BY ARTHUR M. LEA. 611 



/. evanida. Prothorax with moderately numerous, very distinct, 

 and rather large (very coarse for the genus) punctures of even 

 size, and evenly distributed, except that at sides they are more 

 crowded than on the disc. Elytra impunctate (except for a 

 series at base, and a few small ones at extreme apex); highly 

 polished, and entirely without strife. Length 2^ mm. 



Hah. — N. Queensland : Endeavour River, Sue Island(Macleay 

 Museum). 



The character of the prothoracic punctures, and entire absence 

 of elytral striije will readily distinguish this species from all the 

 Australian, and most of the New Guinea species. 



Idotasia albidosparsa, n.sp. 



Black, shining. Upper surface of posterior femora with a 

 moderately distinct patch of snowy scales; legs elsewhere, and 

 the rostrum very indistinctly squamose. 



Head with veiy indistinct punctures; with or without a feeble 

 shining space between eyes; these more decidedly lateral, and 

 more widely separated than usual. Rostrum smooth, without 

 raised lines; sides seriate-punctate, middle finely, apex rather 

 densely punctate. Prothorax with evenly distributed and minute 

 punctures except that on the lower flanks (especially anteriorly) 

 they become rather large. Elytra without punctures, except a 

 shallow one marking the base of each of the almost invisibly 

 impressed strise, and a few small ones at extreme apex. Legs 

 as in /. evanida. Length 3 mm. 



Hah. — N. Queensland: Endeavour River(Macleay Museum). 



The rostrum, in three specimens (possibly all females) under 

 examination, is entirely without elevated lines. The punctures 

 on the disc of the prothorax are much smaller than in any other 

 species here described. It is possibly close to, but evidently 

 distinct from, /. salubris from New Guinea. 



Ampagiosoma, n.gen. 



Head not concealed by prothorax; ocular fovea moderately 

 distinct. Eyes widely separated, moderately coarsely faceted. 



