PLACOSTYLUS DIPLOMORPHA. 119 



Diplomorpha coxi HAKTMAN, Proc. Linn. Soc. N. S. Wales (2), 

 vi, p. 571, pi. 21, f. 1, 3, 6 (Sept. 30, 1891). Not P. coxi Pease, 

 see p. 90. 



Not nearly allied to any other species, though P. bernieri and 

 P. ruga resemble it somewhat. What relation it holds toward 

 P. coxi Pse. (see p. 90), said to be from the Solomon Is., remains 

 to be ascertained ; but there is evidently some resemblance. De- 

 scription and figure from the type, in coll. Dr. J. C. Cox. 



P. RUGA (Hartman). PI. 72, fig. 15. 



" Shell moderately thick, translucent, ovate-elongate, body-whorl 

 somewhat inflated. Whorls 5J, rounded, suture impressed, crenulate. 

 Four apical whorls with minute spiral stria3, aperture rounded oval, 

 spire half the length, epidermis absent, oblique lines of growth coarse, 

 umbilicus compressed, lip white, reflected, flat, with a heavy deposit 

 on the pillar lip. Color white. Height 28, width 15 mill.; height 

 of aperture 10, width of aperture 6 mill." (Hartm.) 



New Hebrides : Segon Island. 



Bulimus ruga HARTM., Proc. Acad. Njat. Sci. Phila., 1890, p. 284, 

 pi. 3, f. 1. Diplomorpha ruga ANCEY, Nautilus xi, p. 26 (July, 

 1897). 



" This shell, of which I have seen but two weather beaten exam- 

 ples, has the facies of a Partula, to which it may eventually be as- 

 signed. At every stage of growth the upper angle of the labium 

 leaves a fold on the suture, giving it the appearance of a ruffle, hence 

 the name." (Hartman.) 



P. BERNIERI (Hartman). PL 72, fig. 16. 



" Shell moderately thick, translucent, ovate-elongate, whorls 5-J, 

 rounded, suture impressed, surface with fine elevated, regular longi- 

 tudinal striae. Spire more than half the length, epidermis absent. 

 Color white, umbilicus compressed, aperture irregularly oval, of a 

 beautiful reddish-orange color within, lip white, reflected and con- 

 cave ; pillar lip with a heavy deposit. Height 23, width 15 mill.; 

 height of aperture 10, width of aperture 7 mill." (Hartm.} 



New Hebrides : Segon Island (Bernier). 



Bulimus bernieri HARTM., Proc. Acad. Nat. Sci. Phila., 1890, p. 

 284, pi. 3, f. 2 Diplomorpha bernieri ANCEY, Nautilus xi, p. 26. 



Neither P. ruga or P. bernieri are known to me by specimens. 



