255 
Prof. De Koninck. The terraee-like undulations are much too pronounced and coarse 
for the wavy lines ornamenting the surface of P. uniulatus, M cCoy,* otherwise there 
is some resemblance between the two forms. 
Loc. and Horizon. Stony Crock, Stanwell, near Eockhampton {The late James 
Smith) — G-ympie Beds. 
PnonrcTus SEMiEETicuLAirs, Martin, sp. ? 
Conch. (Anomites) semireticulatus, Martin, Pet. Derh., 1809, t. 32, f. 1 .and 2, t. 33, f. 4. 
Produotus semireticulatus, Davidson, Mon. Brit. Garb. Brach., 1801, Pt. 1, p. 149, t. 43, f. 1-11, t. 44, f. 1-4. 
I, ,, De Koninck, Poss. Pal. Nouv-Gailes du Sud, 1877, Pt. 3, p. 188, t. 9, f. 2. 
Ohs. Small, partially decorticated casts, with the long hinge-line, alar spines, and 
chequered surface of this species have been collected by Mr. James Smith and Mr. 
Sands. The length of the binge-line, amongst other characters, distinguishes it from 
P. hrachythcerus. 
Loc. and Horizon. Stony Creek, Stanwell, near Eockhampton {The late James 
Smith) ; Spring Creek, Cania, Burnett {W. H. Bands) — G-ympie Beds. 
Peoductus longispinus, J. Sotcerly, ? PI. 13, fig. 2. 
Producfus longispinus, .T. Sby., Min. Con., 1814, i., p. 154, t. 68, f. 1. 
i> ,, Davidson, Mon. Brit. Garb. Brach., 1861, Pt. 4, p. 154, t. 35, f. 6-19 (for general 
synonymy). 
„ „ Etheridge, Quart. Jonrn. Geol. Soc., 1872, xxviii., Pt. 3, p. 333, t. 18, f. 9. 
Ohs. This common and widely spread shell is the most v.ariable of the Produeti, 
O'Ud seldom attains a larger size than our specimen, which is a cast of the interior of the ' 
dorsal valve. It is known in the Carboniferous Limestone of the Puiijaub, in India, 
Carro Creek in Tasmania, Bolivia, Eussia, and Belgium, and everywhere in Britain ; we 
How, for the first time, record it from Queensland. {Etheridge.) 
Log. and Horizon. Don Eiver {The late B. Baintree) — G-ympie Beds. 
Peoductus, sp. ind. («), PL 13, fig. 6. 
Ohs. A peculiar form which must, for the present, from the want of sufficient 
Hiaterial, remain undetermined, has been obtained in the Burnett District. Specimens 
consist of decorticated casts, with well-separated, distinct, fine, string-like radiating 
costm. Such are found in some varieties of Produetws giganteus, Martin. They are 
Hot reticulate like P. semireticulatus, and the ribs are too coarse for a variety of 
Cora, although characters in common with each of these species are present. The 
sharp and incurved condition of the beak of the ventral valve indicates a transition 
towards Productus striatus, some forms of which occasionally possess coarse strioe. 
Loc. and Horizon. Near Tarrol Station, Burnett District {W. H. Bands) — 
^ympie Bods. 
Peoductus, scp. ind. (J.), PI. 12, fig. 15. 
[Compare P. ftmhriatus (Sby.), Davidson, Mon. Brit. Garb. Brach., 18 1, Pt. 4, t. 33, f. 13.] 
Ohs. A very remarkable and interesting fragment presented itself on a slab, 
'^ith other fossils, from the prolific beds of Stanwell, consisting of the outer shell of a 
'^'oductus, seen from the inside. The spine bases are serially arranged in concentric 
after the manner of those of Productus Jimhriafus, Sby., whilst around the edge 
of the shell they are visible in section diverging from the surface of the valve. There is 
the irregularity of disposition seen in the spines of P. aculeatus, but, on the con- 
the bases are on rather raised concentric rims, as in the species first mentioned. 
* Ann. and Mag. Nat. Hist., 1847, xx., p. 230, t. 13, f. 2. 
