GASTROCOPTA, AUSTRALIA. 161 



shallow; aperture squarely oval, having 5 teeth (plicae), 1 

 large and unequally divided, situated in the centre of the 

 last whorl, with the points separated, a 2nd sharp and 

 pointed, opposite to the first bifid tooth, and a 3rd and a 4th 

 on the columellar side between the 1st and 2nd, the one near- 

 est the columella being thick and blunt, almost a rounded 

 projection, the other is short and sharp ; a 5th, situated be- 

 tween the first two, inserted near the junction of the peri- 

 stome with the body whorl, is short and thick at the base ; 

 peristome thickened, dilated and reflected, smooth and white, 

 as also are the teeth, margins joined by a broad thick callus, 

 forming the peristome a continuous circle. Diameter 0.06, 

 length 0.13 of an inch" (Cox). 



South Australia : Wallaroo (Masters). 



Pupa margareta: Cox, Monograph of Australian Land 

 Shells, 1868, p. 80, pi. 14, f. 20, 20a. 



Said by Cox to be in the Australian Museum (1868), but 

 no specimens are now known to be extant, and Mr. Hedley 

 puts it among the lost species. So far as I know, nothing ad- 

 ditional to Cox's account has been published in fifty years. 

 The description and figures offer no definite differences from 

 G. pediculus (rossiteri) unless in the size --it is said to be 

 3.25 mm. long. 



98. GASTROCOPTA MORETONENSIS (Cox). PI. 26, figs. 12, 13. 



"Shell small, dextral, subperforate, ovate, faintly obliquely 

 striated, yellowish horny, apex obtuse ; whorls 4!/2> rounded, 

 the last equalling more than half the length of the shell ; 

 suture deep and broad; aperture squarely oval, longer than 

 broad, having four teeth (plica), one large and bifid, placed 

 closely together, each pointed, the points divergent, situated 

 in the center of the aperture on the body-whorl ; a second, 

 longer and thicker, directly opposite to the bifid one ; a third 

 near the columella midway between the other two, short and 

 pointed, thickened at and about its base ; a fourth less prom- 

 inent, and directly opposite to the last, the whole dividing the 

 aperture into four equal parts ; peristome thickened, broadly 

 and irregularly expanded, smooth and white, as also are the 



