154 



but seven others have the prothorax immaculate. The elytral 

 punctures become very small posteriorly, but on some speci- 

 mens each is surrounded by a watery ring, so that, at a glance, 

 the punctures appear to be large and of almost even size 

 throughout, but when the elytra are examined so that the 

 apical punctures are clearly visible they are seen to be very 

 sm.all. 



Rhyparida mediovittata, n. sp. 

 PL vii., figs. 50 and 51. 



Flavous ; head and prothorax reddish-fiavous, the latter 

 with a conspicuous black spot on each side ; each elytron with 

 a black irregular vitta, extending along the middle from near 

 the base to about the apical fourth, the two sometimes con- 

 nected by a narrow fascia across the basal fifth ; tarsi and 

 knees usually slightly infuscated. 



Head shagreened ; with very indistinct punctures, except 

 on clypeus, where they are fairly dense and sharplv defined ; 

 with a narrow medio-frontal impression, touching the rather 

 ill-defined clypeal suture. Eyes large, prominent, and rather 

 Avidely separated. Frofliorax across middle almost thrice the 

 median length, all angles armed ; with minute and not very 

 dense punctures, mytra parallel-sided to beyond the middle, 

 distinctly wider than prothorax; with rows of punctures 

 of moderate size, becoming very small posteriorly : interstices 

 with very minute punctures. Flanks of vrosternum feebly 

 striated about base only. Femora edentate: claws feebly 

 appendiculate. Length, 4-4^, mm. 



//6r 7;. —North-western Australia: Fortescue River and 

 Derby (W. D. Dodd) ; Northern Territory: Batchelor (G F 

 Hill's No. 237). Type, I. 3072. 



A small and very conspicuously marked species ; each 

 vitta sends out an inner spur at the basal third, and on three 

 of the twelve specimens before me these meet at the suture ; 

 on these specimens also the suture is narrowly infuscated. Of 

 the other species with the prothorax conspicuously bimaculate, 

 maciiUcoUis is much larger, more convex, elytral markings 

 very different, and hind femora minutely dentate. Brevilineafa 

 is also much larger, and with very different elytral markings. 

 The claws, except on very close examination, appear to be 

 quite simple. 



Rhyparida insulicola, n. sp. 

 PI. vii., fig. 52. 



Flavous; some small spots on upper-surface and parts of 

 under-surface black. 



Head with well-defined punctures at sides of base, absent 

 between there and clypeal suture, and dense and well-defined 

 on clypeus ; with a narrow and deep medio-frontal impression. 



