BY ARTHUR il. LEA. 397 



but very minute ijuueturos. Front legs sliohtly longer than hind ones. Length, 

 3.25 mm. 



Hab. — Queensland: Brisbane (A. J. Coates), unique. 



The three apical joints of the club are missing from the type, but the two 

 basal ones are of normal appearance, the scutellar lobe is acute, slightly elevated 

 and not notched. The type at first looks like a small female of D. concolor, but 

 has very different punctures and jaws; the prothorax is less narrowed in front 

 than D. subannatus, the eyes are slightly more distant, and the dypeus is not 

 subdentate on the sides; the protlioraci<' inuictures differ, lioth on the middle and 

 sides, from those of D. puncticnllis and tlie labrum is reddish, etc.; the elytra are 

 not shagreened as in D. costatus. 



DlTROPIDUS CAERULEUS, U . Sp . 



c?. — Deejj blue, under surface almost black, front of elypeus, labrum and 

 basal half of antennae (upper surface of basal joint infuscated) reddish. Under 

 sui'face and legs sparsely clothed, head almost glabrous. 



Head with dense, sharply defined punctures. Eyes widely separated. Pro- 

 thorax mure tlian twice as wide as the median length, sides strongly rounde<l ; 

 with fairly dense and rather small, but sharply defined punctures, becoming 

 slightly smaller on sides. Elytra briefly suboblong, sides gently narrowed pos- 

 terioi'ly; with rows of small punctures, becoming slightly larger and set in dis- 

 tinct striae on the sides; interstices faintly wrinkled, and with very small punc- 

 tures. Front legs slightly longer than hind ones. Length (d', S), 2.75 — 3 mm. 



?. — Differs in being more robust, eyes slightly more apart, elytra less nar- 

 rowed posteriorly, front legs no longer than liind ones, and abdomen with a large, 

 round, deep, apical fovea. 



Hab. — Western Australia: Rottnest Island and Vasse River; New South 

 Wales: Sydney (A. M. Lea). 



A beautiful, deep blue species, with unusually small seriate punctures on the 

 elytra; the head occasionally has a slight greenisli or coppery-green gloss, and two 

 specimens have the sides of the elytra, from some directions, distinctly coppery, 

 occasionally the upper surface is almost purple; the tips of the tibiae and the 

 extreme base of the front femora are sometimes reddish. It is more conspicu- 

 ously blue than D. tropicus, eyes (sex for sex) more widely separated, protlioracie 

 imnctures larger, seriate ones of elytra much smaller and the interstices faintly 

 wrinkled; structurally it is close to D. ch/pealis, which also has the elypeus red. 

 t)ut tlie colour and punctures are different; it has the sharply defined inter-ocular 

 punctures of D. frontalis, D. tnelasomus, D. seminulum and D. sobrinus, but differs 

 from all of these in being shorter and broader, prothorax with sides more strongly 

 narrowed in front, and punctures denser and stronger. The median line of the 

 bead is very feeble at the base, and on some specimens is rejiresented by a sliallow, 

 almost circular depression in the middle, but from some specimens it is altogether 

 absent . 



DlTROPIDUS CORIAC'EUS, U . Sp . 



c?.— Black, with a slight bronzy gloss, basal half of antennae obscurely red- 

 dish. Glabrous. Upper surface shagreened. 



Head with very minute punctures, median line very feeble. Eyes rather 

 widely separated. Prothnra.v about thrice as wide as the median lena-fh, sides 



