429 
Plate 1 LXXV. 
39. — Cytheropteron praeantarcticum, Chapm. a , left valve ; b, valve 
seen from above’. Mallee bore No. 9, 256-263 feet, x 52. 
40. — Cyiheropteron reticosum, Chapm. a, left valve ; b, profile. 
Mallee bore No. 10, 195-225 feet, x 52. 
41. — Cyiheropteron rostratum, Chapm. a, carapace seen from left 
side ; b, profile from below. Mallee bore No. 11, 175-197 
feet, x 52. 
42. — Cytherella auriculus, Chapm. a, left valve ; b, profile. 
Mallee bore No. 11, 210-260 feet, x 52. 
43. — C. auriculus , Chapm. Left valve of a young example. 
Mallee bore No. 11, 219-260 feet, x 52. (Not numbered 
on plate). 
44. — Cytherella lata, G. S. Brady, a, left valve ; 6, profile. 
Mallee bore No. 5, 163-175 feet, x 52. 
45. — Cytherella polita, G. S. Brady, a, left valve ; h, profile. 
Mallee bore No. 9, 315-325 feet, x 52. 
46. — Cytherella pulchra, G. S. Brady, a, right valve ; b, profile. 
Mallee bore No. 10, 230-254 feet, x 52. 
47. — Cytherella punctata, G. S. Brady. Left valve. Mallee bor? 
No. 9, 256-263 feet, x 52. 
48. — Cytherella subtruncata, Chapm. a, carapace seen from the 
left side ; b, carapace seen from below. Mallee bore No. 
10, 225-230 feet, x 52. 
Plate LXXVI. 
Fig. 
49. — Scalpellum subquadratum, Chapm. a, carina, dorsal view ; 
b, lateral view ; c, interior of valve ; d, section across 
posterior end of valve (holotype). Mallee bore No. 4, 
163-170 feet, x 2. 
50. — S . subquadratum, Chapm. (?) Rostral latus (paratype). 
Mallee bore No. 10, 310-320 feet, x 2. 
51. — S. subquadratum, Chapm. Scutum : a, exterior ; b, interior 
of valve (paratype). Mallee bore No. 4. 163-170 feet, 
x 2. 
52. — Balanus psittacus, Molina sp. Rostral compartment: a, ex¬ 
terior ; b, interior, showing strongly denticulated septa of 
the radii. Mallee bore No. 9, 315-325 feet. x 2. 
53. — Balanus varians, G. S. Sowerby. A complete base. Mallee 
bore No. 9, 315-325 feet, x 2. 
54. — B. varians, Sowerby. A carinai valve. Mallee bore No. 9, 
315-325 feet, x 2. 
55. — Cestracion cainozoicus, Chapman and Pritchard. Anterior 
lateral tooth. Mallee bore No. 8, 210-219 feet, x 4. 
56. — Trygon cf. rugosus, Probst sp. a, anterior aspect of tooth ; 
b , posterior aspect; c, side view ; d, upper surface of tooth. 
Mallee bore No. 5, 163-175 feet, x 4. 
57. — Myliobatis moorabbinensis, Chapman and Pritchard. Lower 
or articulated surface of tooth. Mallee bore No. 10, 
225-230 feet, x 2. 
58. —(?) Chrysophrys sp. Rounded pavement tooth ; with crenu- 
lated basal margin. Mallee bore No. 8, 210-219 feet, 
x 5. 
59.—(?) Chrysophrys sp. Tooth with thickened basal margin. 
Mallee bore No. 3, 201-220 feet, x 4. 
