69 
Class — OsPHAIiOPODA. 
T^lake. 
Order— TETRABRANCHIITA. 
Tamily— NAUTILIDiE. 
Genus — GTEOCUBdS, Be KonincJe, 1844. 
Gyroceras, De Kon,, Anim. Foss. Terr. Oarb. Belg., 1814, p. 530. 
„ Blake, Mon. Brit. Foss. Cephalopoda, 1882, Pt. i., p. 65. 
Obs. Oyroceras is liere used in the restricted sense as defined by Prof. J. P . 
GrrEOCEEAs PnxLPi, sp. nov., PI. 4, figs. 6, 7. 
Sp. Char. Shell large, of one and a-half to two whorls, somewhat irregularly 
convoluted ; section of the whorls apparently scutiform, and depressed or flattened on 
6 Ventral side ; diameter of the shell as preserved, SJ inches ; chambers shallow for 
f^^e of the shell ; septa, of which there are about fifty visible, appear to he excavated 
^^Wards the rear on the back and ventral side, and to be ai'chcd forward on the flanks — 
^ the younger end of the shell the septa average *-inch apart, but in the older portions 
are much closer ; siphuncle moderately large, and dorsal in position ; the back 
^3,s traversed in the direction of its growth by a number of sharp, parallel, semituber- 
spiral ridges ; the jmuuger portion of the shell, at least, appears to have been 
°''^.^^'^Dted by distant obtnse nodes on the sides overhanging the open umbilicus, 
, . t both the nodes and the interspace between them carry very fine epithecal stria?, 
ich describe the same curve as the septa.. 
This genus has not hitherto been recognised in the Devonian rocks of Aus- 
'^he specimen from which the above description is drawn up is unfortunately not 
if ^ preserved, nearly one-half of the shell having been removed longitudinally by 
Q p The body chamber is only partially preserved, to the extent of If inches. 
S' ^cars some resemblance to G. omnium, Goldfuss, as figured by G. and P. 
g . “®rger,* whose figure shows the same indistinct nodes on the sides, and the same 
g . *’'dges on the back, but G. ornatum appears to have been a much more robust 
ii than ours. It again resembles G. nodosum, Goldfuss, as figured by llronn,t in 
possession of the distant nodes at the sides, but does not appear to correspond with 
the^ 
latte: 
H: 
r lu the section of its shell. The species is named in honour of the discoverer, 
ohn Philp, senr., of Townsville. 
Sw Northern Railway (i2. L. Jack) ; Reid Gap, near Townsville (G. 
^-^*^^"^0110. Sweet, Melbourne) ; Panning River, near Panning Old Station (B. L. 
E. 
■* Versteinerungen Schichtens. Nassau, Atlas, t. 13, f. 1, 1 of, h. 
t Lethaea Geog., Dritto Auflage Atlas, t. 1, f. 4. 
