MUSEUM OF COMPARATIVE ZOOLOGY. 185 



ana, P. Isabellina, and P. Pacifica, have been regarded as separate species. The 

 sinistral forms Lave not been less fortunate in adding to the confusion in synon- 

 ymy ; they vary in size and color in an equal degree with the dextral. The syno- 

 nyms of P. Otaheitana Brug. may be enumerated in the order of seniority as 

 follows : P. Otaheitana, P. Vaiiikorensis, P. maura, P. Tahulana, P. Isabellina, 

 P. aniabilis, P. rubescens, P. Reeveaua, P. Pacifica, P. Tahitana ; manuscript spe- 

 cies, P. sinistrorsa, P. crassa, P. sinistralis, P. brevicula, P. perversa, P. turri- 

 cula, Pse. Mss. (non Pse. in A. J. C). 



f P. ovalis Pse., A. J. C, ii. p. 194, 1866. E,aiatea = P. protea. See P. fusca. 



t P. Pacifica Pfr., P. Z. S., p. 125, 1854. This species probably = a large 

 dextral P. Otaheitana without a pillar tooth. 



f P. pallida Pse., Mss. Coll. Pse. = a pale elongate variety of P. faba. 



P. Peasii Cox, P. Z. S., p. 644, pi. 52, f. 2, 1871. Solomon's Island, Dr. Cox. 



f P. peraffinis Pse., Mss. Mon. Helicien, viii. p. 197 = P. elongata (Pfr.). 



f P. perversa Pse., Mss. CoU. Pse., Coll. Brit. Mus. = P. Otaheitana sinis- 

 tral. 



f P. perplexa Pse., Mss. Coll. Pse., Huaheine = P. varia var. This is one of 

 the most beautiful varieties of P. varia. I only detected five specimens in several 

 quarts of P. varia from Huaheine. 



P. PELLUCIDA Pse., p. Z. S., p. 457 = 1871. Guadeleamar, Solomon's Island. 

 " A small shell with a distinctly granular surface " (Pse.), possibly a BuHmus. 



t P. Pfeifferi Cross, J. C, xix. p. 184, 1871. Vanna-Levu, Banks Island, New 

 Hebrides = P. Caledonica. 



f P. pinguis Garr., Mss. in litt. The form of aperture resembles P. rustica, 

 but in size it approximates P. Thalia. It is a terrestrial species, and probably 

 = P. rustica. 



t P. PLANiLABRTJM Psc., P. Z. S., p. 672, 1864. Coll. Pse. Tahaa, Garr. 



t P. PRODUCTA Pse., p. Z. S., p. 671, 1864. Tahiti, Garr. This is a terres- 

 trial species, and may be confounded with dextral banded P. Otaheitana without a 

 pillar tooth. 



f P. propinqua Pse., Mss. Coll. Pse., Tahaa. Mr. Pease, in a label attached 

 to this species, remarks -. " I regard this and P. subangulata as only local varie- 

 ties of P. faba from Tahaa," — an observation applicable to many other so-called 

 species of Partula. 



t P. protea Pse., Mss. Mus. Godeff. Cat., v. p. 92, 1874. Raiatea, Garr. = 

 P. fusca var. See P. fusca. 



t P. pulchra Pse., Mss. Mus. Godeff. Cat., v. p. 92, 1874. Huaheine, Garr. 

 = P. varia, minor form. 



f P. purpurascens Pfr., P. Z. S., p. 335, 1856 = P. rosea, purple variety. 



t P. RADiATA Pse., Mss. Coll. Psc., Coll. A. N. S., ex auctore. Raiatea, Garr. 

 This is a good species ; it has been widely distributed by Mr. Pease and others as 

 P. compressa Pfr. The former possesses very coarse oblique striae, widely re- 

 flected lip, with a keyhole aperture, a pillar tooth, and a slight carination at the 

 periphery ; while the latter is a smooth shell, with a slightly reflected lip, and the 

 piUar tooth is absent. 



