56 
MEMO IBS OF THE QUEENSLAND MUSEUM. 
however, lias more than twice as many basal radii as L. johnii, in scales of about 
the same size. The N comcenis has minutely beaded basal circuli, and both the 
species of Lutianus show exactly the same feature. 
The scale of Kuhlia ruposlris C. & V. (Kuhlikhe), from Mauritius, is 
extremely like that of Lutianus, except that it has more prominent laterobasal 
angles, and the submarginal elements of the ctenoid patch are somewhat longer. 
They are distinguishable, hut from the scales alone I should have supposed them 
to be closely allied members of one family. 
SPARIDJE. 
Pagrosomus auratus Forster. Scales about 19 mm. long and 21 broad ; 
subquadrate, with convex (bulging) sides, and crenate lower margin; nucleus 
above the middle; about 9 distinct basal radii, arranged fanwise; basal circuli 
minutely beaded; ctenoid patch large, but the elements mostly ill-defined, those 
near the margin distinct, and very short, some broader than long; marginal 
teeth sharply pointed. Sparsely scattered over the ctenoid patch are black dots 
or minute streaks, which appear under the compound microscope to be little 
canals with round openings. This last feature strongly suggests the perforations 
of the same region in Beryx. 
Sparus sarba Forskal. Scales reddish, very broad, about 7y? mm. long 
and 1014 broad; basal radii about 14, widely spreading. Structure as in Pagro- 
somus, but shape different. 
Lethrinus harak Forskal. Scales about 6y 2 mm. long and broad, thus 
differing from Pagrosomus in the opposite direction from Sparus. Basal radii 
about 15. Structure as in the other genera, with the same scattered perforations 
in the ctenoid area ; but the subapical ctenoid elements are quite different, being 
elongated, consisting of a stick-like central rib, with a margin of nearly equal 
width on each side of it. 
I find that the scales of Dentcx vulgaris , from England, show scattered 
perforations in the ctenoid area, just as in the Australian Sparidie. The ctenoid 
patch of Dentex has a honeycomb-like pattern. 
TIIERAPONIDiE. 
Therapon jarbua Forskal. Boulenger lists Thcrapon as a genus of 
LutianiiiEe. The scales are subquadrate, longer than broad; length about 
2i4 mm., breadth about 2; sides parallel; laterobasal corners rectangular; 
nucleus above middle ; about 9 strong basal radii ; lower margin scalloped ; 
basal circuli minutely beaded; lateral circuli rather coarse; ctenoid patch well 
developed; apical teeth sharp; subapical elements of ctenoid patch short; the 
ridge or keel running dow r n the teeth is continued on to the elements below 7- , so 
that the ctenoid area presents a series of radiating ridges. 
