PLACOSTYLUS, NEW CALEDONIA. 55 



Bulimus goroensis Souv., J. de C., 1870, p. 76. GASSIES, Faune, 

 ii, p. 76, pi. 4, f. 3, 1871. PFR., Monogr. viii, p. 120 Placostylus 

 goroensis KOBELT, t. c., p. 103, pi. 25, f. 1, 2. CROSSE, J. de C., 

 1894, p. 266. 



Differs from P. souvillei chiefly in the peculiar coloration, heavy 

 lip and strong parietal tubercle. 



Group of P. porphyrostomus. 

 P. SUBMARIEI (Souverbie). PI. 26, figs. 19, 20, 21. 



Shell imperforate, short-ovate, very solid, brownish under a yel- 

 lowish-chestnut cuticle, which is streaked with chestnut and some- 

 times spirally lineolate. Aperture flesh-tinted inside, shaped like 

 that of P. mariei, except that at the base of the columella there is a 

 deep, rounded sinus, abruptly truncating the calloused outer lip ; often 

 having some acute denticulation below the columellar fold. 



Length 59, diam. 36 mill. 



Length 63-64, diam. 37-39 mill. 



Bonde, New Caledonia (Lambert). 



Bulimus subm.ariei Souv., Journ. de Conchyl., 1869, p. 273, with 

 var. abbreviata; 1870, p. 76, pi. 9, f. 2 PFR., Monogr. viii, p. 119. 

 GASSIES, Faune ii, p. 80, pi. 5, f. 2 (not typical). Placostylus 

 submariei KOBELT, t. c., p. 115, pi. 28, f. 2-4. 



Shorter than P. mariei, from which it differs in the remarkable 

 channel cut through the basal lip at the base of the columella. The 

 "variety abbreviata " includes shorter specimens, length 51, diam. 

 37 mill. 



P. MARIEI (Crosse & Fischer). PI. 26, figs. 22, 23, 24. 



Shell rimate, ovate, extremely solid and thick ; whitish under a 

 chestnut or yellowish-chestnut cuticle, which is obscurely streaked 

 with darker, and in the typical color-form is multilineate spirally 

 with brown. Surface nearly smooth, marked with slight growth- 

 wrinkles. Spire conic, short. Whorls 5|, but slightly convex, the 

 last usually somewhat compressed from front to back, rather swollen. 

 Aperture vertical, its longest axis oblique, narrow and contracted, 

 pure white or pale brownish within ; peristome white, flesh-tinted or 

 edged with yellowish -brown, excessively thickened and built forward, 

 the outer lip extremely wide at the upper insertion, then excavated to 

 form a rounded sinus, below which it gradually thickens to the base,, 



