114 
THE FRESHWATER MOLLUSCA OF VICTORIA 
Observations. — Four specimens from near Melbourne in 
the National Museum, Melbourne, constitute the types. One 
of these is figured by Hedley, who remarks : “It is a compara- 
tively small and slender form. Even among the type lot there 
is a difference in sculpture; all have fine dense radial hair 
lines, on one no spiral sculpture is perceptible, on another 
there are spiral lines of rather distant ciliae, which corres- 
pond to spiral lines on the bare shell.” 
Ameria tenuistriata (Sowerby) var. conftuens (Hedley). 
(PI. II, Fig. 16.) 
1917 Bullinus tenuistriatus var. confluens Hedley, Rec. Aust. Mus., xii, 
No. 1, p. 4, pi. 1, figs. 9, 10. 
Size of Type. — Length, 21 mm. ; breadth, 12 mm. 
Localities. — Echuca (Type) and Gunbower (Cox coll.) ; 
Lake Hattah (J. E. Dixon). 
Vernacular Name. — The Echuca Thinly-striated Pond- 
bnail. 
Observations. — A large and thin, narrowly umbilicate 
variety, with short spire and concave outline. Hedley 
remarks: “this form makes a nearer approach to Physa 
australiana Conrad, than to any other figured species. But 
that is shown with the anterior lip contracted to a gutter and 
with a more gibbous shoulder. Conrad’s species is 18 mm. 
long and comes from the Bogan River, New South Wales. 
Probably the type of it is still preserved in the Museum at 
Logan Square, Philadelphia.” 
Ameria acutispira (Tryon). 
PI. II, Pig. 17. 
1866 Physa (Bulinus) acutispira Tryon, Am. Journ. Conch., ii, p. 9, pi. 2, 
fig. 10. 
1882 P. acutispira Tryon. Tate and Brazier, Pr. Linn. Soc. N.S.W. vi 
p. 557. 
1882 P. (Bulinus) acutispira Tryon. Smith, Joum. Linn. Soc. Lond , 
100 C T> P- P^- Tryon). 
1885 P. acutispira Tryon. Clessin, Conch. Cab., i, Abth. 17, p. 242 
pi. 34, fig. 1. 
1917 Bullinus acutispira (Tryon). Hedley, Rec. Aust. Mus., xii, No. 1 
p. 5, pi. 1, figs. 11, 12, 13 (varieties). 
1919 Bullinus acutispira (Tryon). Chapman, Pr. Roy. Soc. Viet, xxxii 
(n.s.), p. 26, pi. 3, fig. 4. 
Size of Type.— Length, 12 mm. ; breadth, 6 mm. 
Localities.— Mordialloc Creek, Muddy Creek, Bunyip 
River, Oakleigh, Eltham, Lai Lai Palls, Inverloch, Narracan 
