Sl'XCHONNUS. CON DERIS. 59 



Var. Thorace, pectorc femorumque basi rufo-flavis. 



Hub. Torres Straits, Batchian, Aru I. 



The thorax has seven areolets, hut usually the mesial lanceolate 

 diic only is distinct ; the surface is rather roughly punctured, except 

 the posterior part of the disk. Each elytron has eight costse, the 

 alternato ones rather narrower and less elevated; the punctures in 

 the lines are distinct and rather strong. 



The type specimen and other specimens from Australia have the 

 disk of the thorax black. The other examples, from Aru I., Batchian, 

 and Torres Straits, have the thorax entirely reddish yellow, except 

 one example from Aru I., which has a little dusky mark. These 

 specimens differ, moreover, in having the sterna and base of the 

 femora also reddish yellow. 



The males have the antennae pectinate. In the females they are 

 only dentate (Plate XIV. fig. 10). 



SYNCHONNUS. 



Rostrum none. Antennae dentate. Thorax with a lozenge- 

 shaped mesial areolet, which extends from the base to the anterior 

 margin ; from each lateral angle of this areolet there is a straight 

 carina, which extends to the middle of the side ; by this means the 

 surface is divided into five areolets. Elytra with four costse, the 

 interstices irregularly punctured. 



This genus is proposed for the reception of a single Australian 

 species. 



Synchonnus clientulus. 

 (Plate XV. fig. 2.) 



Porrostoma clientuluru, Waterh., Trans. Ent. Soc, 1877, p. 81, pi. ii. 

 figs. 78-81. 



Ater ; palpis basi obscure testaceis, thorace quinqueareolato ; 

 elytris quadricostatis, flavis, apice nigro. $ . Long. 4 lin. 



Hub. Moreton Bay. 



Elytra of a dull rusty yellow, pubescent, with the apical fifth 

 black, the black not advanced on the suture : the second of the four 

 costse only well defined and extending to the apex, the others \< sa 

 distinct : the interstices rather irregularly but moderately strongly 

 punctured, the punctuation somewhat obscured by the pubescence. 



CONDERIS. 



Rostrum none. Antennse strongly dentate. Thorax with five 

 distinct areolets. Elytra each with four costae ; the interstices with 

 a line of indistinct punctures on each side, or with a double row of 

 quadrate punctures. 



Calopteron signicolle, Kirsch, is the type of this genus. 



