PLACOSTYLUS, NEW HEBRIDES. 73 



Alt. 29, diam. 14 mill.; alt. of aperture 16^, width 10 mill., in- 

 clusive of peristome. 



New Hebrides (Cox). 



Placostylus alienus PILS., Nautilus vi, p. 116 (Feb., 1893). 



Smaller and narrower than any other species of the New Hebrides, 

 and with a conspicuous cord encircling the columella, producing a 

 fold just above the junction of the columella with the parietal wall. 

 Only remnants of a thin yellowish cuticle remain on the type speci- 

 men, but Dr. J. C. Cox states that he has "one specimen with a thin 

 brown epidermis on it, another with the mouth quite pale colored." 



Section Pcecilocharis Kobelt. Group of P. hartmani. 

 These forms somewhat resemble the arboreal members of the Sec- 

 tion Placocharis, of the Solomon Islands. 



a. Cuticle longitudinally streaked, P. hartmani, bicolor, francoisi. 

 a 1 . Cuticle spirally banded, P. turneri, hebridarum. 



P. HARTMANI Kobelt, PL 45, figs. 8, 9, 10, 11, 12. 



Shell compressed-umbilicate, long-ovate, rather thin ; whitish under 

 a pale brown cuticle, streaked with chestnut, the spire denuded, 

 bright orange colored. Surface smooth* save for slight growth-striae. 

 Spire conic, the apex slightly obtuse ; whorls 4J convex, the last in- 

 flated. 



Aperture purplish-white within, ovate, acuminate above ; peris- 

 tome thin, broadly expanded and reflexed, white, the outer lip 

 evenly arcuate, columellar lip reflexed, vertical ; columella concave 

 below, with a weakly convex long fold above ; parietal callus trans- 

 parent, white. 



Alt. 31, diam. 18, length of aperture 23 mill. (Hartman's type). 



Alt. 40, diam. 21, length of aperture 25 mill. (Kobelt). 



New Hebrides; " Aura " Island (Layard); Santo Esperito (Dr. 

 Francois). 



Charts rossiteri HARTMAN, Proc. Acad. Nat. Sci. Phila., 1889, p. 

 91, pi. 5, f. 2, 2 a (June 18, 1889); not Bui rossiteri Brazier, 1881. 

 Placostylus (Charis} hartmanni KOBELT, Conchyl. Cab. p. 78, pi. 

 18, f. 7-9. J. MABILLE, Soc. d'Hist. Nat. d'Autun, viiie Bulletin, 

 p. 410, (1895). 



My description and figures 8-10 are from Dr. Hartman's type in 

 coll. Acad. Nat. Sci. Kobelt describes fine spiral striae, which are 

 wanting on this specimen, and his shell has a stronger columellar 



