158 GASTROCOPTA, AUSTRALIA. 



is short and horizontal (pi. 26, fig. 5). The basal fold is ex- 

 actly at the junction of columellar and basal borders, almost 

 subcolumellar in position; and sometimes there is a minute 

 denticle (infrapalatal) near it, in the base, but this is present 

 in but few of the specimens examined. The rather short lower 

 palatal plica has the usual form of an entering fold. The 

 upper palatal is shorter, and descends inward, therefore ap- 

 pearing wide or flat-topped in a front view in the Narrabri 

 specimens; in the typical form from Sydney it is small and 

 tubercular. An extremely small or vestigeal suprapalatal 

 may be seen in most individuals. Some individuals might be 

 considered 5-, others 8-toothed, depending upon whether the 

 angulo-parietal be counted as one or two teeth, and whether 

 the infra- and supra-palatal plicae are sufficiently developed 

 or obsolete. 



Length 3.4, diam. above aperture 1.35 mm. ; 5% whorls. 



Length 2.95, diam. above aperture 1.4 mm. ; nearly 5 whorls. 



95. GASTROCOPTA PEDICULUS (Shuttle worth). PL 26, fig. 1. 



See p. 145. Along the coastal slope of New South Wales, 

 from Picton about 200 miles northward, but not over the 

 watershed westward, so far as known, this species occurs in a 

 form scarcely, if at all, different from the typical Polynesian 

 examples, though the largest specimens slightly surpass those 

 of Polynesia. It has been known as Pupa rossiteri Brazier. 



Specimens collected by Mr. Brazier and labeled by his own 

 hand are before me, received through Mr. Hedley. They are 

 from the Rose Bay side of Point Piper, Port Jackson, taken 

 under decaying leaves at the roots of Lantana by Mr. Brazier 

 in 1865 (pi. 26, fig. 1). Besides being dextral, it differs from 

 the closely allied O. strangei in some small details of the teeth. 

 The angular lamella is relatively lower, the parietal more 

 salient. In a basal view these lamellae are arranged very much 

 as in strangei. The columellar lamella is stout, short and 

 horizontal. The basal fold is almost subcolumellar in position. 

 Lower palatal plica is lengthened, the upper tuberculiform. 



Length 2.85, diam. 1.3 mm.; fully 5 whorls. 



It appears to me likely that this species was imported into 



