236 GIBBULA. 



G. AMIRANTIUM Smith. PI. 67, figs. 65, 66. 



Shell small, subglobose, perforate, spirally finely lirate and sul- 

 cate, white, the lirse being interruptedly pink ; whorls 4-5, convex, 

 rapidly increasing; last whorl rounded at the periphery, lirate 

 throughout, the lirse rather narrower than the intervening grooves 

 and crossed by the lines of growth. Aperture circular, occupying 

 more than half the total height of the shell. Columella arcuate, 

 white, covered with a callous, which is considerably reflexed, 

 especially at the lower part. Alt. 4, diam. 4i mill. (Smith.) 



Etoile Island, Amir antes, 13 fms. 



Trochus ( Gibbula ?*} amirantium E. A. SMITH, Zool. ' Alert ' p. 

 504, t. 44, f. v. 



The distinguishing feature of this little species is the reflexed 

 character of the columella. (Smith.') 



G. WELDII Tension- Woods. 



Shell small, depressed-turbinate, carinated, rather widely umbil- 

 icate, solid, shining, whitish, elegantly ornamented with slender 

 oblique lines and brown spots ; whorls 5, quadrate, carinated above 

 and below, the carinse rounded, elevated, conspicuously spotted with 

 fulvous ; all over (except the carinse and the space between them on 

 the last whorl) lirate ; apex obtuse ; base flat, striate, with radiating 

 rose colored lines ; aperture rounded, peristome continuous, thick- 

 ened ; columella arcuate, conspicuous ; umbilicus margined, margin 

 white, within marked with spiral equal lirse. 



Long. 7, lat. 6, alt. 6 mill. (Tension- Woods.) 



Bass' Straits. 



A small depressedly turbinate shell, white, shining and porce- 

 lanous, keeled and lirate throughout except on the keels and on the 

 last whorl between them. It is prettily marked with brown spots 

 on the keels and fine diagonal lines of the same color on the whorls ; 

 on the base which is lirate it is radiately marked with fine rose lines. 

 The umbilicus is white margined and spirally lirate. Rare. This 

 shell may turn out to be G. porcellana A. Ad., but I had no speci- 

 men of the latter for comparison. (Tension- Woods.*) 



G. weldii T.-WOODS, Proc. Roy. Soc. Tasm. 1876, p. 143 (1877.) 



G. TASMANICA Petterd. PL 40, fig. 20. 



Shell small, perforate, globose-turbinate, rather thin, lusterless, 

 whitish, tinged with yellow or greenish, unicolored or marked with a 



