241 



etc. To the naked eye the upper-surface has a dingy-greyish 

 appearance. On the elytra the posterior declivity has denser 

 and paler scales than elsewhere, but the tubercles are crowned 

 with sooty scales. On the prothorax there are six fascicles, of 

 which the outer median ones are smaller and paler than the 

 others. There are no distinct punctures on the prothorax, 

 although most of its derm^ is exposed. The four large elytral 

 tubercles are of even size, the smaller ones between them are 

 crowned with scales, rendering them fairly conspicuous; there 

 are also a few tubercular swellings on the sides. 



POROPTERUS CONSTRICTIFRONS, n. Sp. 



Black ; antennae, tibial hooks, and claws more or less red. 

 Irregularly clothed with muddy-brown and ashen scales, a 

 few almost black; each elytral puncture with one wide scale. 



Head with minute punctures and very finely shagreened ; 

 ocular fovea small but clearly defined. Rostrum rather long^ 

 and thin, slightly dilated to apex, with numerous and usually^ 

 clearly-defined punctures. Antennae inserted about two-fifths 

 from apex of rostrum, second joint of funicle distinctly longer 

 than first. Prothorax about as long as wide, sides strongly 

 rounded, apex produced but not bilobed; with four rather 

 large round tubercles across middle, the outer ones smaller 

 and nearer the apex than the inner ones, towards base with 

 some smaller subobsolete ones; subapical constriction very 

 deep and continuous across summit. Elytra elongate-ovate, 

 widest at about basal third; with rows of large punctures 

 becoming smaller posteriorly; third interstice with Wo fairly 

 large tubercles, one at about basal fourth, the other crowning 

 the posterior declivity, which is rather long ; with several 

 feeble tubercular swellings elsewhere ; with some shining 

 squamiferous granules on and near suture and on tubercles. 

 Mesosternal receptacle U-shaped, walls thin but rather stouter 

 at base than elsewhere. Ahdomen with straight, deep sutures 

 to three middle segments. Legs long and thin; posterior 

 femora passing apex of elytra; third tarsal joint wide and 

 deeply bilobed. Length, 11 mm.. 



TIah. — North Queensland (Blackburn's collection). 

 Type, I. 1296, in South Australian Museum. 



The subapical constriction is deep and continued from 

 side to side, causing the prothorax to appear as if a wire had 

 been bound across it when soft. This character will readily 

 distinguish it from rhyticephaliis. In many species of the 

 genus the constriction is deep at the sides, but not continuous 

 across the summit. The type appears to be somewhat abraded, 

 and is probably a female. 



