TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 237 



43388. Drymotrypa dichotoma Ulrich. Holotype. 



Trenton (Ord.). Montreal, Canada. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 399, pi. 53, fig. 6. 



43389. Drymotrypa diffusa (Hall). Plesiotype and figured sections. 



Rochester (Sil. ). Lockport, New York. 



Ulrich, Geol. Surv. 111., VIII, 1890, pi. 53, figs. 7-70. 



27738. Duncanella rudis Girty. Plesiotypes. 



Helderbergian (Dev. ). Big Sandy River, Benton County, 

 Tennessee. 



Girt}-, Nineteenth Ann. Rept. U. S. Geol. Surv., 1900, p. 553. 



45796. Dyeria costata (James). Plesiotypes. 



Lorraine (Ord.). Cincinnati, Ohio. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 1044, fig. 8. 



13898. Dystactella insularis Walcott. Holotype. 



Middle Devonian. Grays Canyon, Eureka District, Nevada. 

 Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 172, pi. 15, fig. 8. 

 = Nuculites insularis. 



46553. Dystactospongia minima Ulrich. Holotype. 



Richmond (Ord.). Near Hanover, Butler County, Ohio. 

 Ulrich, Amer. Geol., Ill, 1889, p. 243. 



46554. Dystactospongia minor Ulrich and Everett. Figured sec- 



tions of holotype. 

 Stones River (Ord.). Dixon, Illinois. 



Ulrich and Everett, Geol. Surv. 111., VIII, 1890, p. 278, pi. 8, 

 figs. 3a, 3b. 



35404. Dystactospongia minor Ulrich and Everett. Plesiotypes. 



Stones River (Ord.). Two miles southwest of Columbia, 

 Tennessee. 



Hayes and Ulrich, U. S. Geol. Surv., Folio 95, 1903, illustration 

 sheet, figs. 48, 49. 



46555- Dystactospongia rudis Ulrich and Everett. Figured sections 



of holotype. 

 Stones River (Ord.). Dixon, Illinois. 



Ulrich and Everett, Geol. Surv. 111., VIII, 1890, p. 279, pi. S, 

 fig. 4a. 



Ecculiomphalus devonicus Walcott. See Eccyliomphalus 

 devonicus. 



45797. Eccyliomphalus contiguus Ulrich. Cotypes. 



Stones River (Ord.). Murfreesboro, Tennessee. 



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

 1897, p. 1037,. pi. 74, figs. 48-52. 



