210 HELIX-CAM JENA. 



periphery bordered above and below by narrower chestnut-brown 

 bands, the upper one of which is visible above the suture on the 

 spire-whorls ; and with a broad white zone surrounding the brown 

 umbilicus. Surface delicately striate obliquely. Spire low, apex 

 obtuse, suture slightly impressed. Whorls 4J, slightly convex, rap- 

 idly widening, the last deflexed in front. Aperture very oblique, 

 elliptical-truncate, brownish and showing the band within ; peri- 

 stome thin, narrowly reflexed all around, dark brown except at the 

 terminations of the white bands, which continue to the edge of the 

 reflexed lip ; columellar termination reflexed over the narrow but 

 profound umbilicus. 



Alt. 19, greater diam. 27 , lesser 24 mill. 



Busuanga, island of Busuanga, Philippines. 



H. palumba Souv., Journal de Conchyl. 1858, p. 369 ; 1862, t. 

 10, f. 5. HIDALGO, Journ. de Conchyl. 1889, p. 297, t. 14, f. 1, 

 (1890). 



I agree with Hidalgo in separating this shell from H. saulice Pfr. 

 It is a very thin, light species, smoother than any of the forms of 

 palaivanica, and it always has white spots on the lip at the termina- 

 tions of the white bands. The locality given above is that of the 

 following color-variety, described by Hidalgo. 



VAR. /9. Shell larger, more solid, transverse strise almost lack- 

 ing ; chestnut, with peripheral and basal white zones (pi. 41, fig. 15). 



H. EGREGIA Deshayes. PI. 37, figs. 43, 44. 



Shell globose, a little depressed, white, transversely 2-banded with 

 brown ; spire conic-depressed, apex obtuse ; whorls 4, a little con- 

 vex, slowly increasing, the last depressed, convex, base imperforate, 

 at the periphery very obtusely angulated ; aperture lunate-circular ; 

 peristome reflexed, thickened, margined outside with brown ; colu- 

 mella dilated, depressed, calloused ; left margin thickened, short. 

 (Dh.) Alt. 28, diam. 38 mill. 



Habitat unknown. 



H. egregia DH. in Fer. Hist., i, p. 302, t. 102, f. 17, 18. 

 A species not noticed by recent authors, evidently grouping with 

 //. monochroa. 



H. AVUS Pfeiffer. PI. 27, figs. 15, 16, 17. 



Shell umbilicated, depressed, solid, obliquely striatulate, some- 

 what shining, pale fulvous ; spire short, convex ; whorls 4, scarcely 

 convex, sensibly increasing, the last carinated, convex above and 



