1234 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



STROPHOMENA RECTA Billings. See Strophomena billingsi. 

 STROPHOMENA RECTA Conrad. See Dinorthis (Plsesiomys) deflecta. 

 STROPHOMENA RETICULATA Shaler. See Leptaena reticulata. 

 STROPHOMENA RHOMBOIDALIS Billings. See Leptsena rhomboidalis. 

 STROPHOMENA RHOMBOIDALIS Meek. See Leptsena richmondensis. 

 STROPHOMENA RUGOSA Safford . See Leptsena rhomboidalis. 



Strophomena nigosa (Rafinesque) . Not recognized . 



Strophomena rugosa (Rafinesque) Blainville, Malacol. Conch., 1, 1825, p. 513, pi. 



53, figs. 2, 2a King, Mon. Permian Fossils, Pal. Soc., 1850, p. 103. Hall and 



Clarke, Pal. New York, 8, pt. 1, 1892, p. 247, figs. 13, 14. Foerste, Bull. Sci. 



Lab. Denison Univ., 17, 1912, p. 87. 



Strophomenes rugosa De France, Diet, des Sci. Nat., 1, 1827, p. 151, and atlas. 

 Silurian: North America. 



Observation. See Hall and Clarke [1892] and Foerste [1912] for discussion of 

 this species. 



STROPHOMENA RUGOSA of authors. See Strophomena planumbona. 



STROPHOMENA RUGOSA var. SUBTENTA Grabau and Shimer. See Strophomena 

 planumbona subtenta. 



Strophomena scofleldi Winchell and Schuchert. 



Strophomena scofieldi Winchell and Schuchert, Amer. Geol., 9, April 1, 1892, p. 



286; Geol. Minnesota, 3, 1893, p. 398, pi. 31, figs. 18-21. 

 Streptorhynchus subsulcatum Sardeson, Bull. Minnesota Acad. Nat. Sci., 3, 



April 9, 1892, p. 335, pi. 4, fig. 39. 

 Trenton (Prosser): Cannon Falls, Minneapolis, and St. Paul, Minnesota; Beloit, 



Wisconsin. 



STROPHOMENA (STROPHODONTA?) SEMIPASCIATA Hall. See Strophonella semifasciata. 

 STROPHOMENA SEMIOVALIS Vanuxem. See Plectambonites sericeus. 



Strophomena(?) semiovalis Shaler. 



Strophomena semiovalis Shaler, Bull. Mus. Comp. Zool., 1, 1865, p. 61. 

 Strophomena arcuata Shaler, ibid., p. 62. 

 Gamachian (Ellis Bay) : Ellis Bay, Anticosti. 



Strophomena septata Winchell and Schuchert. 



Strophomena septata Winchell and Schuchert, Amer. Geol., 9, 1892, p. 285; 



Geol. Minnesota, 3, 1893, p. 390, pi. 30, figs. 1-3. 

 Black River (Decorah): St. Paul, Minneapolis, and Rochester, Minnesota. 



STROPHOMENA SERICEA Conrad. See Plectambonites sericeus. 



Strophomena(?) siluriana Davidson. 



Strophomena siluriana Davidson, British Sil. Brach., Pal. Soc., 1871, p. 303, pi. 

 47, fig's. 1-4. Etheridge, Quart. Jour. Geol. Soc. London, 34, 1878, p. 597. 

 Silurian: England; Cape Leidy, lat. 79 38', Arctic America. 



Strophomena sinuata James. 



Strophomena sinuata James, Cat. Foss. Cincinnati Group, 1871, p. 9 (nom. nud.). 

 Hall and Clarke, Pal. New York, 8, pt. 1, 1892, p. 251. Cumings, 32d Ann. 

 Rep. Dep. Geol. Nat. Res. Indiana, 1908, p. 941, pi. 38, figs. 2-2e. Foerste, 

 Bull. Sci. Lab. Denison Univ., 17, 1912, p. 57, pi. 1, figs. 3a-c. 



