BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 713 



TRANSVERSALIS var. PROLONGATA Foerste. See Plectambonites transver- 

 salis prolongatus. 



LEPT^NA TRILOBATA Owen. See Strophomena trilobata. 



Leptaena unicostata (Meek and Worthen). 



Leptsena (n. sp.?) Owen, Geol. Surv. Wisconsin, Iowa, Minnesota, 1852, pi. 2B, 

 fig. 3. 



Strophomena unicostata Meek and Worthen, Geol. Surv. Illinois, 3, 1868, p. 335, 

 pi. 4, fig. 11. Whitfield, Geol. Wisconsin, 4, p. 262, pi. 12, fig. 14. 



Rafinesquina unicostata Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pi. 15A, 

 fig. 39; pi. 20, fig. 25. 



Leptaena unicostata Winchell and Schuchert, Geol. Minnesota, 3, 1893, p. 411, 

 pi. 32, figs. 6-9. Whiteaves, Pal. FOBS., 3, pt. 3, 1897, p. 174. Grabau and 

 Shimer, N. A. Index Fossils 1, 1907, p. 226, figs. 271i-j. 



Richmond: Savannah and Wilmington, Illinois; Delafield and Iron Ridge, Wis- 

 consin; Spring Valley and Granger, Minnesota; Lattners, Iowa; Rapids of 

 the Nelson River, Lake Winnipeg, Manitoba; Texas; etc. 



LEPTAGONIA McCoy. See Leptsena Dalman. 



LEPTELLA Hall and Clarke. Genotype: Leptsena sordida Billings. 



Leptella Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 293; llth Ann. Rep. 

 New York State Geol., 1894, p. 277. Miller, N. A. Geol. Pal., 1st App., 1892, 

 p. 688. 



Leptella decipiens (Billings). 



Leptsena decipiens Billings, Pal. Fossils, 1, Geol. Surv. Canada, 1865, p. 74, fig. 



67; p. 219 (adv. sheets 1862); Geol. Canada, 1863, p. 231, fig. 243. 

 Leptella decipiens Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 294. 

 Ozarkian or Canadian: Point Levis, Quebec (Levis-Limestone No. 2); four miles 

 northeast of Portland Creek, Newfoundland (Quebec P). 



Leptella sordida (Billings). 



Leptsena sordida Billings, Pal. Fossils, 1, Geol. Surv. Canada, 1865, p. 73, text 



fig. 66 (adv. sheets 1862); Geol. Canada, 1863, pu 231, fig. 242. 

 Leptella sordida Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 293, pi. 15A, 



figs. 12-16. 

 Ozarkian? (Levis erratic): Point Levis, Quebec. 



LEPTOBOLUS Hall. Genotype: L. lepis Hall. 



Leptobolus Hall, Description n. sp. Foss. from Hudson River Group, 1871, p. 3; 

 24th Rep. New York State Cab. Nat. Hist., 1872, p. 226. Miller, Cincinnati 

 Quart. Jour. Sci., 2, 1875, Jan., p. 10. Nicholson, Rep. Pal. Prov. Ontario, 

 pt. 2, 1875, p. 85. Zittel, Handb. Pal., 1, 1880, p. 665. Miller, N. A. Geol. 

 Pal., 1889, p. 348. Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pp. 73, 165; 

 llth Ann. Rep. New York State Geol., 1894, p. 241. Schuchert, Zittel- 

 Eastman Textb. Pal., 1, 1900, p. 307. Matthew, Trans. Roy. Soc. Canada, 

 2d ser., 8, sec. 4, 1902, p. 102. Grabau and Shimer, N. A. Index Fossils, 1, 

 1907, p. 194. Cumings, 32d Ann. Rep. Dep. Geol. Nat. Res. Indiana, p. 

 890. Schuchert, Zittel-Eastman Textb. Pal., 1913, p. 372. 



LEPTOBOLUS GEMMULUS Matthew. See Lingulella ferruginea. 

 LEPTOBOLUS GRANDIS Matthew. See Lingulella grandis. 



