12-2 



Head moderate, dusky ; eyes large and prominent ; antennaj dusky yellow, robust, 



with tlie fourth and sixth joints enlarged. 

 Thorax moderate, ovally rounded and slightly reflexed in front, marked with minute 



remote punctures, with the interstices faintly alutaceous and very shining, 



basal margin deeply sinuated, with the angles much produced and very acute. 

 Scutellum large, rounded, and punctured. 

 Elytra not broader, but more than one-half longer than the thorax, widest at the 



shoulders, dark castaneous, closely and deeply asperate, sutural stria deep, 



sides margiiu-d nearly straight, extremities very broad, moderatelj- rounded. 

 Abdomvii with the pj-gidium slightly exposed. 

 Legs modernte, bright yellow. 



Under parts castaneous, prothorax and terminal segments of the venter yellow. 

 Differs from S. lateralis in its shorter and broader form, and robust antennaj, with 



the fourth and sixth joints incrassated. 

 Habitat, Australia. One specimen only, found near Hobart Town, now in the 



collection of the British Museum. 



Sericoderus pallidulus. 



S. pallidulus, Eeitter, Mitth. Miinch. Ent. Ver. i. p. 127, 1877. 



L. c. /irVc ^i'i- = ■75-'87 mm. -Obconicus, modice convexus, nitidus, rufo- 

 testaceus, pilis aureis vestitus ; pronolo brevi, semiovali, antice sat attenuato, 

 indistinctisbime punctato, interstitiis uitidissimis, margine anteriori baud retiexa, 

 margine basali scutellum versus valde producta, angulis latis, productis et acutis ; 

 eli/tris pronoto plus quam sesqui longioribus, parum angustioribus, ad humeros 

 latissimis, modiee et sat confertim punctatis, interstitiis alutaceis, ad suturam 

 leviter impressis, lateribus rectis, baud marginatis, apicibus ad suturam valde 

 rotundatis ; pj-gidio solo exserto, flavo ; pedibus laete fiavis ; antennis flavis, clavis 

 infuscatis. 



Head small, dusky ; eyes black, small, and prominent ; antennae short, yellow, with 

 the club dusky. 



Thorax short, semioval, narrowed in front, indistinctly punctured, with the inter- 

 stices very shining, anterior margin not reflexed, basal margin much produced 

 towards the scutellum, with the angles produced, broad and acute. 



Scutelluin broad, triangular. 



Elytra more than once and a half longer, and rather narrower than the thorax, 

 broadest at the shoulders, moderatelj' but rather closely punctured, with the 

 interstices alutaceous, with a faint impression on each side of the suture, sides 

 straight not margined, extremities much rounded towards the suture. 



Abdomen yellow, with the pygidium only exposed. 



Legs moderate, bright j'ellow. 



Under parts castaneous, with the mouth, coxae, and apex of the venter yellow. 



Differs from S. lateralis in its smaller size, closer sculpture, and separately rounded 

 extremities of the elytra. 



Habitat, Australia. Found near Adelaide. 



Sericoderus subquadratus. 



Trichopteryx subquadratum, Nietner, Ann. and Mag. Nat. Hist. (2) xix. p. 374, 1857. 



L. c. /^j-tIi lin. = •63-"75 mm. — Subolongus, maribus postice attenuatus, valde 

 convexus, nitidus, ferrugineus, pronoto dilutiori, pilis aureis sat dense vestitus ; 

 pronoto modico, antice circulariter rotundato, fere impunctato, flavescenti, niti- 

 dissimo, margine basali modice siuuata, angulis acutis productis ; cli/tris brevibus, 

 maribus postice attenuatis, pronoto parum longioribus, baud latioribus, ad humeros 



