124 U.S. NATIONAL MUSEUM BULLETIN 2 39 



pi. 51, figs. 56, 57, from Kamtschatka [Kamchatka], Siberia; 



paratype MCZ 169286 and paratype USNM 611211 ex NYSM 234, 



263, original no. G 2478. NPEE. 

 paupera, Nassa: 1850, PBSNH, vol. 3, p. 155 (Pacific Ocean), 



long. %, lat. % in.; 1852, USEE, vol. 12, p. 262, pi. 19, fig. 330,a-b; 



1862, Otia Conch., p. 70. Figured holotype USNM 5726; paratype 



MCZ 216602 ex Smithsonian Inst. 

 pauxillus, Helix: New name for Helix pusillus Gould, not pusilla 



Vallot 1805, Lowe 1831, Scacchi 1832, Roemer 1836, Pfeiffer 1839. 



See under pusillus, Helix. 

 pectinula, Modiola [Modiolaria] Plate 26, fig. 1 



1841, Invert. Massachusetts, p. 127, fig. 85 (St. Georges Bank [off 

 southern Massachusetts]), length %o, height %, breadth 7 / 20 in. 

 Mentioned as being in Massachusetts State Cabinet no. 159, but 

 specimen lost, and BSNH 2342; 1862, Otia Conch., p. 182; 1870, 

 Invert. Massachusetts, p. 195, fig. 493 [genus changed to Crenella]. 

 Lectotype, here selected, MCZ 216574 ex BSNH 2342. Ideotype 

 USNM 64097 with label "Rec'd. by me from Dr. Gould in his life- 

 time and may be regarded as typical" (W. H. Dall). 



pedestris, Helix: 1846, PBSNH, vol. 2, p. 166 (New South Wales), 

 lat. %, alt. % in.; 1852, USEE, vol. 12, p. 65: " . . . is only a small 

 specimen of H. townsendiana Lea"; 1862, Otia Conch., pp. 18, 243. 



pediculina, Nassa: 1860, PBSNH, vol. 7, p. 332 (Hong Kong Harbor 

 [China], W. Stimpson), axis 6, diam. 4 mm.; 1862, Otia Conch., 

 p. 128. Type lot, USNM 529, not found. NPEE. 



Pelex, new genus: 1852, USEE, vol. 12, p. 153. Type species: 

 Pelex lateralis Gould, by monotypy; 1856, ibid., Addenda and 

 Corrigenda, p. 502: "Pelex is genus Latia Gray 1849"; 1862, Otia 

 Conch., p. 224. 



pellucida, Helix (Caracolla) Plate 37, fig. 7 



1843, PBSNH, vol. 1, p. 157 (Cape Palmas, Liberia [ibid., p. 153], 

 Africa, Drs. Savage and Perkins), lat. 17 A , alt. % in.; 1862, Otia 

 Conch., p. 192. Lectotype, here selected, MCZ 87936 ex BSNH 

 from Dr. Perkins; 3 paratypes 225225 from same BSNH lot. 



penicillata, Helix Plate 39, fig. 4 



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

 PBSNH, vol. 1, p. 138: "... is said to be the young of Helix gilvus 

 'Ferussac'"; 1862, Otia Conch., p. 183: " . . . is a delicately streaked 

 variety of Helix cubensis Pfeiffer." Lectotype, here selected, MCZ 

 169289 ex NYSM 235, 250 original no. A 6225; 38 paratypes MCZ 

 225227, and 3 paratypes USNM 611252 ex same NYSM lot. 



