126 U.S. NATIONAL MUSEUM BULLETIN 239 



pertenuis, Helix: 1846, PBSNH, vol. 2, p. 172 (Aurora Island or 

 Metia [Makatea, Tuamotu Islands], J. P. Couthouy), lat. %, alt. 

 Xo in.; 1852, USEE, vol. 12, p. 45, pi. 5, fig. 60,a-c; 1862, Otia 

 Conch., p. 20. Figured holotype USNM 5462. 



perula, Tellina [Arcopagia]: 1850, PBSNH, vol. 3, p. 254 (Feejee 

 [Fiji] Islands, Mr. Hawkins), long. X, alt. %, lat. % in.; 1852, 

 USEE, vol. 12, p. 409, pi. 35, fig. 516,a-c; 1862, Otia Conch., pp. 80, 

 246. Half figured holotype USNM 5903 ; paratype USNM 612316; 

 paratype MCZ 216578 ex Smithsonian Inst, (printed label). 



petaloides, Chiton [Lucia]: 1846, PBSNH, vol. 2, p. 144 (Sandwich 

 [Hawaiian] Islands), long. X, lat. % in.; 1852, USEE, vol. 12, p. 328, 

 pi. 28, fig. 435,a-b (Kauai and Oahu, Sandwich [Hawaiian] Islands) ; 

 1862, Otia Conch., pp. 6, 242. Probable holotype USNM 12922 

 consists of 5 plates only. 



petechialis, Doris: 1852, USEE, vol. 12, p. 296, pi. 22, fig. 391,a 

 (Honolulu, Oahu [Hawaiian Islands], long. 2%, lat. \}{ in.; 1862, 

 Otia Conch., p. 227. 



peteningensis, Cingula: 1852, USEE, vol. 12, p. 130, pi. 9, fig. 

 152,a-b (found adhering to grass on the margin of Lagao de 

 Peteninga, about 6 miles from Rio de Janeiro [Brazil] near the 

 northern entrance of the harbor; the water is here quite saline, 

 the sea breaking into the lake in storms; J. P. Couthouy), length 

 X, breadth Xo in.; 1862, Otia Conch., p. 224. 6 syntypes USNM 

 20648; 12 syntypes MCZ 216776 ex Smithsonian Inst, (printed 

 label). 



petitii, Helix (Streptaxis) Plate 38, fig. 12 



1844, BJNH, vol. 4, p. 458, pi. 24, fig. 7 (Tavoy, British Burmah 

 [Burma], F. Mason), length %, breadth less than % in.; 1862, Otia 

 Conch., p. 183. Figured holotype MCZ 169290 ex NYSM 230, 

 original no. A 1864 and 2 paratypes USNM 611232 from same 

 NYSM lot; paratype MCZ 136608 ex BSNH 15340. 



petrinus, Unio Plate 31, fig. 4 



1855, PBSNH, vol. 5, p. 228 (Llanos River, Texas, T. H. Webb), 

 long. IX, alt. IX, lat. % in.; 1862, Otia Conch., p. 218. Measured 

 holotype MCZ 169291 ex NYSM 708, original no. A 6405. 



petrosa, Paludina Plate 43, fig. 3 



1843, PBSNH, vol. 1, p. 144 (Tavoy, British Burmah [Burma], 

 F. Mason); no measurements; 1862, Otia Conch., p. 191. Lecto- 

 type, here selected, MCZ 169292 ex NYSM 99, original no. A 5131; 

 paratype MCZ 169293 and paratype USNM 611227 from same 

 NYSM lot. 



