TYPE SPECIMENS OB^ INVERTEBRATE FOSSILS. 063 



1 15458. Triforis guttata Onppy. Holotype. 



Pliocc-iic. Maura, Trinidad, I^ritish West Indies. 



(luppv, ("reol. IMag., London, Dc-c. II, I, 1.S74, ]>. 408, pi. iS, fig. 27. 



1 13315. Triforis mitella Dall. Holotype. 



()lii;()cene. Chipola River, Callioun Count>', l-'lorida. 



Dall, Trans. Wagner I-'rtv Inst. Sci. Phila., Ill, Pt. II, 1S92, 

 p. 265, ])1. 21, fig. 10. 



8645. Trigonarca depressa ( White ). Holotype. 



Colorado (Cret.). Six miles below Casa Salazan, New 

 Mexico. 

 Stanton, lUill. No. 106, U. S. Geol. Surv., 1S93, p. 93, })1. 19, fig. 2. 

 See Idonearca depre.s.sa. 



348. Trigonarca ( Breviarca) exigua ( Meek and Hayden). Holo- 



349. tj'pe and paratype. 

 Fort Pierre (Cret.). Mouth of Milk River, Montana, and 



near forks of Cheyenne River, Sotith Dakota. 



Meek, Rept. I'. vS. Geol. vSurv. Terr., IX, 1876, p. 93, pi. 15, figs. 

 2a-f. 



See Cucullcca exio^ua. 



22869. Trigonarca obliqua (Meek). Plesiotype. 



Colorado (Cret.). Huerfano Park, Colorado. 



vStanton, Bull. No. 106, U. S. Geol. .Surv., 1893, p. 92, j)!. 19, fig. 

 I ; pi. 20, fig.s. 2-6. 



7794. Trigonia americana Meek. Cotypes. 



7819. Jurassic. Near Lower Canyon of the Yellowstone River, 



Montana. 



While, Twelfth .\iin. Rept. V. S. Geol. Surv. Terr., Pi. I, 1883, 

 ]). 14.S, ])1. 38, figs. I a- lb. 



212. Trigonia conradi Meek and Hayden. Cotypes. 



Jura.ssic. Southwest base of Black Hills, vSouth Dakota. 



Meek and Hayden, Proe. Acad. Nat. Sci. Phila., for 1S60, p. 183; 

 Pal. I'pper Mo., vSniithsonian Cont. to Kuowl. No. 172, XIV, 

 1864, ]). 83, ])1. 3, fig. 1 1. 



28935. Trigonia elegantissima Meek. Plesiotyi)e. 



Jura.ssic. Devils vSlide, Ciiuiabar Mountain, Montana. 



vStanton, Mon. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 619, 

 pi. 73, fig. 2. 



9849. Trigonia emoryi Conrad. Holotype. 



Wa.shita (Lower Cret.). Between P'l Pa.so and Frontera, 

 Texas. 



Conrad, Rept. U. S. Mexican Bound. Surv., I\niory, I, Pt. II, 1857, 

 p. 148. pi. 3, figs. 2a-c. 



30230. Trigonia emoryi Conrad. Ple.siotypes. 



Buda (Lower Cret.). Near Au.stin, Texas. 



Shattuck, Bull. No. 205, V. S. Geol. Surv., 190^, p. 2^, i)l. 8, figs. 

 6-8. 



