332 Proceedings of the Royal Society of Victoria. 



threads are distinctly strong-er than the rest, the others being 

 much finer and even then not of equal strength. In the coarser 

 form the beads of the spiral threads tend to become spiny den- 

 ticles when examined under a lens. A fairly strong thread 

 usually forms a keel at the base ; the base is flat and carries 

 about twelve unequal very finely granulose spiral threads. Aper- 

 ture quadrate, pearly within, outer lip thin, sharp, and finely 

 crenulate in conformity \\4th the spiral threads. Columella 

 slightly twisted, giving rise at the anterior end to a tooth-like 

 projection. Anterior of the aperture somewhat profuse at the 

 columella side. 



Dimensions. — Height, 15 to 17.5 mm. ; breadth, 9.5 to 

 12 mm. ; height of aperture, -3.5 to 5 mm. ; breadth of aperture, 

 5 to 6 mm. Also 12 mm. in length by 8.5 mm. in breadth and 

 10.5 by 7, 9 by 7, 7 by 5, and 6 by 4 for the same relative mea- 

 surements in smaller specimens. 



Locality. — Lower beds of Muddy Creek, near Hamilton, 

 Western Victoria ; clays of the Old Cement Works, Balcombe's 

 Bay, Mornington. — Balcombian. — Eocene. 



Astele millegranosa, sp. nov. (PI. XTX., Figs. 7, 8). 



Description. — Shell trochiform, rather thin and fra^le, com- 

 posed of eight or nine spire-whorls and about one and a half 

 smooth embryonic whorls. 



Spire-whorls usually flattened, but occasionally slightly con- 

 cave in the earlier portion of the spire, in which case the aspect 

 of the shell is somewhat altered in the direction of giving a 

 broader and more squat form. Spire-whorls bearing fine spiral 

 threads increasing from about three to eleven or twelve on the 

 body-whorl, the basal thread of each whorl being the strongest, 

 forms a well-marked girdle, the remaining threads varying in 

 strength ; each thread is furnished with a fine beaded ornament, 

 the size of the beads varying with the strength of the threads, 

 the interspaces between the threads bearing fine oblique striae of 

 growth. The ornament on the earlier spire-whorls is beautifully 

 fine, and has a distinctly olathrate appearance owing to tlie 

 spiral threads being crossed transversely by slightly oblique 

 striae, with only slight noding for the first three or four whorls ; 

 then the noding strengthens and develops into beads, and finally 



