44 PLACOSTYLUS, NEW CALEDONIA. 



Var. IMBRICATUS Gassies, 1871. (pi. 21, fig. 47). Shell perfor- 

 ate, obese-ovate, ventricose with conic spire ; surface coarsely and 

 deeply plicatulate longitudinally, the wrinkles cut by fine, deeply en- 

 graved spiral lines. Earlier whorls yellowish, the last covered with 

 a rather thin yellow cuticle streaked with brown, a subsutural band 

 white. Aperture wide, red-orange within, paler in the throat, the 

 lip whitish, thickened, sinuous above ; columella wide, with a fold 

 above, a small projection at its junction with the basal lip. Parietal 

 callus bearing a moderate tubercle. Length 78-80, diam. 40, 

 length of aperture 42 mill. ; or smaller, length 69, diam. 40 mill. 



Boulari Bay (Lambert). 



The specimen before me is more strongly decussated than the type 

 figure shows. 



Var. LALANNEI Gassies. Imperforate or rimate, fusiform, acumi- 

 nate, solid, longitudinally and transversely streaked, obliquely mal- 

 leated, reticulate ; white under a buff-brown, olivaceous epidermis, 

 ornamented with obliquely longitudinal brown stripes and blackish 

 transverse narrow lines ; apex buff, punctate, shining ; spire conic, 

 ovate-elongate, suture impressed, denticulate, with a buff or white 

 hair-margin. Whorls 7-8, a little convex, the last two-thirds the 

 total alt. ; aperture ear-shaped, long, angular above, rounded below, 

 narrow in adults; columella very thick, strongly reflexed over the 

 .umbilicus, rather flattened, with a long ascending and entering 

 fleshy-rose-colored fold ; parietal fold conic, subhorizontal, reddish ; 

 peristome thickened, reflexed, whitish rose, the outer lip sinuous 

 above, expanded at the base ; the margins joined by a moderate rose- 

 white callus ; interior orange-scarlet, pearly. Length 87 to 100, 

 diam. 45, length of aperture 54, width 18 mill. (Gassies). 



Boulari, quite abundant. 



A var. minor, length 80, diam. 33, apert. 37 mill., has the peri- 

 stome white. 



Gassies seems to think that this may be one of the varieties of B. 

 fibratas, and he points out no distinguishing characters. 



Var. GRAMMICUS Crosse. Large, elongate, pale chestnut, ob- 

 scurely painted with brown, sub-undulating, close, transverse, narrow 

 bands ; suture whitish. Whorls 7^, the first 4J roseate, destitute of 

 cuticle, the last whorl slightly ascending, as long as the spire. Ap- 

 erture pale orange, becoming buff-whitish in the throat ; peristome 

 pale orange-ivory tinted, the margins joined by a thick callus bear- 



