Mr. D. Sharp on the Elaterid^ of New Zealand. Alb 



punctatis, interstitiis crebre subtiliter punctatis, apicibus conjunc- 

 tim rotundatis. Long. 16-20 m. m. 



I have examined a considerable number of examples, and 

 find onlj slight sexual differences in the structure. The 

 statement of M. Cand^ze that the male has the antennae pecti- 

 nated and is the Elater pmictithorax, White, is erroneous. 

 The Elater punctithorax of White is tlie same species as his 

 Elater Icevithorax [vide no. 5 of this paper) ; the male of it 

 has the antennee pectinated, but the species is very different 

 in structure from Elater zealandicus. 



Auckland, Tairua, Wellington. According to Captain 

 Broun's observations the species is of crepuscular or nocturnal 

 habits. 



Group 12. — The following are the chief structural charac- 

 ters of Elater zealandicus : — 



Forehead curved in front, but without the least raised 

 carina, in the middle of the front depressed, so that the clypeus 

 is very small ; and though it is almost vertical, yet it forms 

 only a very slight step between the forehead and the labrum ; 

 antennal spaces large, but yet rather broadly separated. An- 

 tennte serrate, with short 2nd joint. Prosternal process thick, 

 slightly curved upwards. Mesosternal cavity with very thick 

 strongly elevated borders, the posterior portions of which are 

 horizontal and quite on a level with the metasternum ; the 

 sides of the cavity are not parallel, but quite narrow near the 

 intercoxal suture. Trochanteral portion of coxal plate a little 

 broader than the femoral portion. Tarsi with all the joints 

 well developed and simple, the 4th shorter than the 3rd. 



This form is readily distinguished from the species I have 

 called Tliovamus by the curved front edge of the forehead 

 and the large antennal spaces. Candeze has associated the 

 Elater zealandicus with Ochosternus Parryi in one genus, 

 which he calls Ocliosternus ; but he has fallen into so much 

 error about these two species, that his definitions of the genus 

 had better be withdrawn. 



39. Corymhites antipodum^ Candeze. 



C. elougatus, angustus, fuscus, autennis pedibusque testaceis, densius 

 breviter griseo-pubescens ; antennis iiliformibus, elongatis, arti- 

 culo sccimdo sat elongate, sed quam tertius fere duplo brevaore ; 

 prothoracc elongate, lateribus parallelis, fere dense punctato ; 

 elytris angustis, apicibus attenuatis, plus minusve emarginatis et 

 spinosis, subtiliter striatis, interstitiis subtiliter fere dense punc- 

 tatis ; pedibus elongatis, tarsia longissimis. Long. 11-15 m. m. 



