OSTRACODS FROM SOME QUEENSLAND TERTIARY BASINS. 107 
Dimensions of holotype : Length, 0*85 mm. ; height, 0-47 mm. ; 
approximate thickness of carapace, 0-4 mm. 
Remarks : A search of available literature has failed accurately to 
place this species generically. It resembles some species of Erpetocypris, 
however, in its rather compressed, smooth, moderately calcified valves, 
but it is not as elongate as most species of this genus, the ratio of 
maximum height to length having been found to average 56 :100. In 
certain species of Erpetocypris , however, the height is greater than half 
the length, and in E. fas data (Muller) the posterior extremity is as 
narrowly rounded as in this species. Nevertheless, Ef sub triangularis 
does not resemble very closely any of the described species of this genus. 
In shape, in fact, it is not unlike some species of the shallow- water 
marine genus, Pontocypris Sars, such as P. trigonalis Jones and Hinde. 
It differs from P. trigonalis , however, in having the height greater than 
half the length, and the anterior extremity more broadly rounded. 
Although this ostracod is not abundant in The Narrows material, it 
has been found to be fairly common in some of the samples examined, 
and it has also been found at one locality in the Petrie Series. Unfor- 
tunately, however, very few undamaged valves have been found, and in 
many cases all that remains is an internal cast with small fragments of 
the shell sometimes present. This is apparently due to the very brittle 
nature of the shell and the fact that it is not very thick. The outstanding 
characteristic of this smooth-shelled ostracod is the subtriangular outline 
with the semicircular anterior extremity and the contracted, acutely 
rounded, posterior extremity. The species has been named after the 
characteristic subtriangular shape of the carapace valves. 
Localities and Age: In The Narrows Tertiaries: Bores 1. 3, 4, 5, 6, 
12, 13, 14 (see species occurrence charts), parishes of Targinie and 
Bundle, county of Deas Thompson, between Gladstone and Bockhampton. 
In the Petrie Series: Brecknell’s Bore, at somewhere between 60 and 
178 feet, subdivision 10 of portion 222, parish of Warner, county of 
Stanley, near Strathpine, N. of Brisbane. This species does not appear 
to be a long- ranged form. Probably Miocene. 
Genus Stenocypris Sars, 1889. 
Genotype: Stenocypris malcolmsonii (Brady), 1886, p. 297. 
Diagnosis: Carapace in lateral view very narrow and elongate. 
Height considerably less than one-half of length, and nearly uniform. 
Dorsal margin very gently arched to almost straight. Ventral margin 
concave in median region. Anterior and posterior extremities rounded. 
Valves subequal, left slightly larger than right. Free edges smooth, 
inner duplicatures very broad, especially at the anterior extremity. In 
profile narrow oblong. 
Range: No Tertiary representative of this recent freshwater genus 
appears to have been recorded previously. 
Stenocypris lowmeadensis, sp. nov. Plate VI, fig. 8. 
Holotype: F. 7915, University of Queensland Collection. Locality: 
From No. 2 Shaft, portion 30, parish of Warro, county of Flinders, 
near Lowmead, Queensland. Geological Horizon : Baffle Creek Tertiaries. 
