236 
Phillips. In all the specimens the prominent and projecting umbone of the ventral 
valve is deeply channelled by a well-marked mesial sinus, which extends far up on the 
umbone. The hitter was tolerably high, but did not overhang the area in any of the 
specimens. The deep sulcatiou of the ventral valve accords better with the Devonian 
than the Carboniferous variety of Spirifera Urei, and after a comparison with specimens 
from both formations, this has been found to be a constant and well-marked character. 
Loc. and Horizon. Corner Creek, Great Star Eiver {E. L. Jack) — Star Beds. 
Genus— MAETINIA, McCoy, 1844. 
Martinia, McCoy, Synop. Curb. Limesfc. Foss. Ireland, 1844, p. 128. 
,, Davidson, Mon. Brit. Garb. Brad)., 1881, v., Pt. 3, p. 373. 
MaETIITIA. ? PEODUCTOIDES, sp. 1100 ., PI. 11, figs. 6-11. 
8p. Char. Shell elongately ovoid, narrow, more or less productiform in outline. 
Ventral valve elongate, narrow, moderately convex and curved, with a faint sinus in the 
umbonal region, more apjiarent in the young state ; umbo well incurved over the area, 
which is short, wide, and somewhat concave, with a wide, deep, triangular fissure. Dorsal 
valve transversely ovoid, flatter and less arched than the ventral, umbo much less 
incurved, hinge-line longer in comparison to the width of the shell than in the ventral 
valve, area broad and concave, with a wide triangular fissure; fold divided by a groove 
or depression throughout its entire length. Surface of both valves apparently quite 
smooth. Internal cast of the ventral valve with several longitudinal ridges. 
Ols. Although to some extent related to Martinia glabra, the elongated, 
produced, and narrow form, and short hinge-line are obviously so different from those 
characters in that species that I have not hesitated to propose the above name for the 
present shells, especially as the characters are constant throughout a large number of 
individuals. I believe them to be a very peculiar form of Martinia, possessing less the 
appearance of that genus, and more that of some Froducii, or even abnormal, smooth 
Pentameri. The curvature of the shell is in itself peculiar, and when viewed from the 
front of the ventral valve has much the appearance of a Productus, but the presence 
of the well-developed area and fissure at once di.stinguishes these shells from the genus 
named. 
I am undecided whether to regard the valve described above as the dorsal, as such, 
or as the young condition of the ventral valve. The occurrence of the two in common, and 
the size and shape of the smaller valves would favour the first view. On the other hand 
the area and fissure are too well developed to be those of a dorsal valve, and tend to 
support the latter opinion. 
Loc. and Horizon. Township at Cania Diggings, Burnett ; Three Moon Creek, 
three miles above Cania Diggings (IF! H. Eands) — Gympie Beds. At the Training 
Wall Quarries, Rockhampton, and at Stony Creek, Stanwell [Gympie Beds], interna 
casts occur, which I believe to be those of this species (^The late James Smith). 
Genus— MAE TIHIOP SIS, Waagen, 1883. 
(Pal. Indioa (Salt Range Foss.), Ser. xiii., Vol. i., Pt. 4, fas. 2, p. 524.) 
Obs. Prof. J. D. Dana was the first who referred * Spirifer subradiat^^' 
G. B. Soworby, to the characteristic European species, Spirifera glabra, Martin, ‘ 
reference afterwards more fully carried out by Prof. De Koninek.t On the strength 
* Geology Wilkes’ U. S. Exiilor. Exped., Vol. x., p. 683. 
+ Foss. Pal. Nouv.-Galles du Sud, 1877, Pt. 3, p. 227. 
