70 
ing the literature about Neogaimardia rostellata, which is new to 
New Zealand: 
Kellia rostellata Ta te, Trans. Roy. Soc. S.A., xi, 1889, p. 63, 
pi. xi, fig. 14. 
Kellia rostellata Wilson, Proc. Roy. Soc. Viet., ii, 1890, p. 
64—67. 
Kellya rostellata Tate & May, P.L.S.N.S.W., xxvi, 1901, p. 432. 
Kellia rostellata Pritchard & Gatli ff, Proc. Roy. Soc. Viet., 
xii, 1904, p. 225. 
Neolepton rostellatum Hedley, P.L.S.N.S.W., xxx, 1906, p. 
542, pi. xxxi, figs. 3, 4. 
Neolepton rostellatum Verco, Trans. Roy. Soc. S.A., xxxi, 1907, 
p. 106. 
Neolepton rostellatum Gatliff & Gabriel, Proc. Roy. Soc. 
Viet., xxi, 1908, p. 389. 
Neolepton rostellatum May, Check-List Moll. Tasm., 1921, p. 19. 
Neolepton rostellatum May, Illustrated Index Tasm. Shells, 1923, 
pi. viii, fig. 12. 
Localities: North Island: 3, numerous sps., 1. 2.8. — 21, mas¬ 
ses of small sps. 
The habitat in Australia of this species was communicated by 
Mr. Hedley thus: 
Type locality: Port Phillip Heads, Victoria, 7—9 fms, on sea 
weed (Wilson). — Quichen Bay, alive, Lacepede Bay and Mac 
Donnell Bay, S. Australia (Verco), King Island, Tasmania (May). 
Mr. Hedley further informs me that, according to his opinion, 
this form is referable to Gaimardia. This relationship has been 
corroborated by my examination of the anatomy and the hinge, 
but differences prevail which make necessary the creation of a 
new genus for the present species. 
Hedley (1906, cf. above) has given a figure of this shell and 
its hinge. This differs, as already mentioned, from the normal type 
of the family in being of the cyrenoid structure with a tooth 1 in 
the right valve embraced by tooth 2 of the left one. Besides the 
characteristic hinge teeth there are some peculiar accessory mar¬ 
ginal teeth. There are in both valves 3 posterior and 2 anterior 
ones, and between them small sockets for receiving the teeth of op- 
posite valves. That these teeth are an accessory formation is evident 
