640. 
Prom the time of Prof. Bell’s description to the discovery of the specimen which 
came into my Colleague’s hands, nothing else appears to have been added to the history of 
this peculiar fossil.* The present example, of which only the abdominal somites and the 
legs are preserved, is contained in a blue limestone nodule. The three first pairs of 
legs are almost entirely preserved, especially the second pair, but of the fourth and fifth 
only small portions remain. The whole of the thorax has been removed, leaving the six 
abdominal somites turned under and adpressed against the remains of the legs. Neither 
the original figure nor the present specimen shows any trace of the lateral or sub- 
marginal ridges visible on the abdominal segments of the recent T. anomala. In a letter 
dated Townsville, May 27th, 1881, my Colleague says, speaking of the present fossil, 
“ The nodule of limestone was picked up here, but 1 can throw no light on where it came 
from. I do not know of any limestone on the coast nearer than Temple Bay, and No. 6 
Northumberland l8land.”t 
Loc. and Horizon. Beach at Townsville (i2. L. JacJc) — Post-Tertiary or Eecent? 
Sub-Kingdom— MOLLIJSCA. 
Sectiou-MOLLUSCA VEKA. 
Class— PELECYPODA. 
Order— OSTKACEA. 
Pamily— OSTEEIDiE. 
Genus — 08TBEA, Linnmus, 1758. 
(Syst. Nat., Ed. x., p. 696.) 
OsTBEA. PEs-TiGBis, Hanley, PI. 36, figs. 7-9. 
Ostrea pes-iigris, Hanley, Proc. Zool. Soo., 1845, xiii., p. 106. 
„ mordax, Gould, Wilkes’ TJ.S. E.xplor. Exped., 18.52, xii. (Mollusoa and Shells), p. 464, Atlas, 
f. 575, a and 5. 
Ohs. Several examples of a small Oyster, still retaining traces of the deep red 
purple colour characteristic of this species, as described by Q-ould, as well as the 
spatulate outline and solid structure, have been collected from Po.st-Tertiary deposits by 
my Colleague. The attached valve shows the “erect triangular tooth-like folds” for the 
reception of the digitations of the larger valve ; and also the concentrically-arranged 
pits round the margin within the valve, together with the darkly- stained adductor-scar. 
Authenticated specimens of Ostrea pes-tiyris, Hanley, have been compared with 
the present specimens, and also recent Australian shells, by Mr. E. A. Smith and the 
W riter, and we believe them to be identical. Hanley’s specimens were derived from 
Borneo, Gould’s from Fiji, and, being identical, the former’s name must be adopted. 
Dr. J. C. Cox, in his Paper, “ On the Edible Oysters found on the Australian 
and Neighbouring Coasts,” says : — “This species is a rock oyster found adhering very 
firmly to the rocks by the whole of the lower valve, from Brisbane in Queensland to far 
north beyond Port Denison . . . and probably all along the coast north of 
Moreton Bay to Cape Tork, and at Lord Howe’s Island.”^ 
Loc. and Horizon. Child’s Vineyard, Nudgee, about nine miles from Brisbane 
{JR L. Jack) — Estuarine Beds (Eaised-beach). 
* A number iif specimens, apparently of i he same species, were collected by the late Mr. James Smith, 
shortly before his death, at Casuarina I-sland, Keppel Bay. They occur in limestone nodules, and are now in 
the Geological Survey Collection, but have not yet been seen by my Colleague. (B.L.J.) 
+ These limestones are Palaeozoic. (Ii.L.J.) 
$ Proc. Linn. Soo. N. S. Wales, 1883, vii., p. 130. 
