208 
Eockhampton, with similarly ornamented plates. The calyx has been obliquely pressed 
to one side, and although obscure, the shallow basal cup and the succeeding radials can 
ioc. and Horizon. Corner Creek, Great Star Elver (E. L. Jac*;— Star Beds ; 
Eockhampton District * (0. TV. He Fii>9 Beds. 
Pamily— PLA.TTCEINIDiE. 
Genus— HLATYCBINUS, Miller, 1821. 
(Ifat. Hist. Orinoidea, p. 73.) 
Platxchinus ? Nux, sp. nov., PI. 38, fig. 3. 
So. Char. Calyx nut-shaped, length twenty-two millimetres, breadth fifteen 
millimetres. Basal plates forming a well pronounced, moderately deep cn]i, to some 
extent fiattened on its articular or dorsal side ; articular facet for stem-joint small. Eadial 
plates oblong, gently convex, and straight-sided. The basals bear vertical, continuous, 
well-separated ridges, which are continued on the radials, and are most conspicuous 
on tho distal two-thirds of the plates, where they spring from the basi-radial sutures 
' ^ ' Ohs. The foregoing are the only facts which can be gained from this imperfect 
fossil, which appears to be an internal cast of the calyx. The long straight-sided 
radials arc very apparent, and, with a rather similar basal cup, give to the calyx a nu - 
shaped outline, more particularly that of the hazel-nut. No other plates are preserved. 
It is provisionally referred to Plaf.ycrinus rather than Hiohoorinus, to which it also cars 
some ro.semblance, but it must be admitted there is no trace of the articular margins 
along the ventral edges of the radials. „ ,r i 
Loe and Horizon. Eichards’ Homestead, three miles south-west of Moiiiii: 
Britton Township, Lat. S. 21° 20', Long. E. M8° 30' (A. L. Morisset)-mM\e or Marine 
Series of the Bowmen Eiver Coal Field. 
Ortler-INABUINATA, 
Eamily— POTEEIOCEINIDHl. 
BasavCup op Ceinoid, PI. 44, fig. 7. 
Ohs. At first sight, this little eiip has much the appearance of a Platycriiiite^ 
but is perhaps made properly referable to one of the Encrinns-\ike genera w ‘ 
depressed or saucer-shaped calyx, such as Oerioorinus, “White, Ensocrinus, M. & V •> 
Stemmatocrinus, Traiitschold. These are all Carboniferous genera, and mostly of ratn 
late date in that formation. _ _ . 
The under-basals in our little specimen form a flat disc, pentagonal in on ’ 
and apparently undivided. The basals seem to be pentagonal, and are, certain D 
abruptly bent upward, “the lower portion included in the truncate surface, the upi ^ 
almost vertical.” These characters so strictly accord with those of Blemmatocrinus, 
it is better to provisionally include this fragment in that genus. . „ a 
Loc. and Horizon. Eockhampton District * {G. W. Ho Vis ) — Gympie Be s- 
* See note, iiage 199. 
