50 PARTULINA, MAUI. 



The locality of this species is not known; radiata and gouldi 

 were stated to be from the Sandwich Islands, and for densilineata 

 no habitat was known. It is not even certain that the three 

 names pertain to one species, though I think that they do. 

 Gould's white-banded specimens were probably different. The 

 original descriptions are given below. 



I believe that Newcomb correctly identified radiatus but un- 

 fortunately the specimens from him in our collection bear no 

 locality. Two of them are illustrated in pi. 13, figs. 8, 9. The 

 shell is distinctly perforate, ovate, with rather straight-sided 

 spire. Spiral striation weak, very faint on the last whorl, 

 whorls weakly convex, the last convex; the suture usually 

 marked with a white line. Embryonic whorls uniform pale 

 brown but darker at the tip; later whorls closely streaked with 

 narrow r streaks or lines of brown, cream and whitish. Lip 

 slightly expanded, more so below, whitish, calloused within. 

 vColumellar fold rather sharp but not prominent. 



Length 18, diam. 11.3, aperture 9.8 mm.; 6 whorls. 



Length 18, diam. 10.5 mm. 



One of the lot has the brown replaced by olivaceous, and an- 

 other has faint traces of several spiral lines on the base. 



While the absence of flammules on the last embryonic whorl 

 is anomalous, yet the species has the appearance of a Maui 



shell. 



Bulimus gouldi Pfr. Shell narrowly umbilicate, ovate-conic, 

 rather solid, very delicately decussate-striatulate, glossy, ele- 

 gantly radiated with ashen, brown and white. Spire conic, 

 rather acute. Whorls 6, a little convex, the last about three- 

 sevenths the total length. Columella twisted plicate, white. 

 Aperture oblong, white within. Peristome narrowly expanded, 

 the margins subparallel, columellar margin broadly reflexed, 

 not covering the umbilicus. Length 19, diam. 10, aperture 9 

 mm. long, 5 wide within. Sandwich Islands, Mus. Cuming 



* f 



Partula densilineata Reeve (pi. 13, fig. 4). 'Shell acumi- 

 nately conical, rather thin, umbilicated, sutures of the spire 

 impressed, whorls rather flattened and finely margined around 

 the upper part, rounded and slightly angled at the lower, colu- 



