52 PLACOSTYLUS, NEW CALEDOJJIA. 



streaks may be distinguished. The peristome is orange excepting 

 the columellar fold and the basal and outer margins, which are ivory 

 white. The aperture is of a fine fire color, shading toward orange. 

 Length 88-95, diam. 47-56 mill.; aperture with peristome 54-61 

 mill, long." (Crosse.) 



Gatope and the " model farm," New Caledonia (Marie). 



? Var. confusus Pilsbry. (PI. 21, fig. 48.) Shell imperforate, 

 solid, roughly striate, malleated throughout, the impressions some- 

 times in spirals; reddish, covered with an adherent greenish-brown 

 cuticle more or less banded spirally. Last whorl slightly or hardly 

 compressed, ascending in front. Aperture dark brown within; peri- 

 stome white, unexpanded, lightly thickened, the margins joined by 

 a thin, translucent callus ; columella with an obsolete compressed 

 white fold. Alt. 80, diam. 43, greatest length of aperture 45 mill. 

 Moindu, on the west coast of New Caledonia (Layard). 



This is P. cicatricosus of Kobelt's monograph (p. 90). Possibly 

 Gassies' figure pertains to the same form, but his description applies 

 unquestionably to P. kanalensis. It differs from P. guestieri chiefly 

 in being banded and more malleated. 



? Var. orientalis Kobelt. (PI. 21, figs. 49, 50.) Larger, thicker, 

 the lin more thickened, lightly sinused above, the columellar fold 

 stronger; bands more decided. Length 87, diam. 45, aperture 56 

 mill. Huaila on the east coast (Layard). 



?Var. rhinocheti Kobelt. (PI. 21, fig. 46). SUell imperforate, 

 compressed, angular along the two sides, solid, roughly and irregularly 

 striate, covered with somewhat oblique, irregular and not very dis- 

 tinct transverse wrinkles ; epidermis chestnut-brown. Whorls 6-|, 

 the last one flattened below the suture and then inflated, slightly as- 

 cendin< T in front. Aperture orange-brown within, white-margined ; 

 peristome unexpanded, thickened, a little expanded at the base, whit- 

 ish, the terminations joined by a rather diffused, toothless callus; the 

 outer margin angular and sinuated above, then straight, produced in 

 the middle; columella subvertical, with an oblique, obsolete fold. 

 Alt. 80, diam. 44, length of aperture with peristome 47 mill. 



Kanala (Rossiter). 



Placed by Kobelt in the group P. bavayi, by Crosse under P. cicat- 

 ricosus Kob. as a variety. The toothless parietal wall and strong 

 spiral sculpture are its chief differential characters. 



