GIBBULA. 237 



few angular radiating maculations of blackish-brown ; spire very 

 short ; sutures impressed ; whorls about 4, convex, rounded, all over 

 finely regularly spirally lirulate ; last whorl rounded at the periphery, 

 or very bluntly subangular, convex beneath, impressed around the 

 umbilicus ; aperture quite oblique, rounded-ovate, angular above, 

 broadly rounded below, with a thin iridescent layer of nacre within ; 

 outer, basal and columellar margins rather thin, curved, the latter 

 joined to the upper margin by a thin white parietal callous; 

 umbilicus not bounded by an angle, narrow. 

 Alt. 5, diam. 51 ; alt. 6, diam. 5J mill. 



Brown River, Tasmania. 



G. tasmanica PETTERD, Quart. Journ. Conch. (Leeds) ii, J). 103 

 (1877). 



This dull whitish little shell may be known by its finely striate 

 surface, narrow umbilicus, short spire and globose-turbinate form. 



G. AUKEA Tension-Woods. 



Shell small, turbinately conical, scarcely umbilicate, yellowish- 

 white, painted very prettily with reddish gold spots; whorls 4, 

 margined at the base, and flattened, rounded above and constricted 

 at the sutures ; girded by irregular obliquely striate very fine stride ; 

 margin elegantly tessellated with white and reddish gold ; base 

 sculptured with impressed tessellated lines ; aperture rounded. Very 

 nacreous underneath. Alt. 5, diam. 4 mill. (Tension-Woods.) 



Kings Island, Tasmania. 



G. aurea T.- WOODS, Proc. Roy. Soc. Tasm. 1875, p. 153 (1876.) 

 The Academy received shells under this name from Mr. Beddome, 

 (PI. 40, fig. 17) but I am not at all sure that they really represent 

 Mr. Tension-Woods' species. 



G. OCHOTENSIS (Middendorf) Philippi. PI. 60, figs. 3, 4. 



Shell globose-coiioidal, narrowly umbilicate, closely transversely 

 sulcate, blackish ; whorls convex, the last subangulate ; base convex, 

 rounded toward the umbilicus; spiral lines about 11 on the penult- 

 imate, 30 on the last whorl; aperture rhombic-orbicular; columella 

 oblique, sub-excavated above, rounded; beautifully nacreous, green- 

 ish. (P7n7.) 



The shell is orbicular-conical, consisting of 5 regularly convex 

 whorls, the last indistinctly angular at the periphery, convex beneath, 

 and notably convex near the umbilicus. Umbilicus very narrow, 

 and while it perforates to the apex, one can hardly get the finest 



