70 PLACOSTYLUS, NEW HEBRIDES. 



conic, the apex rather obtuse. Whorls 4J to 5, convex, the last one 

 large, somewhat obliquely produced, convex, sometimes shallowly 

 furrowed at the periphery. 



Aperture subvertical or slightly oblique, ovate, orange colored 

 within, becoming pale in the throat ; peristome a little expanded, 

 more or less thickened within and on its face, orange with whitish 

 edge ; outer lip straightened and sloping, often strongly arcuate above, 

 Columella nearly straight, concave above, twisted or weakly plicate 

 below the middle, slightly or not truncated at the base ; its edge 

 greatly thickened, flattened within, rising high and free above the um- 

 bilical chink. Parietal callus thin or moderate. 



Alt. 36, diam. 20, length of aperture 22 mill. 



Alt. 33, diam. 19, length of aperture 22 mill. 



New Hebrides : Erromanga. 



Partula salomom's PFR., P. Z. S., 1852, p.. 137 ; Monogr. Hel. Viv. 

 iii, 446; iv, 510 Bulimus salomonis PFR., Conchyl. Cab., p. 276, 



pi. 66, f. 10, 11 ; Monogr. vi, 85 DOHRN, Malak. Blatter 1862, p. 



213 CROSSE, Journ. de Conchyl., 1864, p. 131, pi. 7, f. 5. 



Bulimus pyrostomus PFR., P. Z. S., 1860, p. 137; Mai. Blatter, 

 1861, p. 15. Placostylus salomonis TAPPARONE CANEFRI, Viaggio 

 "Magenta," p. 85. Placostylus pyrostomus Pfr., KOBELT, Conchyl. 

 Cab., p. 68, pi. 16, f. 5-8. 



The orange color of the lip and columella within is more extens- 

 ively diffused than in P. fuligineus^ and the columellar lip is flattened 

 on its inner face and rises free above the umbilical chink. 



The variation in form is great, as the figures show. Sometimes 

 the outer lip is built out far beyond the expansion ; and the columellar 

 chink may be either wide or closed. 



A shell referable to P. salomonis as a variety is shown in fig. 9 of 

 pi. 6. It has somewhat over 5 whorls, a heavy parietal callus and 

 small aperture, other features being as in salomonis. Alt. 36J, diam. 

 18, length of aperture 20 mill. The aperture is quite oblique. 

 Kobelt mentions specimens 43 mill. long. 



The identity of salomonis and pyrostomus is generally acknowl- 

 edged. It was originally thought to be from the Solomon Is. 



P. FULIGINEUS (Pfeiffer). PI. 11, figs. 2, 3, 4 ; pi. 14, figs. 9-12. 



Shell imperforate, oblong, solid though not very thick, chestnut- 

 brown or dark brown, with some darker and lighter streaks, the spire 



