275 
Diplograptus foliaceus (Murchison), Nos. 699, 715, 731, 736, 744, 
749 . 753 ; 754 , 755 ; 75 6 ; 759 ; 7 62, 764. 
Diplograptus, cf. aculecttus (Lapworth), No. 755. 
Diplograptus , spp., Nos. 694, 698, 700, 711, 716, 718, 734, 745, 750, 
755' 757; 75 8 ; 760, 761, 763, 769, 771, 775, 777, 788. 
Diplograptus (Orthograptus) qiiadrimucronatus (J. Hall), Nos. 706 (fig.), 
711, 720 (?), 723, 732, 751, 758 (fig.), 767, 779. 
Diplograptus (Orthograptus), sp., No. 752. 
Cryptograptus tricornis (Carruthers), Nos. 700, 702, 743, 760, 766, 
768, 776. 
Climacograptus baragwanathi , n. sp., Nos. 694, 699, 716, 720, 
723 (type),, 731 (?), 760, 768. 
Climaco graptus bicornis (J. Hall), Nos. 701, 704, 712, 713, 714, 716, 
718, 722, 723, 724, 734, 741, 742, 749, 750, 754, 755, 758, 760, 765, 
768, 778, 779, 784, 785 (fig.), 788, 789. 
Climaco graptus, spp., Nos. 692, 694, 695, 703, 741, 750, 757, 758, 772, 
775 , 776 , 781, 782', 786. ■ 
Glossograptus, sp., Nos. 735, 766, 776. 
Retiolites, sp., No. 733. 
Indeterminate, 690, 696, 773, 783, 790. 
Descriptions and Remarks. 
Leptograptus flaccidus (J. Hall). 
Plate xxxiv., Fig. 1. 
Hydrosome slendbr and somewhat flexuous. Branches reaching a length 
of 8 cm., diverging at about 180 degrees, and usually reverted. Breadth 
of branches in sicular reg on 0.3 mm. ; gradually widening to .7, or more, at 
their free ends. Sicula slender, about 1.5 mm. long. Thecae 10 in 1 cm., 
slender, somewhat mucronate, inclined at a very low angle, ending opposite 
a thick-rimmed excavation at the base of the next succeeding theca. 
The species has not previously been recognised in Australia. [19 
examples.] 
Dicello graptus elegans (Carruthers). 
Plate xxxiv., Fig. 2. 
(See Hall, T. S., Proc. Roy. Soc. Vic. 18 (1905), p. 23, pi. 6, fig. 5.) 
Some examples are of considerable size, the separate branches being 
about 15 cm. long, and crossing one another at about 10 cm. from the sicula. 
The spiral twisting of the hydrosome about the sicular axis, which would 
bring this appearance about in flattened specimens, may be traced in the 
varying angles at which the theqse are embedded’, even in small specimens. 
In one place they are on the outer side of the curve, and in another on the 
inner side. [63 examples.] 
Di cello graptus , sp. 
There are nine or ten small specimens present which somewhat resemble 
D. sextans; but the branches seem too slender, and no details are preserved. 
Dicranograptus ramosus (J. Hall), var. semispinifer, var. nov. 
Plate xxxiv., Fig. 4. 
Hydrosome with a biserial portion from 16 to 20 mm. long, gradually 
expanding from a somewhat pointed sicular region, till at about 7 mm. it 
reaches a width of 2 mm. Thence to the bifurcation it maintains an 
even width. Branches diverging at 25 degrees; straight, with a width 
