202 U.S. NATIONAL MUSEUM BULLETIN 287 



mediocre, Gyrineum 1909, USGSPP 59, pp. 18, 54, pi. 7, fig. 6 

 (Miocene, Coos Bay, Oregon; Miocene, Bogachiel River, Wash- 

 ington; USNM 153900). 



medius, Pyriinculus 1927, PUSNM, vol. 70, art. 18, no. 2667, pp. 3, 

 24 (off Fernandina [Florida]; USNM 107923). 



meekii, Ovulactaeon 1889, BMCZ, vol. 18, pp. 5, 43, pi. 33, figs. 3, 4 

 (off Havana [Cuba]; W of North Bimini, Bahamas; USNM 

 61228). 



meeki, Sphaerium 1924, USGSPP 132-G, p. Ill, pi. 26, fig. 8 

 (Castle Creek, Idaho; USNM 333521). 



meekii, Trinacria 1898, TWFIS, vol. 3, pt. 4, p. 604, pi. 32, fig. 17 

 (Oligocene, Chipola River, Calhoun County; Oak Grove, Santa 

 Rosa County, Florida); 1905, Schuchert, Ball et al, USNMB 53, 

 pt. 1, p. 665 (Santa Rosa County, Florida; USNM 135824). 



meekiana, Mesorhytis 1889, BMCZ, vol. 18, pp. 14, 172, pi. 36, fig. 7 

 (off Morro Light, Cuba; and others). 



megalobasis, TurrUella 1892, TWFIS, vol. 3, pt. 2, p. 310, pi. 17, 

 fig. 11 (Miocene, Ballast Point, Tampa Bay, Florida); 1905, 

 Schuchert, Dall et al, USNMB 53, pt. 1, p. 677 (USNM 112596); 

 1915, USNMB 90, p. 98, pi. 14, fig. 6. 



megameris, Lucina 1901, N, vol. 15, no. 4, p. 41 (Clairemont, St. 

 Ann's Parish, Jamaica); [as Phacoides (Pseiidomiltha ?) mega- 

 meris] 1901, PUSNM, vol. 23, no. 1237, p. 829, pi. 42, fig. 1. 



megas, Crenella 1902, PUSNM, vol. 24, no. 1264, p. 559 (ALBA- 

 TROSS sta. 2795, Panama Bay; USNM 96256); 1903, PUSNM, 

 vol. 26, no. 1342, p. 950, pi. 62, fig. 4. 



megas, Planorbis (Menetus) exacuous 1905, HAE, vol. 13, p. 91 

 (Birtle, Manitoba, Canada). 



megasoma, Polygyra germana 1905, HAE, vol. 13, p. 26 (northern 

 California). 



megathyris, Dentalium 1890, PUSNM, vol. 12, no. 773, p. 293, pi. 9, 

 fig. 1 (USFC sta. 2807, near Galapagos Islands; and others); 

 1908, BMCZ, vol. 43, no. 6, p. 357, pi. 19, fig. 1. 



meigsii, Physa 1890, TWFIS, vol. 3, pt. 1, p. 22, pi. 10, fig. 12 

 (Caloosahatchie marls [Florida]); 1905, Schuchert, Dall et al, 

 USNMB 53, pt. 1, p. 506 (Pliocene, Caloosahatchie River, near 

 Fort Thompson, Florida; USNM 112561). 



melampoides, Actaeon 1881, BMCZ, vol. 9, no. 2, p. 95 (BLAKE 

 sta. 19 [off Bahia Honda, Cuba]); 1889, BMCZ, vol. 18, p. 41, pi. 

 17, fig. 2; 1889, USNMB 37, pi. 17, fig. 2; pi. 46, fig. 15. 



melanitica, Mangilia i)i Bush, 1885, U.S. Comm. Fish and Fisher- 

 ies, Commissioner Rpt. 1883, p. 580, lui.; Bush, 1885, Trans. 

 Connecticut Acad., vol. 6, p. 459, n.n.; Dall, 1885, BUSGS 24, p. 



