Mr. D. Sharp on the Elateridas of New Zealand. 477 



colour, and presents a slight difference in the structure of the 

 mesosternal cavity ; in Elater myops the hinder border of the 

 cavity is distinctly more elevated than the middle portion, 

 whereas this is scarcely at all the case in Elater strangulatus. 

 Tairua ; sent by Captain Broun as no. 18. 



Group 13. — The form of the head is in these species that 

 described in Group 11 ; but the present species differ from 

 those of that group by the form of the prosternal process and 

 mesosternal cavity. The former is but little ( Corymhites anti- 

 podum and C. dubius) or not at all {Elater strangulatus and 

 myops) bent upwards ; and the saltatorial mucro is much pro- 

 longed. The borders of the mesosternal cavity are not ele- 

 vated ; the cavity does not extend to the intercoxal suture ; 

 its hind portion is rounded ; and the portion of the mesoster- 

 num between the opening and the intercoxal suture is some- 

 what, but only slightly, depressed. Most of the other charac- 

 ters resemble those of Group 11. 



43. Elater olwascens, White. 



E. subsenescens, longius griseo-pubescens, pedibus flavis ; antennis 

 rufescentibus, teniiibus, minus elongatis, baud serratis, articulis 

 secundo et tertio subsequalibus a sequentibus vix discedentibus ; 

 prothorace minus gracili, postice latiore, subtihter punctato ; 

 elytris profundius striatis, striis externis punctatis, interstitiis 

 parce subtiUssime punctatis, apicibus minute spinosis. Long, 

 9-11 m.m. 



This species is abundant at Auckland and Tairua, and is 

 found on Leptospermum. 



Ohs, This species has also been called Chrosis oeneola by 

 Cand^ze. 



44. Corymhites agriotoides, n. sp. 



C. rufo-fusculus, longius griseo-pubescens, antennis pcdibusque tes- 

 taceis ; iUis tenuibus, simplicibus, articulis secundo et tertio 

 elongatis, sequentibus simiHbus ; prothorace convexiusculo, mar- 

 gine laterali indistincto, parcius minus subtiHter punctato ; elytris 

 striatis, sed sculptura pubeseentia obtecta, apicibus fere muticis. 

 Long. 6|-92 m. m. 



This is a very variable species, and closely allied to Elater 

 olivascens, but may be readily distinguished by the different 

 colour, narrower form, more convex pro thorax, &c. 



Abundant at Auckland and Tairua ; found on shrubs. 



