Mr. D. Sharp o/j the Elaterlda} of New Zealand. 47o 



puuctatis, intcrstitiis crebrc subtiliter punctatis, apicibua conjuiic- 

 tim rotundatis. Long. lG-2(» m.m. 



I have examined a considerable number of example.s, and 

 find only slight sexual differences in the structure. The 

 statement of M. Candbze that the male lias the antenna pecti- 

 nated and is the Elater punctithorax, Wiiite, is erroneous. 

 The Elater punctit/iorax of White is tlie same species as his 

 Elater IfTvithorax {vide no. 5 of this paper) ; the male of it 

 has the antennae pectinated, but the species is very different 

 in structure from Elater zealandicvs. 



Auckland, Tairua, Wellington. According to Captain 

 Brouu'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- 

 tenna3 serrate, with short 2nd joint. Prosternal process thick, 

 slightly curved upwards. Mesostemal cavity with very thick 

 strongly elevated borders, the posterior portions of which are 

 horizontal and quite on a level with the metastemum ; the 

 sides of the cavity are not parallel, but quite naiTOw 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 Tliorainus by the curved front edge of the forehead 

 and the large antennal spaces. Cand^ze has associated the 

 Elater zealandicus with Ockusternus Parryi in one genus, 

 which he calls Ochosternus \ 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 had better be withdrawn. 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, Cand^ze. 



C. elougatua, augustus, fuscus, antennis pedibusquc testaceia, densius 

 breviter griseo-pubcscens ; antennis tiliformibus, elongatis, arti- 

 culo st'cuudo sat elongato, sed quam tertius fere duplo breviore ; 

 prothoraco elongato, lateribua parallelis, fere dense punctato ; 

 elytris angustis, apicibus attenuatis, plus minusvc emarginatis et 

 spinosis, subtiliter stri.itis, intcrstitiis subtiliter fore dense punc- 

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



