290 
expansion. Umbilious open and deep, visible in a side view, but quite bidden from the 
front by the alate expansions of the inner lip. Keel narrow and sharp, and but little 
elevated. On the surface, striaj pass directly across the back from the keel to the 
peripheries above the umbilicus, but do not appear to cross the keel. 
Ohs. I, at first, took this to be one or other of the Salt Eange (India) species, 
such as B. Blanforjli, B. afflnk., or B. Jonesianus, From the first two, our species 
differs in the shape of the whorls, from the third by being less globose, and from all 
three in the nature of the surface ornament, and the exposure of the umbilicus. It 
ap25ears to belong to the group of Bellerophon liiulcus, Shy., to which it is probably 
most nearly allied, but the mouth is more depressed and lunate, and the callosity deeper 
and more pronounced. It is the largest Bellerophon I have yet seen from Australian 
rocks, and is a peculiar form in so far that it unites the characters of more than one 
group. 
Loc. and Horizon. Stony Creek, Stanwell, near Rockhampton (The late 
James Smith) — Gym^^ie Beds ; Banana Creek, near Banana, Dawson River (H. Maclcay ; 
Colin. De Vis) — Middle or Marine Series, Bowen River Coal Field. 
Genus— BUCAHIA, Hall, 1817. 
(Pal. New York, i., p. 32.) 
Bucani.v tkxttlts, I)e Koninch, PI. 41, fig. 8. 
Bellerophon decussatus, De Koninok (non Fleming), Descrip. Anim. Foss. Terr. Garb. Belgique, 1843, t. 29, 
f. 2a-d (exd. f. 3rt and h). 
Sucania textilis, De Koninck, Ann. Mus. It. Hist. Nat. Belgique,* 1883, viii., p. 150, t. 41, f. 22-25. 
Ohs. There is a very close resemblance between the shell originally called 
Bellerophon decussatus by De Koninck — but which is not the species of that name of 
Fleming — and the subject of our figure (PI. 41, fig. 8). It has been subsequently 
named Bucania textilis, and is a globular, high shell, with a deep umbilicus. The 
aperture is large and rather trumpet-shaped, with a thin expanded callosity and a rather 
shallow sinus. The band is large, projects but little, and is covered with small scales. 
The entire shell is ornamented with spiral ridges ’well separated from one another, with 
finer interpolated ribs, and crossed by strise of growth, which give to it a roughly and 
irregularly decussated appearance. 
In the Australian shell the umbilicus seems to be rather larger than in the 
European. 
Loe. and Horizon. Rockhampton District t (G. W- Be Vis; Colin. De Vis) — 
Gympie Beds. 
Genus — POBCBLLIA, LeveilU, 1835. 
(Mem. Soc. Geol. France, ii., p. ,39.) 
PoECEULiA Peausi, sp. nov., PI. 15, figs. 7 and 8. 
Sp. Char. Shell small, of five or six whorls ; section apparently quadrangular, 
back slightly convex or almost fiat ; sides of each whorl bearing prominent, elongated, 
obtuse tubercles, which gradually, and on the body-whorl insensibly, diffuse themselves 
on to the sides and back. Surface of the whole shell ornamented with spiral and trans- 
verse raised striae, giving rise to a fine regular reticulation, the points of intersection 
becoming minutely nodular. 
* Faune du Calcaire Carbonif^re de la Belgique, Ft. 4. 
t tSee note, p. 199, 
