82 PLACOSTYLUS, SOLOMON IS. 



misidentification of the latter ; and in translating Cox's English 

 inches into millimeters he makes an error. 



P. GUPPYI Smith. PI. 35, fig. 26. 



" Shell rimate, long-o\ 7 ate, acuminate above, rather solid ; rufes- 

 cent, covered with a brown cuticle which is more or less worn off 

 above ; longitudinally wrinkle-striate, sometimes obsoletely malleated 

 on the last whorl. Whorls 5 to 6, rapidly increasing, the earlier 3 

 rather flattened or slightly convex, the penultimate a little convex, 

 the last whorl more convex, large, oblong, submarginate and lightly 

 corrugate-plicate below the oblique suture. 



"Aperture inversely ear shaped, exceeding half the total length of 

 the shell, pale reddish within, becoming darker towards the lip ; 

 peristome thickened, slightly expanded, reddish, the margins joined 

 by a thin whitish parietal callous ; columellar margin broadly ex- 

 panded in the umbilical region, forming a strong white fold in the 

 aperture, which is armed with a prominent white tubercle above the 

 columellar fold. Length 80, diam. 37, aperture 40 mill, long inside, 

 19 wide" (Smtth). 



Solomon Is. (Brazier). 



Placostylus guppyi E. A. SMITH, P. Z. S., 1891, p. 489, pi. 40, 

 f. 6. 



" The species does not compare closely with any other form. It 

 is rather ventricose, but less so than P. eddystonensis, but in other 

 respects it is quite different. The epidermis is of a rich brown color, 

 here and there striped with a darker tint. The columellar fold and 

 the tubercle above are strongly developed. I have named this in- 

 teresting species after Dr. H. B. Guppy, who has considerably ad- 

 vanced our knowledge of the fauna of the Solomon Islands " (Smith). 



I have seen a single specimen referable to this species. It agrees 

 well with Smith's description and figure, except that the strong in- 

 ternal thickening of the outer lip is whitish and extends only about 

 two-thirds up the lip, the upper third being conspicuously thinner, 

 and the free edge of the columellar fold is rather thin, sharp, and 

 bent outward, making a sort of flange. It measures 79 mill, long, 

 38 wide, and the length of the aperture witli peristome is 44 mill. 

 There remain less than 5 whorls, the apex being amputated and 

 plugged. This specimen was received from Dr. J. C. Cox with the 

 locality Solomon Is. 



