94 U.S. NATIONAL MUSEUM BULLETIN 239 



61, 245. Holotype USNM 5569; 2 paratypes MCZ 216593 ex 

 Smithsonian Inst, (printed label). 



involuta, Achatina [Subulina] Plate 42, fig. 1 



1843, PBSNH, vol. 1, p. 158 (Cape Palmas, Liberia [ibid., p. 153], 

 Drs. Savage and Perkins), long. 1}{ , lat. % in.; 1862, Otia Conch., 

 p. 192. Lectotype, here selected, MCZ 169202 ex NYSM 196, 

 original no. A 1209; 12 paratypes MCZ 169203 and 2 paratypes 

 USNM 611242 from same NYSM lot; 10 paratypes MCZ 155975 

 ex C. B. Adams coll. from G. A. Perkins. 



iota, Chemnitzia Plate 19, fig. 5 



1861, PBSNH, vol. 7, p. 406 (hab.?), axis 2 + , diam. 0.7 mm.; 



1862, Otia Conch., p. 151. Holotype USNM 389, from Port 

 Jackson [New South Wales, Australia]. NPEE. 



irradiata, Helix (Nanina) [Parthena]: 1846, PBSNH, vol. 3, p. 178 

 (New Holland [Australia]), lat. %, alt. % in.; 1852, USEE, vol. 12, 

 p. 34, pi. 5, fig. 65,a-c (Bay of Islands, New Zealand, Brackenridge) ; 

 1862, Otia Conch., pp. 25, 244. Figured holotype USNM 5467. 



irrorata, Peronia: 1852, USEE, vol. 12, p. 291, pi. 21, fig. 383,a-b 

 (in tide pools, Bay of Islands, New Zealand), long. 1, lat. K, alt. 

 % in.; 1862, Otia Conch., p. 226. 



irroratum, Cerithium: 1849, PBSNH, vol. 3, p. 119 (hab.?), 

 length %, breadth % in.; 1852, USEE, vol. 12, p. 148, pi. 10, fig. 

 168,a; 1862, Otia Conch., p. 61. Figured holotype USNM 5568; 

 paratype MCZ 169206, ex NYSM 55, original no. G 2570 from 

 California; paratype MCZ 216587 ex Smithsonian Inst, (printed 

 label). 



jacksoni, Nucula [Leda]: 1841, Invert. Massachusetts, p. 102, fig. 65 

 (landslip at Pride's Bridge, Presumscott River, Westbrook, Maine, 

 Sept. 1837; Augusta [Maine], C. T. Jackson), length 1, height 

 %, breadth % in.; 1862, Otia Conch., p. 181; 1870, Invert. Massa- 

 chusetts, p. 163, fig. 469 [genus changed to Leda]: "The shell, 

 known to me as a fossil only, proves to be living abundantly in 

 more northern seas." 



jacobaeus, Chiton [(Leptochitori)] Plate 22, fig. 3 



1859, PBSNH, vol. 7, p. 164 (Simoda [Shimoda, Japan], W. Stimp- 

 son), long. 12, lat. 5 mm.; 1862, Otia Conch., p. 117. Measured 

 holotype USNM 2078; paratype USNM 24127, reduced to plates. 

 NPEE. 



jaculanda, Mitra Plate 4, fig. 5 



1860, PBSNH, vol. 7, p. 332 (China Seas, W. Stimpson), axis 8, 

 diam. 2.5 mm.; 1862, Otia Conch., p. 129. Measured holotype 

 USNM 24198, original no. 403. NPEE. 



