228 PROCEEDINGS OF THE ACADEMY OF [June, 



the left, shown as a short Hne in fig. 13a. The aperture is very 

 narrow, inner Hp straight, and heavily calloused in the middle. 



Length 8.8, diam. 3 mm.; about 9 whorls. 



Suhularia has recently been restricted by Dr. Bartsch to the type 

 S. metcalfei A. Ad. Leiostraca distorta Pease forms a second species 

 of the group, no others being known to belong to it. 



Suhularia differs from Melanella {Eulima) by its compressed shape 

 and by having a flattened area at the base of the ventral side, between 

 the columella and a short angular longitudinal ridge on the left side; 

 the aperture is very narrow, more than twice as long as wide, and the 

 inner lip is straight. 



Suhularia is somewhat like Strombiformis {Leiostraca of most 

 authors) in its narrow mouth, but it is probably more closely related 

 to Melanella by the varices. The flattened area is an unique feature. 

 The genus Chileutomia Tate and Cossmann differs by its projecting 

 varices.^ 



The two species known are very distinct by the following characters. 



Spire nearly straight, with varix-lines on the right and left sides 

 (Section Subularia); colored markings present. S. metcalfei. 



Spire strongly curved, with varix-lines on the right side only 

 (Section Hemiliostraca). Shell without color markings, S. distorta. 



A very minute specimen from Smuggler's Bay, Kahoolawe, a 

 larger one from the north coast of Molokai and several from the 

 beach near Waikiki, Oahu, seem to be Subularite, but as part are 

 single specimens and none in fresh condition they are mentioned here 

 merely as an indication that there are other species. Single shells 

 are particularly inconclusive in this family, as there is nothing to 

 definitely mark the adult stage. 



Subularia distorta (Pease). Fig. 13c, d. 



1860. Leiostraca distorta Pease, P. Z. S., p. 438. 



1866. Leiostraca distorta Pease, Sowerby, Cpnch. Icon., PI. 3, fig. 15. 



1886. Eulima peasei Tryon, Man. Conch. VIII, p. 281. 



One of two specimens in the Pease coUection, No. 31706 Mus. 

 Comp. Zool., is figured. The spire is bent to the right, and in the 

 upper part it bends towards the ventral side. There are linear, 

 inconspicuous, impressed varix-lines on the right side of the last two 

 whorls. In a basal view the shell is seen to be strongly compressed 

 between dorsal and ventral sides (fig. 13c). The ventral side is 

 flattened near the base, the flattening bounded by a longitudinal 

 angulation on the left side. The internal axis is faintly visible 



• 9 See Hedley, Proc. Linn. Soc, N. S. Wales, 1930, p. 50.5. 



