RECENT MOLLUSCA OF AUGUSTUS ADDISON GOULD 119 



a smaller paratype; 2 paratypes MCZ 216823 ex Smithsonian 

 Inst, (printed label). 



opercularis, Planorbis: 1847, PBSNH, vol. 2, p. 212 (Rio Sacra- 

 mento, upper California), long. % lat. Xe in.; 1852, USEE, vol. 12, 

 p. 113, pi. 8, fig. 132,a-b; 1862, Otia Conch., p. 42. Figured 

 holotype USNM 5532, last whorl damaged. 



operculina, Helix: 1859, PBSNH, vol. 6, p. 423 (Peel Island [Chichi- 

 jima], Bonin Islands, Wright), axis Ko, diam. % 6 in.; 1862, Otia 

 Conch., p. 102. Type lot USNM 954 not found. 



operosa, Cylichna Plate 7, fig. 4 



1859, PBSNH, vol. 7, p. 140 (Hong Kong Harbor [China], W. 

 Stimpson), axis 4, diam. 1 mm.; 1862, Otia Conch., p. 112. Meas- 

 ured holotype USNM 537, figured by Yen, 1944, Proc. California 

 Acad. Sci., ser. 4, vol. 23, p. 579, pi. 51, fig. 38. NPEE. 



opportuna, Auricula [(Leuconia)] Plate 35, fig. 3 



1859, PBSNH, vol. 7, p. 40 (Loo Choo [Okinawa, Ryukyu Islands], 

 W. Stimpson), long. 8, diam. 4 mm.; 1862, Otia Conch., p. 105. 

 Lectotype, here selected, MCZ 169269 ex NYSM 298, original no. 

 A 6214. NPEE. 



optata, Nassa Plate 16, fig. 4 



1860, PBSNH, vol. 7, p. 331 (Sydney Harbor [New South Wales, 

 Australia], W. Stimpson), axis 10, diam. 6 mm.; 1862, Otia Conch., 

 p. 128. Probable measured holotype, here selected, lectotype 

 MCZ 169270 ex NYSM 15, original no. A 4695. NPEE. 



orbella, Lucina [Diplodonta]: 1851, PBSNH, vol. 4, p. 90 (San 

 Diego [California], T. P. Green), long. %, alt. %, lat. y 2 -% in.; 1853, 

 BJNH, vol. 6, p. 395, pi. 15, fig. 3 (also Santa Barbara [California], 

 E. Jewett); 1862, Otia Conch., p. 212. Figured holotype MCZ 

 169271 ex NYSM 363, original no. A 958 labeled "San Diego"; 

 ideotype MCZ 169272 ex NYSM 364, original no. A 991, labeled 

 "Santa Barbara." 



orientalis 'Gould' Carpenter, Mercenaria: 1864, Rep. British Assn. 

 Adv. Sci. 1863, p. 583 [nomen nudum]. 



ornata, Semele: 1862, PBSNH, vol. 8, p. 281 (Georgia); no measure- 

 ments given; 1862, Otia Conch., p. 239. 



ornata, Turbonilla Plate 15, fig. 12 



1861, PBSNH, vol. 7, p. 406 (Hong Kong [China], W. Stimpson], 

 axis 6.7, diam. 1.5 mm.; 1862, Otia Conch., p. 150. Measured holo- 

 type USNM 556. NPEE. 



ornatus, Obeliscus Plate 9, fig. 5 



1861, PBSNH, vol. 7, p. 403 (China Seas, W. Stimpson), axis 16, 

 diam. 6 mm.; 1862, Otia Conch., p. 147. Measured holotype 

 USNM 523. NPEE. 



