59 
Genus— SYRmGOTOlUk, Goldfnss. 
Sykingopora auloporoides, Jj. G. de Kouiuck. 
ri. Ill, tig. 1. 
Corallum forming masses of considerable size. Corallitcs short, at 
irregular distances from one another, and growing in every direction, very 
seldom united hy lateral processes. They usually commence hy being rather 
creeping, and when they attain a length of five to six millimetres buds are 
given forth which grow longer and rise more or less vertically, hut their 
growth is never great, nor does it exceed three centimetres. Epitheca very 
thick. Aperture of the calice circular, edges rounded and slightly turned in. 
Dimensions. — The diameter of the corallites varies only from one to 
one and a half millimetres. 
Relations and Differences. — In the dimension of the corallites and 
the shape of the calices this species resembles S. ceespitosa, Goldfuss, from 
wdiich it differs in the small length, the little regularity in the direction of 
these same corallites, and in the space which separates them from one 
another. 
Horizon aiul Localitij. — One fairly large s|)ecimen has been found at 
Moara Creek, to the north of Tamworth.’^ It is associated with Alveolites 
suhcequaHs, Milne Edwards and J. Ilaime, and occurs in bright grey dolomitic 
limestone. 
Genus — ALVEOLITES, de Lamarck. 
1. Alveolites obscurus, L. G. de Koninck. 
PI. I, fig. 11. 
This coral consists of two branches only, almost at right angles 
to one another ; they are slightly compressed and only three millimetres 
in diameter. The calices are very oblique, suhtriangular in shape, edges 
very thin, hut little regular and arranged rather close to one another; the 
septal projections are very slightly apparent. 
Horizon and Localitij. — This Alveolites is very nearly related to A. 
lahiosa, Eillings, from which it is distinguished only hy the number and the 
closeness of the calices. It has been found in a compact black limestone on 
the banks of the Murrumbidgee, in the Yass District. 
^ [It is possible that the locality mentioned here and on succeeding pages by De Koninck as ‘ ‘ Moara Creek, 
to the north of Tamworth,” and “ Mowara, in the neighbourhood of the Moonbi Eanges,” is that now known 
as “ Moor Creek.” It must be pointed out, however, that Attnnga Creek, a few miles to the north of “ Moor 
or “ Moore Creek,” is called “ Mopar Creek ” on an old Colony Map. — W.S.D.] 
K 
