BIBLIOGRAPHIC LIST OF GENEEA AND SPECIES. 817 



Modiolopsis modiolaris Hall and Whitfield. See Modiolodon obtusus. 



Modiolopsis modiolaris Meek and Worthen. See Whiteavesia modioliforniis. 



Modiolopsis mytiloides Hall. 



Modiolopsis mytiloides Hall, Pal., New York, 1, 1847, p. 157, pi. 35, figs. 4a-b.— 



Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 508, pi. 36, fig. 8— Grabau and 



Shinier, N. A. Index Fossils, 1, 1909, p. 511, fig. 68Gb. 

 Trenton: Middleville, New York; Goodhue and Fillmore Counties, Minnesota 



(Prosser); Oshkosh, Wisconsin; etc. 

 Plesiotype.— Cat. No. 46250, U.S.N .M. 



Modiolopsis nais Billings. 



Modiolopsis Nais Billings, Pal. Foss., 1, Geol. Surv. Canada, 1865, p. 45, fig. 47a, b 



(adv. sheets, 1862); Geol. Canada, Geol. Surv. Canada, p. 143, fig. 81a, b. 

 Black River (Leray) : Pauquettes Rapids, Ottawa River, Canada. 



Modiolopsis nana Ulrich. 



Modiolopsis nana Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 507, pi. 36, fig. 7. 

 Trenton (Prosser): Near Cannon Falls, Minnesota. 

 Holotype.— Gat. No. 46251, U.S.N.M. 



Modiolopsis nasutus Hall. See Orthodesma nasutum. 



Modiolopsis nilesi Whitfield. See Edmondia nilesi. 



Modiolopsis? nuculipormis Hall. See Ctenodonta nuculiformis. 



Modiolopsis oblonga James. Not recognized. 



Modiolopsis subspatulata James (not Hall, 1847), Paleontologist, No. 3, 1879, 



p. 23. 

 Modiolopsis oblonga James, ibid., No. 6, 1S82, p. 53. 

 Richmond: Clinton County, Ohio. 



Modiolopsis oblonga Ulrich. See Whiteavesia oblonga. 



Modiolopsis obsoleta Ulrich. 



Modiolopsis obsoleta Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 509, pi. 36, figs. 



11 and] 2. 

 Black River (Decorah): Near Cannon Falls, Minnesota. 

 Holotype— Cat. No. 46253, U.S.N.M. 



Modiolopsis obtusa (Hall). 



Modiola obtusa Hall, Pal. New York, 1, 1847, p. 40, pi. 10, fig. 1. 

 Modiolopsis obtusa Miller, N. A. Geol. Pal., 1889, p. 490 (gen. ref.). 

 Black River (Lowville): Watertown, New York. 



Modiolopsis occidens Walcott. 



Modiolopsis occidens Walcott, Mon. U. S. Geol. Surv., 8, 1894, p. 77, pi. 1, fig. 5; 



pi. 11, figs. 14, 14a. 

 Upper Pogonip: Fish Creek Mountains, and Lone Mountain, Nevada. 

 Cotypes — Cat. Nos. 17287, 17288, U.S.N.M. 



Modiolopsis orthonota (Conrad). 



Unio orthonotus Conrad, 3d Ann. Rep. New York State Geol. Surv., 1839, p. 66. 

 Cypricardia orthonota Hall, Geol. Rep. 4th Dist., New York, 1843, p. 48, figs. 



8, 9; tab. ill. 2, figs. 8, 9.— Owen, Amer. Jour. Sci. Arts, 48, 1845, p. 300, figs. 



8, 9.— Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 176, figs. 



