PLACOSTTLUS, SOLOMON IS. 



The species is named for a naturalist who contributed shells to 

 Cunning's collection. 



Eddystone, Simbo or Narovo Island is a small volcanic islet, 

 about four miles long, and lying west of the north end of New 

 Georgia. 



P. STUTCHBURYI (Pfeiffer). PI. 36, figs. 35, 36, 37. 



Shell subumbilicate, ovate fusiform, rather thin, striate, slightly 

 decussated by very fine spiral stria?, shining, tawny, with radiating 

 darker [longitudinal] lines. Spire almost regularly conic, somewhat 

 obtuse ; suture white edged. Whorls 5, a little convex, the last 

 three-fifths the length of shell, shortly and arcuately ascending in 

 front, tapering at the base. 



Aperture reversed ear-shaped, acute above, usually with a par- 

 ietal nodular tubercle, pearly within ; columella white, moderately 

 folded ; peristome of a flesh-tawny color or .'hite, the right margin 

 almost regularly arcuate, expanded and reflexed, the columellar mar- 

 gin dilated, flat, nearly adnate. Length 53, diam. [25], length of 

 aperture inside 30 mill. (P/V.). 



Neiv Georgia, Solomon h. (Brazier). 



BiiUnms stutcliburyi PFR., P. Z. S., 1860, p. 137, pi. 51, f. 8; 



Malak. Bl. 1861, p. 12 ; Monogr. vi, p. 23 -, viii, 27 CROSSE, J. de 



C., 1864, p. 142 (first reference only, exclusive of synomymy and 

 remarks) Placostyhis stntchburyi Pfr., KOBELT, Conchy). Cab. p. 

 135, pi. 32, f. 8 (copy from Pfeiffer). 



Pfeiffer's description is translated above, and his figure copied on 

 pi. 36, fig. 35. The specimens before me are somewhat smaller than 

 the type: 



Alt. 48^, diam. 22^, longest axis of aperture with peristome 29^ mill. 



Alt. 46-^, diam. 22^, longest axis of aperture with peristome 30 mill. 



Alt. 52, diam. 24, longest axis of aperture with peristome 30 mill. 



Alt. 50, diam. 22, longest axis of aperture with peristome 30 mill. 



The lip is white or faintly brown-tinted. In one old specimen 

 (fig. 36) the lip is thickened within, much as in P. macyiUivrayi, 

 but there is no such callous on the columella as in that species. 

 Three out of five specimens have a small nodule on the parietal wall 

 above the columellar fold. 2^ or 2| nepionic whorls have the usual 

 pitted sculpture, and in some the first whorl has been self-amputated. 

 The sculpture is a combination of moderate growth wrinkles or some- 



