228 NOTES ON" SOME AU.STRALIAX TK.VEIiRIOXIDAE, 



Two examples examined show a species rather closely allied to the Queens- 

 land species P. arcanus Pasc, having rather similar elytral sculpture, but the 

 form is more regiUarly elliptic, the foliation less wide, the sides of prothorax 

 feebly sinuate. In I'. arcanuK the lines ot nodules are continuous throughout, ex- 

 cept for the costate 3rd interval. 



Type (c?) in the \Yesteru Australian Museum, Perth. 



Pterohelaeus nodicostis, n.sp. 



Widely ovate, convex, reddish brown, head and pronotum black, paliii and 

 legs red, antennae wanting. Head and pronotum very finely punctate, eyes 

 moderately distant (as in P. piceiis Kii-by). Prothorax transverse, foliage mar- 

 gins wide and horizontal, anterior angles widely rounded, posterior angles pro- 

 duced, but widely blunted at apex, medial line faintly indicated. Ehjtra of same 

 width as prothorax at base, sides sub-parallel to halfway, widely rounded be- 

 hind; very convex, foliate margins wide and horizontal, little narrowed behind; 

 disc with 17 rows of punctures, besides a short scutellary row ; all, except this and 

 extreme lateral row, in pairs between costate intervals; the seriate punctures tine 

 near suture, much finer than in piceics, larger towards sides, there as large as in 

 piceus; the suture raised, the 1st and 3rd costae flattening out on basal half, the 

 rest earinate-crenulate on basal half; all costae nodulose on apical half, a single 

 row of nodules forming a crest on each raised inter\-al. Underside lightly 

 strigose, apical segment punctate. Dimensions: 21 X 13} uim. 



ffab.— Moree District, N.S.W. (Mr. P. C. Morse). 



A single specmien lately sent by its captor, is a very distinctly differentiated 

 member of IMacleay's Sect. 1.2. Species of broadly ovate form, and largely 

 expanded margins to both thoi-ax and elytra. It is the only one besides arcanus 

 Pasc, raucus Blackb., and interrupt us (supra) in which the elytra have grannies; 

 arcanus is, however, much more widely oval, with the wide sutnral interval con- 

 fusedly punctate, and the suture itself nodulose inter multa alia: rattcus has a 

 totally different sculpture. In size and foliation it is near piceus Kirby, hut i5 

 more convex. It differs from interruptus (stipra). which has the costae clearly 

 interrupted, leaving island nodules. 



Type in Coll. Carter. 



Pterohelaeu.s oblongus, n.sp. 



Elongate parallel, whole surface rather nitid black, legs very nitid ; antt nnae 

 — especially apical half — and tarsi reddish. Head finely punctate, eyes sei)ar- 

 ated by a space '>f about half the diameter of one; antennae with third joint as 

 long as 4th and 5th combined, 2nd — Cth linear, 7th obconic, 8th — lOtli enl.ii'ged, 

 ovate, 11th elongate ovate. Prothorax (4X9 mm.), emarginate at apex, bisinu- 

 ate at base, widest a little in front of base, thence converging lightly to base, 

 more strongly and arcuately to apex; base nearly twice as wide as apex (9 :5) ; foliate 

 margins wide and slightly concave, extreme margin reverted: anterior angles 

 prominent but bhuitly rounded, posterior sharp and sub-rectangular (feebly fal- 

 cate) ; disc nearly smooth, very minutely punctate, medial line , dearly impressed; 

 two deep triangular foveae at base. ScuteUum very large, curvilinear triangular. 

 Elytra slightly wider than prothorax at base and about four times as long, sides 

 parallel for the greater part, margins very narrow, slightly widened at the shoul- 

 ders, there forming an obtuse angle; disc coarsely striate-punctato, with about 18 

 sub-obsolete striae, including a short scutellary and a lateral row nf larger punc- 

 tures, seriate punctures round and deep, l)ecoming finer at shoulders and apex, 



