76 PLACOSTYLUS, NEW GUINEA. 



Aperture nearly vertical, ovate, white and obscurely zoned within; 

 peristome somewhat thickened, rose-bordered, a little reflexed, the 

 outer margin a little reflexed at first, then curved ; columellar mar- 

 gin dilated, thickened, covering the umbilicus. Alt. 36-38, diam. 

 16-17 mill. (Mub.). 



New Hebrides : Santo Island (Dr. Francois). 



Placostyhis (Charts) hebridarum MAB., Soc. d' Hist. Nat. d' Autun, 

 viii e Bulletin, 1895, p. 410, no. 90. 



Seems to have the color-pattern of P. turneri. 



SPECIES OF EASTERN NEW GUINEA. 



P. REMOTUS Hedley. Pi. 11, fig* 9. 



Shell an elongated cone, narrow in proportion to length, thick and 

 strong, anteriorly broad and blunt, posteriorly tapering slowly; 

 scarcely perforate. Color pale ochre with a darker broad peripheral 

 band, which is edged above and below with a pale border, and a 

 narrow, dull white margin below the suture. Whorls 6, rounded ; 

 apex blunt, nepionic shell a whorl and a half. Suture impressed. 

 Sculpture : everywhere irregularly crossed by oblique growth lines, 

 both fine and coarse, which interrupt and distort a series of minute, 

 numerous, irregular spiral scratches which are not to be perceived 

 without a lens (see detail fig. 9). Aperture oblique, rudely hex- 

 agonal, subchannelled anteriorly. Columella thickened, externally 

 folded over a narrow umbilical chink, internally sharply bent, the 

 upper limb a flat, deeply entering and obliquely ascending plate, the 

 lower swelling into a slight but distinct tubercle. Outer lip inter- 

 nally much thickened, but neither thickened nor reflected externally, 

 forming a sharp angle at the insertion. A thin callus is spread on 

 the body whorl. In the specimen described, the anterior corner of 

 the aperture is externally surrounded by a series of imbricating 

 lamellae ; this may, however, be an individual feature or repair 

 of breakage. Length 26, breadth 12 mill. (Hedley^. 



British New Guinea: the Mambara Goldfield (Coll. Dr. J. C. Cox). 



Phtcostyhis remotus HEDLEY, Proc. Linn. Soc. N.-S. Wales (2), 

 xxiii, p. 97 (May 25, 1898). 



" It is the smallest known Placostyhis, and is remarkable besides 

 for its narrow shape, blunt anterior extremity and peculiar aperture." 

 The single specimen was found by Dr. Cox in the aperture of a large 

 Rhysota hercules, in a collection of land shells purchased from a digger 

 returned from New Guinea. 



