592 Records of the S.A. Museum 



and not continuing the general convexity (as on that speciesj but directed 

 obliquely outwards; the tips being alike on the nine specimens (including the 

 varieties described below) under examination. I know of no other species having 

 similar tips. The intercoxal process of the prosternum is less deeply notched than 

 on 1>. daz'isi and in places is transversely strigose. On some females the pro- 

 thoracic punctures are so small and close together that the surface appears almost 

 shagreened : the seriate punctures on the elytra are really unusually small, but 

 owing to waterlogging appear to be almost or quite as wide as the interstices. 

 From above the front angles of the prothorax appear to be widely rounded off, 

 but they are really rectangular. (Jn several females the base of the abdomen is 

 reddish. A femak, from Kalgoorlie (F. H. du Boulay), has the elytra reddish, 

 except for very narrow, black, basal, sutural and apical edgings, its metasternum, 

 base of abdomen, and legs (except tarsi) are also reddish. A male, from Murray 

 Bridge, has the elytra ( except that the basal third is obscurely diluted with red) 

 and metasternum black. 



DITROPIDUS MARGINIPENNIS sp. nov. 



9 Bronzy; clypeus. labrum, basal half of antennae, palpi, sides and apex 

 of elytra, umler-surface (part of abdomen infuscated), and legs (tarsi infus- 

 cated) flavous. Under-surface and legs with sparse, white pubescence, head 

 almost glabrous. 



Head witli dense and small punctures, many of which are obliquely con- 

 fluent : median line rather wide but feeble. Eyes widely separated. Prothorax 

 at base about twice as wide as the median length ; with numerous small, btit 

 rather sharply defined punctures, becoming somewhat denser on sides. Elytra 

 suboblong ; with rows of fairly large punctures, on the sides set in deep striae. 

 Abdomen with a large, round, deep, apical fovea. Length. 3-3'25 mm. 



//a&. South Australia: Mount Lofty (J. G. (). Tepperj. Type, L 4445. 



A second specimen differs from the type in having the pale portion of the 

 head extended as a triangle almost to the base, the prothorax with a small spot 

 (jn the scutellar lobe, and an oblique vitta on each side of the base reddish, and 

 less of the abdomen infuscated. At first glance the species appears fairly close 

 to D. apiciftavus, but the pale portion of the elytra extends to the base on each 

 side, the sterna are also entirely pale, and there are slight dift'erences in the head 

 and |)rothorax ; D. xantluuus is a less oblong species, with sides of prothorax 

 densely strigose. The sides and apex of the prothorax. from above, appear to 

 form a perfect semicircle. 



N 



