ZOOLOGICAL TAXA OF WILLIAM HEALEY BALL 163 



imparelUu Daphnella (Euhela) 1908, BMCZ, vol. 43, no. 6, pp. 214, 



291, pi. 2, fig. 2 (ALBATROSS sta. 3392, Gulf of Panama; 



USNM 123114). 

 impecunia, Turris (Antiplanes) 1909, USGSPP 59, pp. 18, 27, pi. 4, 



fig. 3 (Miocene, Empire formation, Coos Ba3% Oregon; USNM 



153912). 

 imperforata, Haliotis cracherodii 1919, PUSNM, vol. 56, no. 2295, 



p. 370 (near San Pedro, California; USNM 219850); 1921, 



USNMB112, p. 184, pi. 21. 

 imperforata 'Stearns' Ball, ISeierita recluziana 1909, USGSPP 59, 



p. 88 (San Diego, California). 

 imperforatum, Epitoniiim 1917, PUSNM, vol. 53, no. 2217, p. 476 



(off La Paz, Lower California; USNM 211391). 

 imperforatum, Siniim 1915, USNMB 90, pp. 20, 109, pi. 5, fig. 8 



(Tampa silex beds, Hillsboro River, Florida; USNM 166107). 

 imperialism Chrysodomus 1909, USGSPP 59, pp. 17, 18, 42, pi. 7, 



figs. 1, 3; pi. 18, fig. 1 (Miocene, Empire formation, Coos Bay, 



Oregon; and others; USNM 153897). 

 imperialism Margarita (Titrcicula) 1881, BMCZ, vol. 9, no. 2, p. 42 



(off Cuba); 1889, BMCZ, vol. 18, p. 376, pi. 22, figs. 1, la. 

 imperialis Ball and Bartsch, Turbonilla (Strioturbonilla) 1909, 



USNMB 68, p. 57, pi. 4, figs. 2, 2a (Panama; USNM 206862). 

 implicatiim Ball and Ochsner, Epitoniiim 1928, PC AS, ser. 4, vol. 



17, no. 4, p. Ill, pi. 6, fig. 1 (Pliocene ?, E side Indefatigable 



Island, Galapagos group; CAS 2932). 

 impressa, Modiolaria 1907, SMC, vol. 50, pt. 2, no. 1727, p. 172 



(ALBATROSS sta. 4677, Bering Sea; USNM 110467); [as 



MkscuIms impressiis] 1921, USNMB 112, p. 23, pi. 3, figs. 6, 7. 

 inaequalis, Bathyarca 1927, PUSNM, vol. 70, art. 18, no. 2667, pp. 



3, 12 (off Fernandina [Florida] ; USNM 108179). 

 inaequalis, Myllita 1898, N, vol. 12, no. 4, p. 41 (South Australia). 

 inaguana, Cepolis (Plagioptycha) 1905, BI, p. 38, pi. 12, fig. 1; pi. 



13, fig. 2 (Inagua Island, Bahamas; USNM 105793). 

 inca, Cylichnella (Bullinella) 1908. BMCZ, vol. 43, no. 6, pp. 212, 



242, pi. 11, fig. 3 (ALBATROSS sta. 3392, off Gulf of Panama; 



USNM 123080). 

 incessa, Marginella 1927, PUSNM, vol. 70, art. 18, no. 2667, pp. 4, 



44 (off Fernandina [Florida]; USNM 107976). 

 Incilicornu 1924, PBSW, vol. 37, p. 88. Type-species by original 



designaton: Orygoceras lepto)iema Brusina. 

 incisa, Amphissa versicolor 1916, N, vol. 30, no. 3, p. 27 (no locality 



given; USNM 223294); 1919, PUSNM, vol. 56, no. 2295, p. 331 



(Laguna Beach, California; USNM 12285); 1921, USNMB 112, 



p. 105, pi. 11, fig. 10. 



