134 
THE FRESHWATER MOLLUSCA OF VICTORIA 
1932 Protohyridella glenelgensis (Dennant). Cotton and Gabriel, Pr. 
Roy. Soc. Viet,, xliv (n.s.), Pt. 2, p. 160, pi. 16, fig. 9. 
1934 Id. Iredale, Aust. Zool., viii, Pt. 1, p. 74, pi. 5, %. 14; pi. 6, fig. 14. 
1934 Hyridella (Protohyridella) glenelgensis (Dennant). Thiele, Hdbch. 
Syst. Weichtierkunde, p. 838. 
Size of Type. — ^Lengtli, 23 nun. ; breadth, 40 nun. 
Localities . — Gllenelg Eiver, at Roseneath (Nat. Mus., 
Melb., Type and Rev. W. Whan) ; Glenelg River, at Dart- 
moor (J. Dennant and W. H. Dillon) ; Wannon Creek, 
Hamilton (Nat. Mus., Melb.). 
Vernacular Name . — The Glenelg River Corrugated Mussel. 
Observations . — small species apparently confined to 
Victoria. The surface of shell is rough and has two series 
of ornamentations, one consisting of undulating concentric 
ridges, a few of which are coarsely crenulated, and the other 
of five or six rows of irregular, prominent, nodose wrinkles, 
angularly arranged around the umbo and with deeply-cut 
interspaces. The latter series of markings is oblique to the 
former and constitutes a characteristic rib-like ornament. 
This peculiar sculpturing, which occupies the greater portion 
of the shell, readily distinguishes it from other Australian 
freshwater mussels. 
This species is the genotype of Protohyridella. 
Index of Generic and Specific Names Applied to Victorian 
Freshwater Mollhsca. 
acutispira (Ameria) 114, 115 
acutispira (BuKnus), 114 
acutispira (BuUimis), 114 
acutispira ( Physa ), 114 
adamsiana (Physa), 117 
aliciae (Ameria), 110 
aliciae (Bulmus), 110 
aliciae ( Bullinus) ,110 
aliciae (Glypto physa), 110 
aliciae (Physa), llO 
ambigua (Hyridella) , 130 
Ameria, 100, 101, 110, 111, 112, 
113, 114, 115, 116 
Amnicola, 105 
Amphipeplea, 107, 109 
Amphipiplea, 108, 109 
Amplexa, 101, 110 
Ancylus, 100, 124, 125, 126 
angasi (Centralhyria) , 131 
angasi (Corbicula), 126, 127 
angasi (Cyrena), 126 
angasi (Hydrobia), 105, 106 
angasi (Hyridella) , 130, 131 
angasi (Unio), 131 
angulata (Vivipara) , 103 
Aplexa, 110, 113, 115, 119 
arachnoidea (Ameria), 113 
araclinoidea (Aplexa), 113 
arachnoidea (Physa), 113 
arachnoideus {Bullinus), 113 
assiniilis (Ancylus), 125 
attenuata (Physa), 113, 117 
australiana (Physa), 114 
australicus (Ancylus), 124, 125 
australiensis (Segmentina) , 123 
australis (Diplodon) , 130 
australis (Hyridella) , 102, 129 
australis (Hyridunio), 130 
australis (Unio), 129 
badia (Physa), 112 
balonnensis (Melania), 102 
balonnensis (Unio), 129 
balonnensis (Velesunio), 130 
beddomei (Gundlachia) , 125 
