340 W. H. Hudleston — Fossil Shells from South Australia. 



is figured and described by Mr. E. Etlieridge, P.E.S., from Cretaceous 

 strata, Maryborough, North Queensland (see Quart. Journ. Geol. Soc. 

 1872, vol. xxviii. pi, xxi. fig. 1, p. 352). It is just possible that our 

 shell may have been obtained from a similar (Cretaceous) horizon in 

 South Australia. 



Mtacites ? AusTEALis, sp. nov. PL XI. Fig. 9. 



Length 57 millimetres. 



Width to length 0-67 



Thickness to length 0-42 



Proportional length of anterior area 0"40 



Shell moderately elongate, inequilateral. The anterior area, which 

 is angular and inflated, occupies about |ths of the length of the 

 shell. Posterior area compressed. General shape of the shell sub- 

 arcuate with a moderate gape. Hinge-area nearly straight. Valves 

 fairly tumid in the umbonal region, but becoming attenuated towards 

 all the margins. 



Very little of the shell substance remains ; it was thin, the granu- 

 lations not very obvious, the markings, judging from the impressions 

 on the cast, consisted of a rather prominent concentric ridge and 

 furrow, with very fine concentric lines between. 



Whether this shell should be referred to Myacites or Panopma is 

 not perfectly clear. It has a certain degree of resemblance to some 

 well-known Mesozoic forms occurring in Europe. But in order to 

 guard against a wrong identification, it is safest to bestow upon it 

 a specific name, which may be temporary or permanent according 

 as more and better specimens are obtained. 



Pig. 9. — Although not absolutely identical with any of the 

 Lamellibranchiata figured by Mr. E. Etheridge, F.E.S., in Mr. 

 Daintree's paper on the Geology of Queensland, Australia (see Quart. 

 Journ. Geol. Soc. 1872, voh xxviii. pp. 317-358), it nevertheless 

 has a general resemblance to these shells, and is most probably of 

 Cretaceous age (compare Fig. 9, PI. XI. with Daintree's pi. xxi. 

 figs. 2, 2a). If our view be correct, this is most likely to have 

 been collected from the Peak district, in which direction Cretaceous 

 beds are believed to extend. Mr. Henry Brown having traced them 

 as far as Lake Frome on the South, and Pandie-Pandie on the 

 North, and as far West as the 139th degree of longitude. 



Cytherea Woodwakdiana sp. nov. PL XL Figs. 8a, 8b, 8c. 

 There are three specimens of a small veneriform species. One of 

 these is in a fair state of preservation, whilst another shows the 

 internal mould, which appears to exhibit the mark of a pallial sinus. 

 If this appearance is correctly interpreted, these fossils should most 

 probably be referred to Cytherea. 



Length 16 millimetres. 



Width to length 80 : 100 



Thickness to length 38 : 100 



Shell oval, rather compressed, moderately inequilateral, longer 

 than wide ; anterior margin rounded, lunule shallow. Posterior area 

 less compressed, margin rounded. Hinge-line curving posteriorly, 

 with a longitudinal excavation for the passage of a short but prominent 



