122 
MEMOIRS OF TEE QUEENSLAND MUSEUM. 
It would seem that the hollow granules are thinner than those of D. tenella , 
for, in most specimens examined, they are worn off leaving pitted surfaces, 
whereas in D. tenella such pitted surfaces were only rarely observed. 
Locality and horizon : About three miles east of Douglas Creek on the 
old Burketown road. 
DORYPYGE DECORIS sp. nov. 
(PI. XI, fig. 7.) 
Diagnosis : Pygidium subsernicircular in outline, ornamented on the ribs, 
axial rings and border with relatively widely spaced granules that vary in size. 
The axis tapers very slowly and is divided into five rings by prominent furrows, 
the first three of which are relatively wide. The posterior ring is bulb-like and 
has a faint transverse furrow. There are five pairs 
of lateral ribs that extend to a wide and prominently 
differentiated border over which they are faintly 
continuous to end in long, fine, spines, the posterior 
pair of spines being rather thicker than the others. 
From the contours of the one incomplete specimen a 
sixth (posterior) pair of rudimentary spines is 
suspected. The crests of the lateral ribs do not bear 
oblique grooves. 
Remarks : Only one specimen, a pygidium, has been collected. The species 
differs from the two previously described ( D . tenella and D. corusca) in the less 
tapering axis, the coarser and more widely spaced granules and the wider axial 
furrows. In granulation and furrows it is somewhat like D. damesi Resser and 
Endo (1937, p. 209, pi. 31, figs. 14-18) but has a narrow, less tapering axis. 
Locality and horizon : About three miles east of Douglas Creek on the old 
Burketown road. 
DORYPYGE sp. ind. 
(PI. XI, fig. 6.) 
A fourth species is represented by a fragmentary pygidium that differs 
from the other three species in having narrower lateral areas with more highly 
arched ribs. 
Locality and horizon : From limestones at the junction of Bull Creek and 
Douglas Creek. 
