I 



TYPE SPKCIMKNS OF INVERTEHRATK FO^^SILS. (>57 



337. Thetis ? circularis ( Meek and llaydcii). Holotype and 



340. ])araty])es. 



Fort Pierre ( Cret. ). Near Black Hills on Cheyenne River, 



Sonlli Dakota, and near mouth of Milk River, 



Montana. 



Mc(.'k, Rept. U. vS. C.c-ol. Surv. Tt-rr., IX, 1876, ]). lyo, pi. 17, 

 fij^s. Sa-c. 



12330. Thetis circularis CMeek and Hayden). Plesiotypes. 



Fort Pierre (Cret.j. Black Hills, vSoutli Dakota. 



Whitful.l. Kept. Geol. and Re.sonrccs Klack Ilill.s Dakota, 1880, 

 p. 417, J)!. II, fig.s. 22-24. 



See W'nus ? circularis. 



211. Thracia ? arcuata Meek and Ilayden. Holotype. 



Jurassic. Southwest ba.se of Black Hills, South Dakota. 



Meek and Hayden, Proc. Acad. Nat. vSci. Phila. for 1860, p. 182; 

 Pal. Upper Mo., Smith.sonian Conl. to Know!., No. 172, XIV, 

 1S64, ]). 102, pi. 4, fig. 8. 



107399. Thracia dilleri Dall. Holotype. 



Eocene. Coos Bay, Oregon. 



Dall, Trans. Wagner Free Inst. vSci. Phila., Ill, Pt. IV, 1898, 

 p. 929, pi. 34, fig. 19; Pt. VI, 190.1^, p. 1524. 



188. Thracia gracilis (Meek and Hayden). Holotype. 



Fox Hills (Cret.). Mouth of Judith River, Montana. 

 Meek, Rept. U. vS. Oeol. vSurv. Terr., IX, 1876, p. 224, pi. 39, fig. 6b. 

 See Tellina <.;Tacillis. 



28962. Thracia ? montanaensis (Meek). Holotype. 



Jurassic. Dexdl's slide. Cinnabar Mountain, Yellow.stone 

 River, Montana. 



Stanton, Mon. XXXII, Part II, U. vS. Geol. vSnrv., 1899, p. 628, 

 pi. 73, fig. 10. 



[Probably holotvpe of Coriinva montanaensis INIeek. T. W. 

 vStanton.] 



8029. Thracia myaeformis White. Holotype. 



Cretaceous. Bell County, Texas. 



White, Proc. V. vS. Nat. Mus., II, 1879,]). 297, pi. 6, figs. 1,2; 

 Twelfth Ann. Rept. U. vS. Geol. Snrv. Terr., 1883, ]). 23, ]i\. 17, 

 figs. 2a, b. 



189. Thracia ? prouti (Meek and Hayden). Holotype. 



Fox Hills (Cret.). Mouth of Judith River, Montana. 



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 225, pi. 37, figs. 

 6a, 6b. 



See Tellina prouti. 



12253. Thracia subgraciUs Whitfield. Holotype. 



Fort Pierre (Cret.). Cheyenne River, near French Creek, 

 Black Hills, South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 419, pi. II, figs. 29, 30. 



23232— <.)5 42 



