54 
entirely misunderstood tlio structure of this coral. The figures given hy that Author 
accord remarkably well with our form; and although he states in his description that 
tahulas are wanting, they appear to he shown clearly enough in Fig. 4 of his work, as 
cited. Assuming, then, that Billingsia alveolaris is identical with the Queensland 
specimens, it is impossible to accept Do Koninck’s suggestion that the present species is 
transitional between Awlopora and Syringopora. 
Loc. Ecgan’s, Northern Eailway, thirty-one miles from Townsville. {B. L. Jack?) 
Alveolites alteolaeis, var. queevslandensis, EtTi. Jll. and Board, PI. 2, figs. 4-6. 
Alveolites alvcolaris, var. queenslandensis, Eth. fil. and Foord, Ann. and Mag. Nat. Hist., 1884, 
p. 177, t. vi., f. 2 a, b. 
Ohs. This form differs from that described above, chiefiy in the size of the 
corallites, which are considerably larger than those of A. aleeolaris. It also appears to 
be branching and lobulate, and occurs in large weathered and rounded fragments, one of 
which measures about 12 centimeters in its greatest length, and about 6 centiinoters in 
thickness, but the specimen must have been considerably larger when perfect. Scarcely 
any of its surface remains, and microscopic sections do not yield very satisfactory results 
on account of the extensive mineral alteration that the fossils have undergone. 
In their longer diameter the corallites measure about two-thirds of a millitneter, 
in their shorter about one-third or even less. The tabulae are somewhat numerous, 
horizontal or oblique, and sometimes curved, and in some places they anastomose. 
The mural pores are large and apparently numerous. 
Loe. Eegan’s, Northern Eailway, thirty-one miles from Townsville. (B. L. Jack.) 
Alveolites eobustus, Bominger, PI. 1, figs. 13, 14. 
Cladopora rohusta, Rominger, Report Geol. Survey Michigan, 1876, iii.. Ft. 2, p. 53, t. 22, f. 1, 2. 
Ohs. A ramose species, with affinities to PaeJiypora, and possibly really referable 
to this latter genus. The surface characters are much destroyed by weathering, and as 
its internal structure shows nothing hut mural pores and tabulfo, with no special 
features of interest, little further can be said about it. The coral may at once be 
distinguished from Fachypora meridionalis by its very oblique tubes and calicos. 
The largest of the specimens hitherto examined (by no means a perfect one) is 
3 j inches in length. The distance between two points of bifurcation or dichotomiza- 
tion of the branches is 1 inch 3 lines. 
This species is very like Alveolites (Oladopora) rohtisius, Eom., and so closely 
resembles his smaller figure of that form that one is induced to refer it to the latter, 
even without an actual comparison of specimens. The Queensland examples jiossess 
the same habit of growth as those from Michigan, and the calicos correspond in size 
with the figures indicated. Alveolites rohustus, Eiim., is met with both in the Cornifer- 
ous and Hamilton Groups (Lower and Middle Devonian) of North America. 
Loc. Arthur’s Creek, Burdekin Downs. {B. L. Jack.) 
Alveolites, sp. ind., PL 1, figs. 15-17. 
Alveolites, sp. ind., Nicholson and Eth. fit, Ann. and Mag. Nat. Hist., 1879, iv., ix 222. 
Ohs. An expanded, lobate, or palmate form, which, in the present unsatisfactory 
and chaotic state of Alveolites, is very difficult to determine, although, specifically 
speaking, we do not know anything precisely like it. Sections show that the corallites 
were thin-walled and irregular, with mural pores and plenty of tabula). With the 
meagre material before us, it would be only unnecessarily increasing nomenclature to 
bestow a name. (^Nicholson and Etheridge fil.) 
Loc. Arthur’s Creek, Burdekin Downs. {B. L. Jack.) 
