2 /. H. Gatliff: 



increasing in size, which are crossed by numerous erect rihs, 

 numbering about sixteen on the penultimate whorl, with many 

 equidistant spiral threads, causing aculeations where they cross 

 the ribs. White. Suture impressed. Sliglitly umbilicated. 

 Aperture circular. 



Dimensions of Type. — Length, 1.5 mm.; breadth, .85 mm. 



Locality. — Found in shell sand. Ocean Beach, Point Nepean. 



Observations. -- This small shell in IVn-m recalls S. lyrata, 

 Sowerby. 



Type in my collection. 



Scala translucida, sp. now (PI. I., Figs. 3 and 4). 



Sliell small, fairly solid, of eight convex whorls, apex l)lunt and 

 rounded, protoconch of about one-and-a-half smooth whorls, ribs 

 crossing the whorls are then gradually developed, on the pen- 

 ultimate whorl they number fifteen, and are strong and rounded ; 

 one or more of these is stouter than the others on the later 

 whorls, probably marking stages of growth ; the space between 

 the ribs is densely spirally striate ; the ribs do not extend across 

 the whole of the body whorl, the base from the junction of the 

 lip on the columella round to the centre of the outer lip being 

 smooth, with the exception of a sliglit ridge crossing it and being 

 a continuation of the stout ril) ; suture well-defined, aperture 

 circular, lip thickened. 



White, semi-translucent, with two very pale brown spots, one 

 on the upper portion of the first rib, and the other on the 

 eleventh rib. 



Dimensions of Type. — Length, 5 ram.; breadth, 2 mm. 



Locality. ^Found in shell sand at Portsea, Port Phillip. 



Observations. — The shell most closely approaching this hitherto 

 recorded from our shores is 8. (Acrilla) minutula, Tate and May. 

 Mr. Hedley kindly compared it with 8. morchi, Angas, and 

 states that it is not that species. Sixteen other specimens were 

 obtained immature. The type is .somewhat worn, and a living 

 shell might show the spiral striation on the ribs. 



Type in my collection. 



