ZOOLOGICAL TAXA OF WILLIAM HEALEY DALL 169 



Irenosyrinx 1908, BMCZ, vol. 43, no. 6, p. 257. Type-species by 



original designation: Plevvotnnia (LciicosijriHx) goodei Dall. 

 iridea, Solariella luhrica 1889, BMCZ, vol. 18, pp. 32, 382 (off Cape 



Florida). 

 iridium, Calliostoma 1896. PUSNM, vol. 18, no. 1034, p. 7 (West 



Mexico; and others; USNM 122957); 1902, PUSNM, vol. 24, no. 



1264, p. 552, pi. 39, fig. 3; 1908, BMCZ, vol. 43, no. 6, p. 348, pi. 



19, fig, 5. 

 iris, Margarita 1881. BMCZ, vol. 9, no. 2. p. 43 (Sand Key); [as 



Solariella iris] 1889, BMCZ, vol. 18, p. 382, pi. 21, figs. 7, 7a. 

 irma, Macoma 1900, TWFIS, vol. 3, pt. 5, p. 1047, pi. 46, fig. 15 



(Oligocene, Ballast Point, Tampa Bay, Florida); 1905, Schuchert, 



Dall et al, USNMB 53, pt. 1, p. 381 (USNM 157906); 1915, 



USNMB 90, p. 153, pi. 24, fig. 9. 

 irregidaris, Barbatia (Calloarca) 1898, TWFIS, vol. 3, pt. 4, p. 623, 



pi. 33, fig. 5 (Oligocene, Ballast Point, Tampa Bay, Florida; and 



others); 1905, Schuchert, Dall et al, USNMB 53, pt. 1, p. 90 



(Caloosahatchie River, near Fort Thompson, Florida; USNM 



107719); [as Area (Barbatia) irregularis] 1915, USNMB 90, p. 



119, pi. 17, fig. 4. 

 ischna, Mangdia 1927, PUSNM, vol. 70, art. 18, no. 2667, pp. 3, 31 



(offFernandina [Floridal ; USNM 107950). 

 Ischnoplax 'Carpenter' Dall, 1879, SREA, art. 4, p. 78; 1879, 



PUSNM, vol. 1, no. 48, p. 296. Type-species by original designa- 

 tion: IseJutoplax peetiiiatHs (Sowerby). 

 Ischnoradsia 'Carpenter non Shuttleworth' Dall, 1879, SREA, art. 



4, pp. 79, 113; 1879, PUSNM. vol. 1. no. 48, pp. 297, 331. 



Type-species not designated. 

 helica 1918, PBSW, vol. 31, p. 137. New name for Isapis Adams, 



1853, )iot Westwood, 1851. 

 hnoradsia 1871, AJC, vol. 7, pt. 2, p. 135 [error for Ischnoradsia 



Shuttleworth! . 

 isogonia, Pleurototnella (Gymnobela) 1908, BMCZ, vol. 43, no. 6, pp. 



214, 279, pi. 4, fig. 3 (ALBATROSS sta. 3393, Gulf of Panama; 



USNM 123112). 

 isogramma, Ilyanassa (Paranassa) 1892, TWFIS, vol. 3, pt. 2, pp. 



212, 239, pi." 20, fig. 16 (Miocene, James River, near Bellefield, 



Virginia; and others); 1905, Schuchert, Dall et al, USNMB 53, 



pt. 1, p. 328 (Miocene, Wilmington, North Carolina; USNM 



87751). 

 isomitratus. Conns 1896, PUSNM, vol. 18, no. 1035, p. 43 (Chipola 



beds, Chipola River and Alum Bluff beds near De Funiak 



Springs, Florida; USNM 113980); 1903, TWFIS, vol. 3, pt. 6, p. 



1633, pi. 60, fig. 26. 

 ithitoma, Anachis 1890, TWFIS, vol. 3, pt. 1, p. 136, pi. 12, fig. 6 



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



