THE FRESHWATER MOLLUSCA OF VICTORIA 123 
Observations. — The National Museum, Melbourne, has fine 
examples of this species from Clarence River, New South 
Wales, the type locality. The Victorian record is based on a 
series from the cabinet of the late Mr. W. H. Dillon, and 
although the whorls are a little rounder than those of water- 
hoiisei from the type locality, these shells are otherwise 
indistinguishable. Clessin remarks that specimens collected 
by Waterhouse are in the Berlin Museum under the name of 
olivaceus, an unpublished appellation by Cox ; this name was 
not available, being preoccupied by Spix. 
Genus SEGMENTINA Fleming 1838. 
Segmentina victoriae Smith. 
(PI. Ill, Figs. 30, 30a, 30b). 
1882 Segmentina victoriae Smith, Journ. Linn. Soc. Lond., Zool., xvi, 
p. 296, pi. 7, figs. 11-13. 
1894 Planorbis victoriae (Smith). Whan, Geelong Nat., iv. No. 10, p. 9. 
1896 Id. Fielder, Viet. Nat., xii. No. 11, p. 140. 
1920 Segmentina victoriae Smith. Ma)', Pr. Roy. Soc. Tas., p. 70. 
1921 Id. May, Check-list Moll. Tas., p. 90, No. 886. 
1923 Id. May, 111. Index Tas. Shells, pi. 41, fig. 20. 
1932 Id. Cotton and Godfrey, S. Aust. Nat., xiii, p. 163, pi. 3, fig. 13. 
1936 Id. Cotton, S. Aust. Nat., xvii. Nos. 1-4, p. 85, fig. 45. 
Size of Type. — Greatest diam., 4 mm,; smallest diam., 3 5 
nun.; height, 13 mm. 
Localities. — ^Melbourne Botanic Gardens, Studley Park 
(Nat. Mus., Melb.) ; Heidelberg (Fielder) ; Meredith (J. H. 
Young) ; Birregurra (A. C. Nilson) ; Lake Wendouree (J. 
Searle) ; Melbourne University Lake (J. A. Kershaw) ; Sale 
(W. Kershaw). 
Vernacular Name. — The Victorian Segmentina. 
Observations. — A thin, glossy, chestnut, disc-like shell, 
rather acutely keeled a little below the middle of the last 
whorl. It resembles 8 . australiensis Smith from Penrith, 
New South Wales, but is not so flattened beneath, the sunken 
spire is smaller, and the umbilicus narrower ; internal lamel- 
lae absent. Smith remarks: “It appears inconsistent to 
place a shell in the genus Segmentina lacking the essential 
character of internal lamellae. However, its Hout-ensembW 
is so Segmentinoid, that I feel sure that it is an abnormal 
form of that group.” 
This species frequents stagnant water and slow-running 
streams. 
