PARTULA, TAHITI. 189 



other banded specimens of affinis occurred to my notice in any 

 other part of the island. This is the variety dubia Pse., by 

 Carpenter erroneously referred to varia." [PI. 25, fig. 10, 

 11]. The var. dubia was not defined by Pease, but only 

 mentioned as a form of varia, in P. Z. S. 1864, p. 675. Its 

 first published definition was in Garrett's note, quoted above. 

 Examples of dubia from Pease are figured (pi. 25, figs. 10, 

 11). The smallest dubia seen are only 15 mm. long. 



lie. P. o. AMABILIS Pfeiffer. PI. 26, figs. 1, 2. 



"Shell sinistral, subperf orate, ovate-turrite, rather solid, 

 striatulate, glossy, citrine, the acute apex reddish, suture 

 white-edged. Whorls 5, the upper flat, the rest convex, the 

 last shorter than the spire. Colurnella nearly simple, slightly 

 plicate. Aperture oblong-semioval. Peristome somewhat 

 thickened, white, expanded and reflexed, the columellar mar- 

 gin wide, flat, spreading. Length 23, diam. ll 1 /^, aperture 

 inside 9y 2 mm. long, 5 wide. A variety is somewhat smaller, 

 ornamented with wide blackish-chestnut bands, the peristome 

 livid-brown. ' ' (Pfr. ) . 



"To the eastward between Fautana and Papinoo valley, a 

 distance of about eight miles, there are three valleys, all in- 

 habited by Pfeiffer 's amabilis, a sinistral form which has 

 not a single feature to distinguish it from some of the large 

 turreted Fautaua shells. In the first valley, Pfeiffer's species, 

 though not abundant, were very fine specimens. The next 

 valley, known as Pirai, (the metropolis of the small dextral 

 P. filosa, which occupies the lower part of the valley), is, in 

 the upper part, which trends towards the headquarters of 

 otaheitana, inhabited by the sinistral amabilis. A few im- 

 mature examples were found which were 'banded like lignaria. 

 The only dextral Partulce taken in the two valleys were 

 filosa,, attenuata and hyalina. 



"In the next valley, called Haona, I found the dextral 

 P. affinis abundant, and took a few of amabilis. 



"Both Dr. Pfeiffer and Reeve described the latter species 

 from specimens in the Cumingian collection, and both quote 



