HELIX. 65 



above and below ; aperture minutely seven-plicate, three equal 

 ones on the parietal wall, and four smaller and palatal. 

 Diam. 3'3 mill. 



Mango, Fiji Is. 



H. MAUPITIENSIS, Garrett. PI. 12, figs. 27-29. 



Narrowly, deeply umbilicated, thin, subpellucid, closely ele- 

 vately striated, striae finer below ; yellowish brown, marked with 

 dark chestnut tessellations, sometimes becoming zigzag stripes 

 on the body-whorl, suture rather deep; whorls 6, rounded, 

 slowly increasing, the last one slanting from the shoulder 

 towards the base ; aperture with eight lamellae, four palatal, one 

 columellar and three parietal. Diam. 3 mill. 



Maupiti /., Society Is. 



H. DE GAGEI. Garrett. 



Closely allied to H. Maupitiensis, but may be distinguished by 

 its coarser rib-like striae, more oblique aperture, smaller umbili- 

 cus and more depressed body-whorl. The palate has five and 

 the parietal wall three revolving lamellae ; corneous or yellowish, 

 tessellated and strigated with chestnut. Diam. 3 mill. 



Rurutu, Austral Is. 



Unfigured. 



H. HYSTRICELLOIDES, Mousson. PI. 12, fig. 30. 



Narrowly umbilicated, striate-costulate, radiately marked with 

 whitish and grayish corneous strigations, suture acutely im- 

 pressed; whorls 02, slowly increasing, subinflated, the last a 

 little descending in front, rounded below ; aperture six to eight- 

 lamellate, of which three or four are parietal, the first and third 

 larger, the fourth inconspicuous, three to five palatal, the middle 

 ones largest, the first and last (columellar) smaller. 



Diam. 4*25 mill. 



Ins. Upolu. 

 H. GRAFFEI, Mousson. PI. 12, fig. 31. 



Moderately umbilicated, rather thin, acutely biarcuately 

 costulate-striate, grayish, with zigzag chestnut strigations; 

 whorls 5, slowly increasing, convex, a little tumid towards the 

 suture, the last not descending, rounded below ; aperture with 

 seven lamellae, two on the middle of the parietal wall, and five 

 palatal, whereof the first is smaller. Diam. 5'2 mill. 



Ins. Upolu. 

 5 



