560 
Two previous but indefinite records of Cretaceous Echini have been made. In 
1860, Dr. A. E. C. Solwyn wrote * * * § : “I have lately discovered, embedded in our 
Pliocene water-worn gravel, uear Melbourne, two specimens, considered by McCoy to 
belong to decidedly Chalk species. One is a very perfect Echinoderm, the other a 
fragment of a Coral.” Such specimens have never been described by Prof. McCoy, but 
he has referred to them in very emphatic terms in his Paper “ On the Discovery of 
Cretaceous Pos.sils in Australia,” wherein he remarks f : “ Mr. Selwyn also alluded 
formerly to a specimen of an Echinide in flint given to him as found in sinking a well 
at Prahran, near Melbourne, having been identified by Prof. McCoy as the European 
Cretaceous Co7iulns allogalerus. •The Author had also a ^int Ananchytes ovatus oi the 
same age, given to him as found at Eichmond, near Melbourne, also ; but he considered 
both these specimens were unsatisfactory as far as the proof of their having really * 
belonged to any Australian stratum.” Nor is any reference made to these species in 
Prof. McCoy’s second Essay “ On the Eecent Zoology and Palaeontology of Victoria,”^ 
under the section, “ Cretaceous Period.” 
The second reference is to a remark of the late Mr. Charles Moore, who, 
speaking of a collection of West Australian fossils on view at an E.vhibition, says § : “In 
addition .... there was a silicious cast of a Micraster from the Chalk.” So far 
as I am aware, no further stops have been taken to test the occurrence of this genus in 
West Australia. 
Few absolute particulars can be obtained from the present specimen, I regret to 
say, from its bad state of preservation, beyond the fact that it is one of the Spatangidse, 
and probably referable to Micraster, but as neither the fascioles nor tubercles are visible, 
the reference to this genus is even questionable. 
The teat, in its present state, is two inches long from anterior to posterior, and 
one and a half inches wide. It is spatangoid in outline, with petaloid ambulacra, the 
anterior pair much the longest, odd or anterior ambulacrum reposing in the sulcus, 
which evidently indented the anterior border. The specimen is a cast, the test having 
been entirely removed. The whole of the abactinial surface is concealed in immovable 
matrix. It will be subsequently figured. 
Loo. Corporation Quarry, Maryborough ((?. Siceet — Colin. Sweet, Melbourne). 
Sub-Kingdom — MOLLII SCA. 
Section— MOLLU SCOID A. 
Class — B kachiopoda. 
Order— TRETENTERATA, 
Family— EHTNCIIONELLIDAl. 
Genus— TMIYNCIIONELLA, Fischer, 1809. 
(Kotioe Foss. Ctouv. Moscou, p. 35.) 
EuTifcnoivELLA CROYDONENSis, sp. nov., PI. 41, figs. 13 and 14. 
Sp. Char. Shell moderately transversely elongated, wider than high, feebly 
convex, and sometimes attaining rather large proporlions; cardinal margin angular; 
front faintly sinuated. Yontral valve with a wide shallow sinus, and the flanks to some 
* Quart. Journ. Geol. Soc., 1^60, xvi., p. 148. 
+ Trans. K. Soa Viet., 1866, vii., p. 50. 
t Ann. and Mag. Nat. Hist., 1807, xx., p. 195. 
§ Quart. Journ. Geol. Soc., 1870, xxvi., p. 227. 
