BY C. HEDLEY. 107 



by the lateral canal, peristome thickened slightly and reflected. 

 Length 8, breadth 6 mm. 



Type in Queensland Museum. 



Hab. — Mita, Milne Bay (Hedley) ; six specimens, under logs 

 in dense jungle on hillsides; rare. 



90. P. gibba, n.sp. 



(Plate xii., fig. 38.) 



Shell minute, oblong, smooth and extremely glossy ; colour 

 pale corneous ; whorls 5, last convex, rather flattened below the 

 suture, penultimate gibbose, tumid ; spire J of total length ; apex 

 obtuse ; suture margined by a callus, impressed ; aperture sub- 

 vertical, circular, anterior canal distinct, lateral, a narrow cleft 

 across the peristome developing outside the lip, a circular orifice, 

 parietal lamella obscure, peristome slightly thickened and 

 reflected. Length 4 ; breadth 2 mm. 



Type in Queensland Museum. 



Hab. — Mission Hill, Ngauauni, Upper St. Joseph River 

 (Hedley) ; four specimens under logs in jungle upon the hillside. 



91. DlPLOMMATINA SYMMETRICA, n.sp. 



(Plate xii., fig. 39.) 



Shell dextral, rimate, elongate, ovate, turreted, thin, trans- 

 lucent; colour reddish-corneous; whorls 7, rounded, increasing 

 regularly as far as the antepenultimate, which equals its successor 

 in breadth ; sculpture, closely obliquely ribbed by thin white erect 

 lamellse, not continuous, projecting at the shoulder, minutely 

 spirally striated between the ribs ; suture deeply impressed ; apex 

 obtuse; aperture subvertical, circular, columellar margin straight, 

 bearing a moderate-sized internal tubercle, peristome double, 

 greatly expanded round its entire margin, forming a broad callus 

 upon the penultimate whorl. Alt. 3-^, breadth ljmm. 



Type in Queensland Museum. 



