188 PARTULA, TAHITI. 



callosity; columella dentate. Color light or dark chestnut 

 brown, sometimes striped with darker or wholly of a straw 

 color. 



"Var. encircled with three dark reddish brown bands, on 

 middle of last whorl, at the umbilicus, and just beneath the 

 suture. 



"Observations: The above species is allied to P. otaheitana. 

 It is, however, smaller and less elongate." (Pease). 



Garrett writes: "Pease's affinis, which cannot be separated 

 from some of the small abbreviated forms of otaheitana, oc- 

 curs in greater or less abundance in all the valleys from 

 Haona as far as the southeast end of Taiarapu peninsula, 

 and round the opposite coast as far as Papieri on the south- 

 west of Tahiti proper. In Papinoo I discovered a large 

 colony of affinis, many of which had the pinky flesh-colored lip 

 and sinistral form of otaheitana. Far up in the same valley, 

 though common, none but dextral forms were found, and out 

 of thousands taken in the other valleys, not one sinistral ex- 

 ample occurred to my notice. 



Three examples of affinis, received from Pease, and rep- 

 resenting the three color-forms mentioned by him, are fig- 

 ured, pi. 25, figs. 5, 6, 9. All the examples of this lot have 

 the parietal wall dentate. The sculpture of spiral lines is 

 very fine and close, but on the last whorl it is more or less 

 obsolete, especially so in the middle of each whorl. 



In a lot of five examples received from Garrett, one has 

 a small parietal tooth, the others none. All are obscurely 

 streaked with chestnut on a yellow ground, the spire brown. 

 The sculpture of the latter part of the last whorl below the 

 suture, of one of this lot, is drawn in pi. 25, fig. 8. In some 

 other individuals, the spiral lines are subobsolete, as in 

 typical affinis. 



lie. P. o. DUBIA 'Pse.' Garrett. PL 25, figs. 10, 11. 



"In a valley several miles from Papinoo I found a small 

 colony of affinis which were marked by three transverse red- 

 dish chestnut bands like lignaria. And most singular, no 



