299 
the trail of the common British Vurptira, figured by Professor H. A. Nicholson and the 
Writer.* It is therefore clear that, between the Crustacea and Mollusca, there is a 
wide field for speculation as to the origin of these peculiar burrows. 
In their disjointed nature, they bear considerable resemblance to the so-called 
Carboniferous worm-tracli, elevated into a genus by the late Mr. G-. Tate, of Alnwick, 
under the name of JSione.f When seen in a weathered disjointed state (PI. 8, fig. 2) 
there is a very marked similarity to his Jiione moaiUformis.X 
In the memoir quoted above, Mr. Ilandcock speculated as to his tracks or 
burrows being made by Trilobites, and appeared to favour such an expilanation. Those 
under description, however, would not be large enough to accommodate the PMllipsia 
and Grijjithides, hitherto found in the Permo-Carboniferous rocks of Queensland. 
Pinally, it may be pointed out that these buri’ows appear almost identical 
with the so-called worm -tracks from the black slates of the Happy Valley, north of 
Nelson, New Zealand, and figured in the account of the “Novara” Expedition. § 
Loc. and Horizon. Athelstane Range, near Rockhampton ( The late J ames Smith ) ; 
Rockhampton District II (D. W. De Vis; Colin. De Vis) — Gympie Beds. 
F. 
* Mon. Sil. Foss. Girvati in Ayrshire, 1880, Pt. 2, p. 317, f. 11. _ a rj t 
tThe Geology of Beadnell, in the County of Northumberland, with a description of some Annelids of 
the Carboniferous Formation. Geologist, 18.59, ii., p. 59. 
Jioc. cU., p. 62, t. 2, f. 6. - - £ - 
SReise Oester. Fregatte “Novara,” 18.57-59, Geol. Theil., Bd. i., 2 Abth., 1865, t. 7, f. o. 
II Sec note, p. 199. 
