184 



Synonym — Cladopoda directa, Hutton, Trans. N.Z. Inst., 

 1877, p. 597, t. 16, f. 13. 



Tube elongate, round, irregularly contorted ; constricted at 

 intervals at the proximal end, more regularly distally ; con- 

 camerated and closed by an outwardly convex plate. 



It would seem to have attained to gigantic dimensions, as 

 one fragment of* a length of 160 millimetres has a diameter at 

 the ends of 8 and 10 millimetres ; other fragments measure 17 

 millimetres in diameter. 



Localities. — Calciferous sand rock of the River Murray 

 Cliffs at McBean's Pound, near Blanchetown ; in the raggy 

 limestones at Mannum ; in the limestone with glauconitic 

 grains, Aldinga Cliffs. 



Teredo, sp. 

 Casts of short clavate tubes, about 15 millimetres long by 

 three in diameter, in fossil wood at Gawler, indicate a species 

 with a totally different habitat from the above. 



Teredo, sp. Plate xix., fig. 4. 

 A single valve from the lower beds at Muddy Creek. 



FAMILY GASTROCELENIDjE. 

 Aspergillum (Humphreyia) liratum, spec. nov. Plate xix., fig. 11. 



Disk roundly oblong, adherent by one valve. Tube cylin- 

 drical, a little irregular, slightly angulated on the dorsal and 

 ventral sides ; ornamented with longitudinal distant threads 

 (about 20) and irregular folds of growth and striae. 



Dimensions. — Total length, 16; diameter of tube, 5 milli- 

 metres. 



Localities. — A perfect example, Adelaide bore ; fragments in 

 the calciferous sandstone near Morgan, and correlated beds at 

 Muddy Creek. 



More nearly related to A. multangular e^ Tate, than to the 

 other two living species, but is distinguished by the numerous 

 longitudinal threads on the tube. 



One or two other species of Aspergillum are indicated by 

 casts obtained from the glauconitic limestone at Aldinga, and 

 corresponding bed at Witton Bluff. 



APPENDIX. 



Ostrea manubriata, spec nov. Plate xix., fig. 10. 

 Shell rather thick, varying from narrow oblong to elongate- 

 acuminate. Upper valve flat or sub-concave, with thin, distant, 

 adpressed lamellae of growth. Attached valve narrowly com- 

 pressed, abruptly convex, concentrically flexuosely ridged and 



