Mr. D. Sharp on the Elaterida^ of New Zealand. 473 



am pretty sure, the two sexes, tliough they are extremely 

 similar to one another ; they both show the peculiarity of a 

 well-marked notch or emargination at the apex of the last 

 ventral segment. 



35. Chrosis reversa, n. sp. 



G. sat elongata, minus parallela, nigra vel picea ; thorace quam 

 latiore paulo longiore, disco obsolete punctato ; elytris latius 

 striatis, striis externis evidenter punctatis, interstitiis subcon- 

 vexis, crebre punctatis, a])icem versus evidenter attenuatis, apici- 

 bus ipsis angustis, baud velvix prolongatis, angulis internis baud 

 vel vix spinosis ; prosterni lateribus nitidis impunctatis ; abdo- 

 mine parce punctato ; lamina coxali iuterne evidenter latiore, sed 

 margine posteriore supra trochanterem tantum obsoletissime emar- 

 giuato. Long. 16-17 m. m. 



The polished impunctate sides of the prosternum readily 

 distinguish this species. 



Described from a single specimen sent by H. Edwards, 

 Esq., under no. 1337 ; one of two individuals sent by the 

 same gentlemen under no. 1340 I believe to be the female of 

 the species, though it is very much broader and has the 

 thorax considerably larger and broader. A second individual, 

 which I believe to be a variety of this same sex, is in Mr. 

 Wakefield's collection from the Otira pass. 



36. Chrosis barbata, Cand^ze. 



C. nigricans, colore variabilis, ssepe rufescens, minus parallela, brevi- 

 ter fusco-pubescens ; tboraco latitudine longitudinem sequante, 

 crebre punctato ; elytris leviter striatis, striis evidenter punctatis, 

 interstitiis crebre punctatis, apicem versus evidenter attenuatis, 

 apicibus baud prolongatis, vel simplicibus vel obsolete spinosis ; 

 prosterni lateribus crebre punctatis ; lamina coxali interne evi- 

 denter latiore, margine posteriore supra trochanterem tantum 

 obsolete emarginato ; antennis pedibusque minus elongatis. Long. 

 13-19 m. m. 



This is an exceedingly variable sjjecies. It is closely allied 

 in structure to our European Elater impressus ; and the small 

 specimens are somewhat similar to it in appearance, but have 

 the elytra much more attenuate posteriorly. 



Very widely distributed ; I have seen specimens from 

 Otago and Auckland and various intermediate localities. 



Ohs. M. Cand^ze described this species as being found in 

 New Holland ; but Mr. Janson believes all the specimens are 

 from New Zealand; so that it is very doubtful whether the 

 species exists in Australia. 



