330 



PROCEEDINGS OF THE ACADEMY OF 



[Dec, 



upward in a long straight process, as in S. aratrum. The aperture 

 is white within, striate, especially above and below, the strise being 

 weaker in the middle. The thick outer lip is tinged with brown at 

 the edge. The callous of the inner lip and ventral face is white, 

 with a faint brown tint on the convexity, but no chestnut blotch. 

 Other characters about as in S. aratrum. 



Length 75, diam. about 41 mm.; 10 whorls. 



While this shell has much in common with Strombus aratrum 

 Martyn, it differs in color of the aperture and ventral callous, and 

 in the far stronger spiral sculpture. It appears to be widely spread 

 in the islands, but is nowhere common. 



Phasianella variabilis (Pease). Fig. .31. ^ 



In a peculiar color-variety of this species, which may be called 

 mutation trizonalis, the pattern is reduced to three spiral bands. 



Fig. 31. — Phasianella variabilis mut. 

 trizonalis. 



Fig. 32. — Nerifina hryance. 



It is from Kailua, Hawaii, 

 collection. 



Illustrated in fig. 31, from the Brvan 



Neritina bryanae n. sp. Fig. .32. 



Paumalu, Oahu. Type No. 117631, A. N. S. P., coll. by W. A. 

 and E. L. Bryan. Paratypes in Bryan collection. 



The shell is very small, semiglobose, polished, pale gray, having 

 four principal spiral bands of oblong, opaque white spots, and two 

 zones composed of fine reddish longitudinal lines. The spire is very 

 short, whorls about 2|. The aperture is very oblique. The callous 

 is not extensive, bluish or grayish white. Columellar edge straight, 

 having two or three teeth and notches barely indicated. In profile 

 view a strong tooth may be seen at the upper third of the columellar 

 edge. The operculum is unknown. 



Length 2.1, diam. 2.2 mm. 



