56 U.S. NATIONAL MUSEUM BULLETIN 239 



circumsutus, Trochus [Tectus]: 1849, PBSNH, vol. 3, p. 106 

 (Madagascar?), lat. % , alt. %„ in.,* 1852, USEE, vol. 12, p. 176, 

 pi. 13, fig. 220,a; 1862, Otia Conch., pp. 57, 245. Figured holo- 

 type USNM 5620; paratype USNM 612323, dead specimen. 



cistula, Pandora: 1850, PBSNH, vol. 3, p. 217 (East Patagonia 

 [Argentina], long. 1%, lat. %, alt. lKo in.; 1852, USEE, vol. 12, 

 p. 396, pi. 33, fig. 500,a-b; 1862, Otia Conch., p. 77. Figured 

 holotype USNM 5887. 



cithara, Mangelia [Cythara]: 1849, PBSNH, vol. 3, p. 140 (Feejee 

 [Fiji] Islands), long. %, lat. % in.; 1852, USEE, vol. 12, p. 250, 

 pi. 18, fig. 313,a-b; 1862, Otia Conch., pp. 63, 245. Figured holo- 

 type USNM 5710. 



citharella, Cyclostoma [Japonia]: 1859, PBSNH, vol. 6, p. 425 

 (Ousima [Amami-O-shima, Ryukyu Islands], W. Stimpson), diam- 

 eters % in.; 1862, Otia Conch., p. 104. Type lot USNM 1916, not 

 located. NPEE. 



citrullus, Patella: 1846, PBSNH, vol. 2, p. 149 (Funchal, Madeira), 

 long. 1%, lat. lji, alt. K in.; 1852, USEE, vol. 12, p. 325, pi. 29, 

 fig. 448,a-b: 1862, Otia Conch., p. 8. Figured holotype USNM 

 5838. 



clathratum, Cyclostoma [Chondropoma] Plate 41, fig. 3 



1842, BJNH, vol. 4, no. 1, back cover (Cuba [J. Bartlett]); 1843, 

 PBSNH, vol. 1, p. 138: ". . . is Cyclostoma rugulosum Pfeiffer"; 

 1862, Otia Conch., p. 183. Lectotype, here selecetd, MCZ 169087 

 ex NYSM 329, original no. A 1649, labeled "Socotora Island" [Gulf 

 of Arden]; 3 paratypes MCZ 169088 and paratype USNM 611208 

 from same NYSM lot. 



clathratus, Triformis Plate 13, fig. 1 



1861, PBSNH, vol. 7, p. 388 (China Seas, W. Stimpson), axis 4, 

 diam. 1.5 mm.; 1862, Otia Conch., p. 144. Type lot USNM 330, 

 under which the following note appears in the catalog: "Broken 

 and worn, probably the same as 245 [Triformis intercalaris Gould]." 

 Holotype Redpath Mus. 5240 labeled [USNM] 330 C.S. [China 

 Seas]. NPEE. 



clavatum, Dentalium: 1859, PBSNH, vol. 7, p. 166 (Hong Kong 

 [China], not uncommon, W. Stimpson), long. 10, diam. 2 mm.; 1862, 

 Otia Conch., p. 119. Holotype USNM 24245, original no. 550; 

 figured by Pilsbry, 1898, Manual of Conchology, ser. 1, vol. 17, p. 

 185, pi. 26, figs. 80, 81; paratype MCZ 169089 ex NYSM 151, 

 original no. G 2411. 



cognata, Anodon[ta] : 1850, PBSNH, vol. 3, p. 294 (Nisqually [near 

 present site of Tacoma] and near Fort Vancouver [Washington], 

 Fox), long. 3, alt. 1%, lat. 1 in.; 1852, USEE, vol. 12, p. 435, pi. 38, 



