226 INSECTS OP THE CAIRNS DISTRICT, NORTHERN QUEENSLAND, 



very short ; the 6th, 7th, and 8th forming the club. In the 

 genus which I now propose to name Platydesmus, the Ist joint of 

 the antennae is large and abruptly swollen at the tip ; the 2nd is 

 globular ; the 3rd, 4th, 5th and 6th are very short, and the club 

 which is more elongate is composed of the 7th, 8th and 9th joints. 

 In no other respect does it differ from the characters given to 

 Scitala. 



23. Platydesmus sulcipennis. 



Oblong oval, black, sub-opaque ; elytra dull red. Head densely 

 and roughly punctate, the clypeal suture indistinct, the clypeus 

 in fi'ont rounded and narrowly recurved, the palpi and antennae 

 piceous, the club of the latter as long as the rest of the antennas 

 and slightly sinuate. Thorax transverse, a little convex, thinly 

 punctate, the anterior angles acute, the sides a little rounded, and 

 the base wider than the apex and a little rounded. Scutellum of 

 rounded triangular form, and dull I'ed colour. Elytra a little 

 •wider than the thorax, and more than twice the length, slightly 

 rounded and ampliated on the sides, broadly rounded at the base, 

 deeply striated, the striae punctate, and the interstices conve:^ and 

 very sparingly minutely punctate. Legs strong, the hind tibiae 

 broad and spinose ; the fore tibiae tridentate. Body beneath 

 piceous and slightly cinereo-villose. 



Length, 4 lines. 



ZTafe.— Mossman River, Cairns. 



24. Platydesmus flavipennis. 



A larger and more convex species than the last, and very nitid. 

 Head black, thinly punctate, the clypeus densely punctate, 

 rounded as in the last species, with the suture more distinct, the 

 palpi and antennae piceous red, the triphyllate club of the latter of 

 great length and much curved. Thorax thinly punctate, trans- 

 verse, in form like the last. Scutellum rounded behind. Elytra 

 about the width of the thorax at the base, a little ampliated 

 towards the apex which is very round, about three times the 

 length of the thorax, of a pale luteous colour, lightly striated, the 



