TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 697 



313. Volsella meekii (Evans and Shumard). Plesiotypes. 



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

 Dakota. 



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 72, pi. 15, 

 figs. 3a-c. 



= Modiola meekii. 



7781. Volsella (Brachydontes) multilinigera ("Meek.) Cotypes. 

 Colorado (Cret.). Coalville, Utah. 



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

 p. 18, pi. 11, fig. 3. 



= Modiola multilinigera. 



8175. Volsella (Modiolina) platynota White. Cotype. 



Jurassic? Head of Lincoln Valley, southeastern Idaho. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1SS3, 

 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, 1S83, 

 p. 58, pi. 25, fig. 3a; Third Ann. Rept. U. S. Geol. Surv., 

 1883, p. 423, pi. 13, fig. 1. 



= Modiola regularis. 



12545. Volsella scalprum isonema Meek. Holotype. 



Jurassic. Weber Canyon, Wasatch Range, Utah. 



Meek, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. I, 1S77, p. 132, 

 pi. 12, figs. 4, 4a. 



= Modiola scalprum isonema. 



7818. Volsella subimbricata Meek. Cotypes and plesiotype. 



8178. Jurassic. Lower Canyon of Yellowstone, Montana, and 



near Vermilion Canyon, northwestern 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. Hok^pe. 



Eocene. Near Wheelock, Texas. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. I, 1S90, p. S4, 

 pi. 6, fig. 1. 



9897. Volutilithes sayana (Conrad). Plesiotype. 



Tertiary. Western Texas. 



Conrad, Rept. U. S. Mexican Bound. Surv., Emory, I, Pt. II, 1S57, 

 p. 162, pi. 19, fig. 6. 



112198. Volutilithes spinosa (Lamarck). Plesiotype. 



. Eocene. Shell Bluff, Georgia. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. I, 1S90, p. 74, 

 pi. 6, fig. 3. 



