^fr. I), Sharp 0/1 the Elatcrldas of New Zealand. 405 



A'»», mososterni foveas latcribiH crassis, fortitor elevatis, fere hori- 

 zontalibus. 



Tills species is a very distinct one, not likely to be con- 

 founded with any other. The sexual disparity in the struc- 

 ture ot" the nieSDthoracic cavity is higlily interesting, and is 

 such as in other cases is considered characteristic ot" distinct 

 genera ; in the female the tarsi also are stouter than in the 

 male and their lobes more distinct, the antennas also are less 

 elongate. 



A pair of this species has been sent me from Tairua by 

 Captain Broun as No. 190. 



9. Elater cinctiger, White. 



E. ferrugineus, prothnrace elytrisquc versus latera vitta lata tes- 

 tacea ; parce bre\'is.siine(juo pubcscens ; elytris ad apicem acutis, 

 e\*identer scijualiteniue striatis, striis fortiter jjunctatis, iuter- 

 stitiis sparsim piinctatis ; subtus crcbre punctatus, mesostenii 

 fovcte lateril)us baud elevatis, obliquis, nuUo modo horizontalibus. 



Mas angustulus, tliorace elytris angustiore, angulis posterioribus 

 divergentibus, medio nitido. Long. 10-13 m.m., lat. fere 2*7 m. m. 



Fern, latior, thorace elytris latiore, angulis posterioribus vix diver- 

 gentibus, medio fortiter punctato. Long. 13-14^ m.m., lat. 

 fere 3 m. m. 



The sexual discrepancies are here again very remarkable ; 

 the greatly developed thorax of the female gives it the aspect of 

 a minute Chalcolepidius. 



Sent from Auckland and Tairua by Messrs. Lawson and 

 Broun, but rare ; the female especially rare. The species is 

 probably confined to the Northern Island. 



Group 2. — The species nos. 6, 7, 8, and 9 exhibit tlie fol- 

 lowing structural characters : — 



Forehead curved in front, very distinctly separated from the 

 clypeus, which is slightly unfolded, but still subperpendicu- 

 lar ; antennal spaces more or less extended inwards, but their 

 boundaries ill defined, the labrum only attached at the sides to 

 the clypeus, so that in the middle there appears to be a kind 

 of space or gap over the labrum : the limits between the fore- 

 head and clypeus in the middle ill-defined. Joints 2 and 3 

 of antennfc not much developed ; joints 4-10 not serrate; ap- 

 pendicular extremity of 11th joint short and but little marked. 

 Prosternal sutures duplicate. Mesosternal cavity and its 

 suture with the nietasternum variable. Coxal plate of hind 

 coxa short, and gradually and sliglitly longer towards the 

 trochanter, so that tlierc is no limit between the trochanteral 



Aim. ct- May. N. Hist. Scr. 4. Vol. xix. 28 



