714 BULLETIN 02, UNITED STATES NATIONAL MUSEUM. 



Leptobolus insignis Hall. 



Leptobolus insignis Hall, Descrip. n. sp. Foss. from Hudson River Group, 1871, 

 p. 3, pi. 3, fig. 17; 24th Rep. New York State Cab. Nat. Hist., 1872, p. 227, 

 pi. 7, fig. 17. Nicholson, Pal. Province Ontario, 1875, p. 85. Ami, Canadian 

 Rec. ScL, 3, p. 103 (loc. occ.). Hall and Clarke, Pal. New York, 8, pt. 1, 

 1892, p. 74, pi. 3, figs. 1-6. Grabau and Shinier, N. A. Index Fossils, 1, 1907, 

 p. 194. 



Utica: Middleville, Utica, etc., New York; Ottawa, Ontario; Cincinnati, Ohio 

 (Fulton); Macasty Bay, Anticosti (Macasty). 



Leptobolus lepis Hall. 



Leptobolus lepis Hall, Description n. ep. Foss. from Hudson River Group, 1871, 

 p. 3, pi. 3, figs. 19, 20; 24th Rep. New York State Cab. Nat. Hist., 1872, p. 



226, pi. 7, figs. 19, 20. Hall and Whitfield, Pal. Ohio, 2, 1875, p. 69, pi. 1, 

 figs. 10, 11. Miller, Cincinnati Quart. Jour. Sci., 2, 1875, p. 11. Hall and 

 Clarke, Pal. New York, 8, pt. 1, 1892, p. 74, pi. 3, figs. 8-10. Cumings, 32d 

 Ann. Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 911, pi. 34, figs. 6, 6a. 



Trenton (Upper): Cincinnati, Ohio*, and vicinity. 



Leptobolus lepis eliftonensis Foerste. 



Leptobolus lepis cliftonensis Foerste, Bull. Sci. Lab. Denison Univ., 16, 1910, 



p. 21, pi. 2, figs. 20a-c. 

 Trenton (Hermitage): Clifton, Tennessee. 



Leptobolus occidentalis Hall. 



Leptobolus occidentalis Hall, Description n. sp. Foss. from Hudson River Group, 

 1871, p. 3, pi. 3, fig. 18; 24th Rep. New York State Cab. Nat. Hist., 1872, p. 



227, pi. 7, fig. 18. Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pi. 3, fig. 7. 

 Grabau and Shimer, N. A. Index Fossils, 1, 1907, p. 194. 



Richmond: Hawleys Mills, Iowa; Platteville, Wisconsin (Maquoketa); Arkansas 

 and Oklahoma (Sylvan). 



teptobolus walcotti Ruedemann. 



Leptobolus walcotti Ruedemann, Bull. New York State Mus., 42, 1901, p. 569, 



pi. 1, figs. 6-12. 

 Chazyan (Normanskill)* Mount Moreno, near Hudson, New York; Arkansas; 



Tennessee. 



LEPTOCCELIA Hall. See Ccelospira Hall. 



LEPTOCCELIA DISPARILIS Hall. See Atrypina disparilis. 



LEPTOC(ELIA INTERMEDIA Hall. See Atrypina intermedia. 



LEPTODESMA Hall. Genotype: L. potens Hall. 



Leptodesma Hall, Pal., New York, 5, pt. 1, Lam. (adv. copy), 1883, p. 4; ibid., 1, 

 1884, pp. 13, 175; 35th Rep. New York State Mus. Nat. Hist., 1884, pp. 347, 

 406c. Miller, N. A. Geol. Pal., 1889, p. 484. Jackson, Amer. Nat., 24, 1890, 

 p. 1141; Mem. Boston Soc. Nat. Hist., 4, 1890, p. 381. Clarke, Amer. Geol., 13, 

 1894, pp. 286-289, figs. Hind, Mon. British Carb. Lam., 2, Pal. Soc., 1901, 

 p. 10. 



Leptodesma rhomboidea (Hall). 



Avicula rhomboid ea Hall, Pal. New York, 2, 1852, p. 84, pi. 27, figs. 2a, b, c, d. 

 Leptodesma rhomboideum Whitfield and Hovey, Bull. Amer. Mus, Nat. Hist., 



11, 1899, pi. 2, p. 158 (gen. ref.)- 

 Clinton: New Hartford and Sodus, New York; Arisaig, Nova Scotia. 



