23 
which threw off root-like processes from the 
outer skeleton, enabling it to stand upright in the 
coral mud. 
Fig. 25. Median Dorsal Plates of a 
“ Berrybone ” Fish — Phlyctaenaspis australis 
(McCoy), var. confertituberculata Chapm. 
Devonian. Buchan, Gippsland. 
Here may be seen the unique impression of a jelly-fish Case 32. 
(Discophyllum mirabile) which was lately dis- 
covered in a Brunswick brick-pit. It is so well 
preserved that it shows the concentrically ribbed 
ornament, the manubrium, the genital pouches 
and even the hair-like tentacles. 
In this case are also some Silurian Graptolites 
(Monograptus, Oyrtograptus, and Betiolites) ; 
a remarkable series of Brittle-stars (Protaster, 
Gregoriura, Sturtzura) ; Starfishes (Urasterella, 
Palaeaster) ; and Crinoids (Hapalocrinus and 
Helicocrinus). The last-named is a remarkably 
fine example of a stalked starfish with a plumy 
crown, and a slender stem with coiled termination 
for attachment to seaweed or other marine objects. 
The stem-joints of Crinoids have in the past built 
up great masses of limestone at Toongabbie and 
the Thomson River in Gippsland. 
