psi:r;APHiDAi;. 169 



bi-eadtli of tlie tliorax, gently luinowed towards the base; witli distinct 

 sutural striae, 'and a few shallow, indistinct punctures Avhich arc almost 

 seriate. Hind-body as broad as the eltyra. but shortei- and much 

 darker. 



Legs moderately ehmgate, posterior tiliiae a little arched below the 

 middle. 



Antennae about as long as the head and thorax; basal joint stout, its 

 length scarcely double the breadth, the next subjuadrate, joints 3-6 of 

 about equal width, the 4th, however, hardly longer than broad, 7th and 

 8th transverse, the latter evidently the shorter; 9th abruptly enlarged, 

 subquadrate, oblique at the extremity, rather longer on the outer side 

 tlian the inner, with a minute spinifoi-m appendage rieai' its inner ex- 

 tremity; lOth rather larger, rounded ontwnrdly, with a small lol)e-like 

 dilatation at tlie inner side of its base. 



Underside dark red, with some fine yellowish pubescence. Meta- 

 sternum bioadly and deeply depressed along the middle; 2nd ventral 

 vSegment witli a pair of large prominences extending nearly the whole 

 length, these are testaceous, finely ribbed and flattened on the surface, 

 but somewhat tilted towards each other; intermediate segments incurved 

 behind and very short in the middle; 5th widely emarginate behind and 

 impressed across the middle; 6th large, transversely oval, finely yet 

 (|uite distinctly punctate. 



The rather elongate body, large terminal joints of tlie antennae, and 

 peculiai' piominences on the 2nd ventral segment arc its distinctive 

 characters. 



(J. Length, IJmm.; breadth, |nun. 



liroken River, Canterbury. Two specimens, numbeied 5170 and 

 5172 respectively, were sent to me several years ago by Mr. J. H. Lewis, 

 but as he informed me that he had also sent them to Dr. SharjD I 

 declined to describe them then. As Dr. Sharp api^arently has not named 

 this species, I have now described it. Exactly the same remarks are 

 applicalile to tlie following species. 



3535. Byraxis anisarthra sp. nov. 



Sanguineous, nitid, legs fusco-rufous, tarsi and iial])i infuscate; 

 sparingly clothed with slender, elongate, erect greyish hairs on the wing- 

 cases, more thickly on the abdomen with decumbent ones. 



Head as long as the thorax but rather narrower, smooth, intcrocular 

 foveae obsolete. Thorax of about equal length and breadth, widest and 

 I'ounded at the middle, without sculpture. Eltyi'a oblong, nearly double 

 the length and breadth of the thorax, their sides slightly rounded, with 

 well-marked sutural striae, and a few^ fine, indistinct, scattered punc- 

 tures. Hind-body rather narrower, and evidently shorter than the 

 wing-cases, its basal segment slightly longer than the next, the others 

 deflexed. Legs slender, posterior tibiae slightly arched and thickened 

 near the extremity. 



Antennae shorter than the head and thorax, with short groyi.sji pulDes- 

 cence ; Ijasal joint thick, not twice as long as broad, 2nd supipiadrate, 

 only very slightly longer than broad, 3rd considerably smaller, obconical, 

 4th very short, twice as broad as the 3rd; 5th oblong, enormously deve- 

 loped, a third of tlie entire length, apparently with a basal fovea under- 

 neath ; joints 6-8 small and transverse; 9th quadrate, doul)le the width 

 of tln' preceding one; 10th of the same bi-eadth as the penultimate but 

 a third longer, botli of these togetlier smallei- than the 5th. 



