139 
Dicellograptus sextans , J. Hall, Nos. 1108, 1109, mi, 1118, 1121, 
1122, 1123, 1127, 1131, 1133 (fig.). 
Dicellograptus sp., Nos. 1112, ii2'9. 
Dicranograptus fmeatus, J. Hall, No. 1106. 
Dicranograptus ramosus, J. Hall, Nos. 1109, 1112 (?), 1125 var. 
Dicranograptus ramosus , var. longicaulis, Elies and Wood, Nos. mi, 
1121 (fig.). 
Dicranograptics nicholsoni, Hopk., Nos. 1132, 1133, 1135* 
Dicranograptus sp., Nos. mo, 1130. 
Dicranograptid (? genus), Nos. 1103, 1114, 1116, 1120. 
This fine series of specimens contains two new species, which are 
described below. The beds are Upper Ordovician. 
(b) Little Jordan Creek , 50 chains above junction with Jordan River; 
Nos. 1136, 1137, 1138. 
Diplograptus tardus , n. sp., Nos. 1136 (type), 1137. 
Dicranograptus nicholsoni , No. 1137. 
(?) Climacograptus sp., No. 1138. 
Age— Upper Ordovician. 
(c) Shine’’s Gully , 10 chains from Jordan R.; Nos. 1139* 1140. 
Diplograptus , spp., Nos.. 1139, 1140. 
Age—U noer t ain. 
(d) From between Jordan River and B.B. Creek , on spur 30 chains east 
of west boundary of sheet; No. 1141. 
(?) Algal, 1141. 
Age—Uncertain. 
Remarks on the Species. 
Diplograptus calcaratus , Uapworth. 
Plate I., Fig. 1. 
(Diplograptus foliaceus, Murchison, var. calcaratus , Lapw., Cat. West. 
Scot., Foss., 1876, pi. I., fig. 30.) 
Hydrosome parallel sided, with a pointed sicular end. Length, about 
50 mm. ; breadth, at 15 mm. from sicular, 4 mm., and remaining the same 
to the antisicular end. Virgula free for more than 20 mm. Virgella 7mm. 
long. The virgula is not visible in the body of the polypary except near 
the antisicular end. Two lateral spines given off close to the sicula, and 
arising from a triangular denticle 1 mm. in length. The spines curve to¬ 
wards the sicula through a quadrant, and are 2 mm. long. 
Thecae, 8 in 1 cm., inclined at 25 deg., overlapping half their length. 
Aperture perpendicular to axis of polypary, not spined. 
I am not sure that the separation of the variety as a species is justi¬ 
fiable, though the tendency of late is, of course, in this direction. 
Not previously recorded for Australia. 
