FOSSILS FROM THE PALZOZOIC ROCKS OF N.S.W. 249 
Class—CRUSTACEA. 
Genus Exorinurvs. Emumrich, 1845. 
(Neues Jahrb. f. Mineral., 1845, 
E. punctatus. Salter. Mem. Geol. Survey, Gt. Brit. Dec. vii, 
1853, No. 4, p. 6 (for general synonomy). 
bs. There are sive pygidia and portions of a cephalic shield 
to belong to this 
species rather than to any other. It has sone been recorded as 
occurring in New South Wales, by Prof. De Koninck.' The best 
of the specimens (a tail) before me ‘possesses all the characters of 
E. punctatus, the numerously ribbed axis, and smooth central 
space only occupied here and there by the tubercules, in this case 
four in number. I find on examining a series of specimens of this 
species in the British Museum that the number of these tubercules 
varies much in different individuals. Some from Dudley have 
: four, as in the epee case, others have five, and again six, whilst 
Salter describes a as seven in Z. punctatus. Furthermore, 
the latter states that ‘aaah tubercule-bearing ring is separated by 
four other rings; but I find that this character also varies quite as 
much as the actual pees of tubercules, two and three separating 
them oo as often as fou 
—Bombala, in a highly fossiliferous shale of Silurian age. 
Class—POLY ZOA. 
Genus PrororreTerors. De Koninck, 1877. 
and size of the meshes. At one point the fenestrules are quite 
oval, at another almost square, and fragments would well pass for 
distinct species. It is probably identical with that fi red 
Prof. De Koninck as sdemate ampla (Lonsdale), but differs 
to some extent from the typical illustrations given by Lonsdale 
Loc.—Singleton, in a light-coloured micaceous sandstone 
S 
ards 
the anterior and posterior margins are convexly rounded, reece < 
r the anterior than the posterior end. Imm 
below th ths tice: line are visible the elongated cavities left the - 
relow the hinge-line are visible the elongated caviith 
Foss. Pal. Nouv.-Galles du Sud. 
