350 Mr. F. Bates's descriptions 
Styrus elongatulus, n. sp. ? 
Elongate-ovate,blackwitha chocolate tinge, tlie thickened 
edges of prothorax, and costffi on elytra, shining : head 
coarsely, and slightly reticulately, punctured, impressed 
on the crown, front declivous, and furrowed down the 
middle ; epistomal suture very distinct, broad : prothorax 
a little wider (in its widest part) than long,* densely 
— except on the guttered margins — punctured, a small 
elongate space on the disk smooth ; two shallow foveje at 
each side the disk, and a long, transverse shallow impres- 
sion near the base : el}"tra obovate, convex, sinuously con- 
tracted and narrowly rounded at apex ; each with three 
distinct, strongly elevated, slightly undulate costae, crenu- 
late at top ; these put forth irregular lateral branches, 
which ordinarily extend but half across the intervals, and 
are sometimes only represented by detached tubercles ; the 
suture is also costate, and becomes iiTcgularly bifurcate 
before the scutellum : there is also a finer submarginal 
costa; the 1st and 3rd costte are united near the apex and 
enclose the 2nd ; the spaces between these elevated lines 
are flat, or slightly concave, and are sparsely studded with 
well-defined punctures : legs pitchy ; underside dull black, 
distinctly — but finely and not closely — punctured; the 
head beneath, and flanks of prothorax, more strongly punc- 
tured. 
Long 8^ lin. ; lat. elytr. 3^ lin. 
Hab. — Queensland. Two examples. 
Amphianax, n. g. 
Sides o£ suhmenium not dentiform: mentum and labium 
trapezoidal, convex : j)alpi wanting : head rather short, 
deeply immersed in prothorax, vertex convex : antennary 
orbits prominent, projecting laterally beyond the eyes, a 
little reflexed, and thickened at the edges ; epistoma \exj 
short, fi'ont angles slightly bent down and slightly rounded ; 
apex broadly emarginate, the sutural line faint at the 
middle : labrum strongly transverse, convex, broadly emar- 
ginate in fi'ont, the hinge broadly \asible : eyes large, reni- 
foiTn : prothorax transverse, a little depressed, strongly 
arcuate-emarginate — and very finely margined — in front, 
broadest behind the middle, broader at base than at apex, 
* Maolccay gives it as rather longer than wide, and without actual ad- 
measuremeut it does appear to be so. 
