3 
In 1892 “The Geology and Palyeontology of Queensland”^ was 
pul dished, and in it are recorded : — 
Avicidopecten sid)qnine[uelineatus, McCotj. 
,, liniaeformis, Morris. 
lleltopeeten illawarrensis, Morris. 
Prom the Gyinpie and Star l)eds the folloAving forms were recorded 
and described : — 
Entolium, sp. iud. 
Eiichondria, sp. ind. 
Avicnlopceten, sp. ind. 
,, multiradiatus, Eih. 
,, Lanricnti, EtJi.f l. 
,, Eevisii, Eth.fU. 
A few additional rererenees to the subject, by Mr. R, Etheridge, Junr., Mr. 
R. Al. Johnston, and otiicrs, will 1)C found in the systematic portion of this 
work. 
Students of Australian Palaeontology — more ])articnlarly that of the 
Paheozoie formations — -labour under considerable difficulties, o^\'ing to the 
fact that the types descriljed by Alorris, McCoy, Dana, Dc Koninck and 
Etheridge (I)aintrc(; Collection) arc not available for local study and 
comparison. 
The Strzelecki Collection, described by John Alorris, is in the British 
Aluscnm (Natural History) ; the lirst Clarke Collection, described by AIcCoy, 
is deposited in the Sedgwick Memorial Aluscum, Cambridge; the Dana 
collection is in the United States National Aliiseum, JYashington ; and the 
even more important collections brought together by IV. B. Clarke, and 
described by Dc Koninck, was totally destroyed by lire; while the Daintrce 
Collection of Queensland fossils is believed to be also lost. Owing to this 
series of calamities some points can never bo definitely settled, and 
uncertainty of identity is augmented by the fact that many species were 
created on single, and others on imperfect, specimens — either fragmentary 
or in the form of casts. 
Tliese disabilities are perhaps most marked in the case of the Permo- 
Carhoniferous Pelecypoda, and more especially in the case of the Avievdo- 
pcctinidm. On examination of the type iigurcs, it will he readily seen, for 
* R. L. Jack fuid K. EtlieriJgc, .Junr. (4tj., Rrisbane, 1802), pp. 264-270, 
