PLACOSTYLUS, NEW HEBRIDES. 71 



paler, brown or olivaceous ; earlier two or three whorls denuded and 

 dull red. Surface dull or somewhat shining, irregularly wrinkled 

 longitudinally and more or less distinctly decussated by coarse, shal- 

 low spiral sulci ; a strong lens showing a dense, minute, criss-cross 

 scratching of the whole surface. Spire conic, the apex rather acute. 

 Whorls 4^ to 5, convex, the last a little compressed peripherally, and 

 usually having a depression or sulcus plowed along the periphery, 

 following it for some distance behind the lip. 



Aperture subvertical, more than, half the shells length, bluish in- 

 side, the peristome Slightly expanded, a trifle thickened within, yel- 

 low or orange colored ; outer lip straightened or even bent in near 

 the middle. Columella nearly straight, moderately reflexed and 

 adnate, a little twisted, not truncated below, but with a more or less 

 obvious projecting angle where it meets the somewhat retracted basal 

 lip. Parietal callus thin and colorless. 



Alt. 40, diam. 19, length of aperture 24 mill. 



Alt. 37, diam. 17-J, length of aperture 21 mill. 



Alt. 37, diam. 19, length of aperture 22 mill. 



New Hebrides : Aneiteum (Macgillivray). 



Bulimus fuligineus PFR.; P. Z. S., J852, p. 85 ; Conchyl. Cab., 

 p. 157, pi. 48, f. 5, 6 ; Monogr. iii, 301 ; iv, 363 ; vi, 85. CROSSE, 

 Journ. de Conchyl., 1864, p. 129, pi. 7, f. 4. Placo stylus fuligineus 

 KOBELT, Conchyl. Cab., p. 44, pi. 10, f. 5-8, and var., p. 74, pi. 17, 

 f. 8. 



A thinner shell than P. salomonis, with the columellar lip simply 

 reflexed and adnate, not elevated as in the other species. P. fuli- 

 gineus is moreover usually darker and more conspicuously sulcate 

 spirally. 



PI. 11, fig. 2, is Pfeiffer's type, which is an unusually narrow ex- 

 ample, while figures 9, 10 of pi. 14 shows a shell more swollen below 

 the suture than the average. Figures 3, 4 of pi. 11 are perhaps the 

 more normal form. Kobelt's figures (copied on my pi. 14, figs. 11, 

 12) look considerably like my P. heterostylus. 



Pfeiffer describes a var. /3 as tawny with reddish apex, the peri- 

 stome pale, columellar margin dilated and appressed. It is from 

 Aneiteum. Kobelt figures a specimen in the Berlin Museum which 

 Mr. E. A. Smith refers to Pfeiffer's variety (see pi. 6, fig. 10). It 

 is 35 mill, long, and resembles Strophocheilvs rosaceus in appearance. 

 I would consider it a doubtful member of the species. 



