GYLIAUCHEN. 219 



is, however, larger, has the last whorl less freely produced, is 

 keeled at the middle, and the spire is more elevated" (Smith). 



The angular lamella is very long, reaching nearly to the 

 edge of the lip ; parietal also long but deeply immersed, its 

 front end projecting shortly in front of the inner end of the 

 angular. Upper and lower palatals and columellar lamella 

 are about equal. The large, viiiaceous-russet or pale brown 

 first whorl is beautifully granulose, the later whorls having 

 strong spiral threads crossed by irregular, lower growth- 

 wrinkles. Alt. 1.5, diarn. 2.7 mm. or somewhat smaller. 



It is a remarkable little shell. Mr. Smith's figure (copied 

 in fig. 10) represents one of the lowest examples. Some others 

 are higher, as in fig. 5. It is closely related to the following 

 species. 



8. GYLIAUCHEN DOHERTYI (Fulton). PI. 37, figs. 7, 8, 9. 



Shell dextral, triangular, umbilicus deep and moderately 

 wide, almost smooth; whorls 4, first three small, convex, 

 body- whorl large, somewhat depressed in the center and keeled 

 above and below, slightly ascending; interior of aperture 

 armed with five teeth, two on parietal wall, two palatal teeth, 

 and one on the columellar side of the aperture ; peristorne 

 subcircular, expanded, continuous. Diam. maj. 2.75, alt. 2 

 mm. (Fulton). 



Tenimber Island (Win. Doherty). 



Hypselostoma dohertyi FULTON, Proc. Malac. Soc. Lond., 

 iii, March, 1899, p. 215, pi. 11, f. 17. 



Allied to H. everetti Smith from Kalao Island, but this 

 species is narrower, the aperture does not project so far from 

 the body-whorl, it is more closely coiled below, and is not per- 

 spectively umbilicated (Fulton). 



The aperture has a triangular, somewhat trefoil shape. 

 The angular lamella is long, but the inner half is quite low ; it 

 does not reach nearly to the edge in front. Parietal lamella 

 long and straight. The columellar lamella and upper palatal 

 plica are about equal, the lower palatal somewhat longer; all 

 enter directly. There are quite small basal, subcoluniellar 

 and infraparietal teeth, and some smaller ones on the borders 



