312 



PROCEEDINGS OF THE ACADEMY OF 



[Dec. 



slightly (fcnvex. The aperture is small, ovate. The outer lip curves 

 forward fery strongly in the middle. 



Lengtl 4.5, diam. 1.6, length of aperture 1.2 mm.; 10 whorls. 



Melanellalunata n, sp. Fig. 6. 



Mokii Point, Oahu. Type No. 117634, A. N. S. P., collected by 

 Mrs. Aw. Let son. 



The nell is rather slender, somewhat solid, white, very strongly 

 curved o the right and a little backward above. The whorls are 

 nearly ftat, and marked with varix-lines on the right, becoming 

 dorsal bove. Suture superficial, distinctly but shortly descending 

 to eaclvarix-line and to the aperture, broadly bordered below with 

 gray. The aperture is small, ovate. The outer lip moderately, 

 archedforward in the middle. 



B 



Peas 



'ig. 5. — Melanella letsonce. 



Fig. &.— Melanella lunata. 



Legth 6.6, diam. 2.3, length of aperture 1.75 mm.; 10 whorls 

 remaning, the apex being imperfect. 



its strong curvature this species resembles Subularia distorta 

 , but there is no ridge or keel on the left side of the base, as 



in tb species of Subularia. 



Subuiria delicata n. sp. 



IV^)kapu Point, Oahu. Type No. 117632, A. N. S. P., collected 

 by Its. A. F. Letson. 



Te shell resembles S. metcalfei, but differs by being smaller and 

 deciedly more slender. It is thin, pellucid, showing the internal 

 colum and partitions through the shell. The spire is straight. 



