Further remarks on Australian Sérophalosie ; and de- 
scription of a new species of Aucella, from the 
Cretaceous Rocks of North-east Australia. 
By R. Eruerives, Junr., F.G.S. 
[Read before the Royal Society of N.S.W., 4 July, 1883.] 
1—NOTE ON AUSTRALIAN STROPHALOSLE. 
Genus SrropHatosia. King, 1844. 
(Annals Nat. Hist., 1844, xviii. p. 28.) 
Strophalosia Gerardi. King. 
8. Gerardi. King, Annals Nat. Hist., 1846, xviii, p. 93. 
8. mere King, Mon. Permian Foss. England, 1850, p. 96,. 
AD, £.6 & 7. 
S. Gerardi. Etheridge Junr., Proc. R. Phys. Soc., Edinburgh, 
1879-80, p. 294, t. 12, £ 34-37, t. 13,f 38. [For general 
synonomy. | 
_Obs. The specific characters of this species have already been 
given elsewhere, and, with the exception of the degree of — 
a ae now referred to. The length of the i e is 
maint variable, long in some examples, short in others, 
the sh as before stated, it never extends the whole width of 
ell. 
qlee the examples of this species now under con- 
Vent” sive us an insight into the internal character of the 
casts of valve, but unfortunately not of the dorsal one. ax 
these interiors show the deep blunt umbonal cavity of the 
& 
