TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 553 



13874. Pterinea newarkensis Walcott. Cotypes. 



Upper Devonian. Newark Mountain, Eureka District, 



Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 165, pi. 5, fig. 12. 



14363. Pterinea pintoensis Walcott. Cotypes. 



Dower Carboniferous. Near Pinto Peak, Eureka District, 

 Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 234, pi. 19, fig. 10. 



46295. Pterinea prolifica Billings. Plastotype. 



Hudson River (Ord.). Anticosti Island, Gulf of St. 

 Lawrence. 

 Billings, Cat. Sil. Foss. Anticosti, 1866, p. 16. 



1436 1. Pterinopecten hoosacensis Walcott. Cotypes. 



Dower Carboniferous. Eureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 232, pi. 8, fig. 9. 



14362. Pterinopecten spio Walcott. Cotype. 



Lower Carboniferous. Eureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 233, pi. 8, figs. 1, ia. 



130349. Pteropurpura postii Dall. Holotype. 



Oligocene. Ballast Point, Tampa, Florida. 

 Dall, Proc. U. S. Nat. Mus., XVIII, 1895, p. 44. 



163801. Pterorhytis (conradiana var.?) fluviana Dall. Holotype. 

 Pliocene. Shell Creek, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. VI, 1903, pi. 

 60, figs. 20, 21. 



41955. Pterygometopus intermedius (Walcott). Plesiotype. 



Black River (Ord.). Chatfield, Minnesota. 



Clarke, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. 



II, 1894, p. 728, fig. 45. 



27946. Pterygotus buffaloensis Grote. Plesiotype. 



Bertie (Sil.). Buffalo, New York. 



Clarke, Text-Book of Pal., Zittel and Eastman, I, Part II, 1900, 

 p. 678, fig. 1425. 



[This is the reverse side of the toothed antennal chela figured by 

 Clarke.] 



43728. Ptilodictya briareus Ulrich. Holotype and figured sections. 

 Stones River (Ord.). Lebanon, Tennessee. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., V, 1882, p. 165, pi. 7, 

 figs. 6, 6a, 6b. 



= Escharopora briareus. 



43419. Ptilodictya expansa Hall. Figured sections of plesiotype. 



Clinton (Sil.). Dayton, Ohio. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 391, fig. lie. 



