505 
Class — R eptilia. 
Order— CHELONIA. 
Family — CHELONID^ 
Genus— NOTOGRELONE, LydeMer, 1889. 
Notochdi/s, Owen {non Gray), Quart. Journ. Geol. Soc., 1882, xxxviii., p. 178. 
Notochdone, Lydekker, Geol. Mag., 1889, vi. (3), p. 32.5. 
,, Lydekker, Cat. Foss. Reptilia and Amphibia Brit. Mus., Pt. 3, 1889, p. 70. 
Notocheione costata, Owen, sp. 
Notochelya costata, Owen, loc. cit., p. 178. 
„ „ Eth. fil., Geol. Mag., 1880, iii., p. 329. 
Notochelone eostata, Lydekker, loc. cit., pp. 325 and 70. 
Ohs. The remains of this Chelonian consist of the anterior part of the carapace 
and j)lastron. These portions were not united hy bone, so that no affinity can exist with 
the freshwater and terrestrial genera. It appears to be more nearly allied to the marine 
Turtles {Chelone). 
Sir Richard Owen states this to be the first evidence of a fossil Chelonian 
obtained in Australia, but he appears to have overlooked the late Mr. Krelft’s discovery 
of the carapace of a freshwater species in the AVellington bone-caves* and Dr. E. P. 
Ramsay’s description of the pelvis of a Turtle from Lord Howe Island.f 
Furthermore, a marginal scute of a Chelonian from Westbrook, a tributary of 
Oakey Creek, Condamine River, has long been in the collection of the G-eological 
Department of the British Museum, presented thereto by Dr. Gr. Bennett. 
The district in which this interesting fossil was found abounds in organic remains 
of Cretaceous age, and there is nothing in the structure of this Chelonian which would 
militate against its having lived at that period of the earth’s history. 
Loc. Landsborough Creek, Thomson River (JProf. A. Liversidge — Colin. 
Sydnej^ University). 
Order— ICHTHYOPTERTGIA. 
Genus— I0HTRT0SAUBU8, Konig, 1820. 
(loon. Foss. Seotiles, t. 19, f. 250.) 
ICHTHYOSATTEtrS AUSTEAIIS, MoCoy. 
Ichthyosaurus australis, MoCoy, Ann. Mag. Nat. Hist., 1867, xix., p. 355; Ihid., xx., p. 196. 
„ „ MoCoy, Trans. R. Soo. Viet., 1868, viii., Pt. 1, p. 42 ; Ibid., 1869, ix., Pt. 2, p. 77. 
„ „ Moore, Quart. Journ. Geol. Soc., 1870, xxvi., p. 228. 
8p. Char. Centrums of the vertebrse four inches wide, three inches deep, and one 
and a-half inches long, deeply biconcave, and with conical articular surfaces ; paddles 
with eight rows of phalangeal joints ; tooth with a rough, bony, square base, above which 
the smooth base of the crown has a circular section, the remainder of the conical crown 
being marked with close irregular obtuse ridges, with narrow intermediate impressed 
lines ; eyes five and a-half inches in antero-postei'ior diameter, the pupillary opening two 
inches, and the sclerotic divided into about thirteen pieces. {McCoy.) 
Ohs. This is said by Si r F. McCoy to be one of the largest species of the genus, 
being twenty-five feet long. The teeth resemble those of I. campylodon. Carter, from 
the English Chalk. 
* Australian Vertebrata, Foss, and Recent, 1871, p. 39. 
t Proc. Linn. Soc. N. S. Wales, 1882, vii., Pt. 1, p. 86. 
