twelfth Ann. Rept. V. S. Geol. Surv. Tc-rr., Pt. I, 1S.S3, 

 p. 18, pi. IT, fig. 3. 



= Modiola nuiltiliniijera. 



CS175. Volsella (Modiolina) platynota White. Cotype. 



Jura.ssic? Head of L,incolii X'alley, southeastern Idaho. 



White, Twelfth Ann. Rept. V. S. (ieol. .Surv. Terr., I't. I, 1.SS3, 

 p. 146, pi. 37, figs. 3a, 3b. 



= Modiola platynota. 



9044. Volsella (Brachydontes) regularis White. Holotype. 



Laramie (Cret. ). Crow Creek, northern Colorado. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1S.S3, 

 p. 58, pi. 25, fig. 3a; Third Ann. Rept. U. vS. (rcol. Surv., 

 1883, p. 423, pi. 13, fig. I. 



= Modiola regularis. 



12545. Volsella scalprum isonema Meek. Holotype. 



Jura.ssic. Weber Canyon, Wa.satch Range, Utah. 



Meek, Rept. U. vS. Geol. p;xpl. 40th Par., IV, Pt. I, 1S77, j). 132, 

 pi. 12, figs. 4, 4a. 



= Modiola scalprum i.sonema. 



7818. Volsella subimbricata Meek. Cotypes and plesiotype. 



8178. Juras.sic. Lower Canyon of Yellow.stone, Montana, and 



near Vermilion Canyon, northwe.steru Colorado. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1883, 

 p. 145, pi. 37, figs. 2a-c. 



= Modiola subimbricata. 



1 1 1865. Volutilithes precursor Dall. Holotype. 



Eocene. Near Wheelock, Texas. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. I, 1S90, ]>. 84, 

 pi. 6, fig. I. 



9897. Volutilithes sayana (Conrad). Plesiotype. 



Tertiary. Western Texas. 



Conrad, Rept. U. S. Mexican Round. Surv., Ivniory, I, Pt. II, 1S57, 

 ]). 162, pi. 19, fig. 6. 



112198. Volutilithes spinosa (Lamarck). Plesiotype. 



Kocene. Shell Bluflf, Georgia. 



Dall, Trans. Wagner Free Inst. Sci. Pliil.i., Ill, Pt. I, 1890, p. 74, 

 pi. 6, fig. 3. 



