OF NEW ZEALAND. 293 



Elaterites of Candeze ; the prosternal sutures are obscurely or not dupli- 

 cate and are scarcely open in front ; the mesosternal cavity is broader 

 than in Lomemus ; and though the posterior part of the cavity is acumi- 

 nate and ill-defined, and does not reach nearly to the suture, yet its 

 plane of direction is less horizontal. The femoral portion of the hind- 

 coxal plate is more developed, so that there is a quite gradual passage 

 from it to the longer trochanteral portion. 



517. M. COnvexuS, Sharp ; Ann. Mag. Nat. Hist., May, 1877. 

 M. niger, nitidus, evidenter pubescens, convexus ; prothorace parcius 

 minus fortiter punctato, angulis posterioribus leviter divergentibus ; 

 elytris stria suturali integra, in dimidio basali seriebus punctorum, inter- 

 stititiis subtiliter punctatis. 



Long., 9-9^ mm. 



Mas. Antennis nigris, crassiusculis, intus fortiter serratis, articulis 

 secundo et tertio brevissimis ; abdominis apice vix rufescente. 



Fern. Antennis fusco-rufis, tenuioribus, intus leviter serratis, articulis 

 secundo et tertio minus abbreviatis, conjunctim quarto paulo brevioribus ; 

 abdominis apice rufescente. 



This species may be readily distinguished from the preceding ones 

 by its more convex form, and by the apical half of the elytra being 

 quite free from striae. 



Discovered at Auckland by Mr. Lawson. Recently an individual 

 has been sent me from Tairua by Captain Broun, with the information 

 that the species occurs on Leptospermum, and is extremely active and 

 difficult to capture. 



518. M. vicinus, Sharp; Ann. Mag. Nat. Hist., May, 1877. 

 M. niger, nitidus, evidenter pubescens, convexus ; prothorace parce sub- 

 tiliter punctato, angulis posterioribus vix divergentibus ; elytris stria 

 suturali integra, in dimidio basali seriebus punctorum, interstitiis sub- 

 tiliter punctatis. 



Long., 6J mm. 



The only individual I have seen is a male ; it is excessively similar 

 to Mecastrus convexus, but is a good deal smaller, and has the middle 

 coxse separated by a considerably narrower interval. 



Westland. 



519. M. discedens. Sharp ; Ann. Mag. Nat. Hist., May, 1877. 

 M. niger, sat nitidus, evidenter pubescens, sub-depressus ; prothorace 

 crebre fortiter punctato, angulis posterioribus leviter divergentibus j 

 elytris leviter striatis, striis ad apicem vix distinctis, interstitiis crebre 

 subtiliter punctatis. 



Long., 7-9 mm. 



Var. Elytris versus humeros plaga testacea. 



Mas. Antennis crassiusculis, articulis secundo et tertio brevissimis, 

 articulis 4-10 intus fortiter-serratis. 



Fern. Antennis tenuioribus, articulis secundo et tertio brevibus, 4-10 

 intus subserratis. 



