H. LTRATA, Cox. PL 4, figs. 26, 27. 



Widely, perspectively umbilicated, plano-discoidal, regularly 

 strongly costate, chestnut corneous ; whorls 3^, the last rounded, 

 spire subinimersed, suture profoundly impressed. Diam. 3 mill. 



Sydney, Australia. 

 H. STROUDENSIS, Cox. PL 4, figs. 28, 29. 



Widely umbilicated, discoidal, thinly costulately striate, con- 

 vex, suture impressed, brownish; whorls 5, spire truncate. 

 Diam. 3 mill. Stroud, Port Stephens, Australia. 



H!. PEXA, Cox. PL 4, figs. 30, 31. 



Widely umbilicated, almost discoidal, thin, translucent, regu- 

 larly, closely, arcuately costate, cosUe appearing as though in 

 pairs, light yellowish corneous, spire plane, suture moderate ; 

 whorls 4, convex, the last narrow, rounded. Diam. 2 mill. 



Greystanes, N. So. Wales. 

 H. COCHLIDIUM, Cox. PI 4, figs. 32, 33. 



Umbilicus wide, scarcely narrower at the bottom, shell thin, 

 translucent, dull vitreous, with numerous thin, elevated, curved 

 riblets, the interstices lightly, very minutely granulate and 

 lineate ; white ; whorls 4^, convex, spire plane, last whorl narrow, 

 rounded, a little inflated and plicate below. Diam. 2*25 mill. 



Clarence River, Australia. 



More strongly sculptured than H. pexa. 



H. BELLI, Cox. PL 4, fig. 36. 



Widely and perspectively umbilicated, discoidal, depressed 

 and subconcave, regularly costellate, reddish chestnut color, a 

 little shining ; whorls 5, somewhat convex, the last tumid, suture 

 deeply impressed. Diam. 1-75 mill. 



Sydney, Australia. 

 H. COLLIST, Brazier. PL 5, figs. 79, 80. 



Widely umbilicated, shining, yellowish corneous, lightly 

 striate above, smooth below, suture strong impressed ; whorls 

 5, regularly increasing, convex, narrow, the last a little descend- 

 ing, excavated around the umbilicus. Diam. 1'75 mill. 



Mt. Wellington, Tasmania. 



Described as H. minima, Cox, preoccupied by H. Adams for 

 a Mauritian species. 



