THE FRESHWATER MOLLUSCA OF VICTORIA 
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colour. The epidermis is ornamented with regular transverse 
rows of short hairs. Generally known under the name inflata 
which, through preoccupation, is not available. 
Isidorella neivconibi (Adams and Angas) var. pilosa (Tenison 
Woods). 
(PI. II, Fig. 24). 
1878 Physa pilosa Ten. Woods, Tr. Roy. Soc. Viet., xiv, p. 63. 
1882 Id. Tate and Brazier, Pr. Linn. Soc. N.S.W., vi, p. 556. 
1882 Id. Smith, Journ, Linn. Soc. Lond., Zool., xvi, p. 289. 
1885 Id. Clessin, Conch. Cab., i, Abth. 17, p. 358. 
1917 Isodora hainesii (Tryon) var. pilosa (Ten. Woods). Hedley, Rec. 
Aust. Mus., xii. No. 1, p. 7, pi. 2, figs. 19, 20. 
Size of Type. — Length, 11 mm.; breadth, 6 mm. 
Localities. — Melbourne University Ponds (Types, Nat. 
Mus., Melb.) ; Melbourne (J. A. Kershaw) ; Birregurra 
(A. C. Nilson) ; Elaine (J. II. Young) ; Meredith (E. H. 
Matthews) . 
Vernacular Name. — Newcomb’s Hairy Pond-Snail. 
Observations. — In the National Museum, Melbourne, are 
four specimens of P. pilosa Ten. Woods labelled as the types 
and registered as 35994-7. One of them, 13 mm. long and 
8 mm. broad, is illustrated by Hedley. This figure excel- 
lently depicts the shell but, in my opinion, it is a variety of 
newcombi Ad. and Ang., and not of haine.sii Tryon. It is very 
close to the variety crebreciliata Ten. Woods, but differs in 
being thinner, lighter in colour, and in having a very thin 
epidermis, an extremely small spire, and an oblique and 
interiorly produced aperture. From newcombi Adams and 
Angas, the varieties pilosa Ten. Woods and crebreciliata Ten. 
Woods may be distinguished by their smaller, less inflated 
spires. 
Isidorella newcombi (Adams and Angas) var. crebreciliata 
(Tenison Woods). 
(PI. II, Fig. 25). 
1878 Physa crebreciliata Ten. Woods, Tr. Roy. Soc. Viet., xiv, p. 63. 
— Physa hirsuta Ten. Woods MS. 
1882 Physa crebreciliata Ten. Woods. Tate and Brazier, Pr. Linn. Soc. 
N.S.W., vi, p. 556. 
1882 Id. Smith, Journ. Linn. Soc. Lond., Zool., xvi, p. 290. 
1882 Aplexa crebreciliata (Ten. Woods). Tate, Tr. Roy. Soc. S. Aust., 
iv, p. 76. 
1886 Physa crebreciliata Ten. Woods. Clessin, Conch. Cab., i, Abth. 17, 
p. 351, pi. 49, fig. 10. 
