Mr. D. ►Sharpen the Elutcrida? of New Zealand. 473 



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

 simihir to one another; they both sliow the peculiarity of a 

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

 ventral segment. 



35. Chrosis reversttj n. sp. 



C. sat clongata, minus parallela, nigra vel picea ; thorace quam 

 latiore paulo longioro, disco obsolete punctato ; clytris latiua 

 striatis, striis externis evidcnter ])unctatis, interstitiis subcon- 

 vexis, crebro puuctatis, apiccra versus evidcnter attenuatis, apici- 

 bu3 ipsis angustis, baud vel vix prolongatis, angulis intemis baud 

 vel vix spinosis ; prosterni lateribus nitidis impunctatis ; abdo- 

 minc parce punctato ; lamina coxab interne evidcnter latiore, sed 

 margiue posteriore supra trocbanterem tantum obsoletissime emar- 

 ginato. Long. lG-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 harhata, Cand^ze. 



C. nigricans, colore variabilis, sape rufcsccns, minus parallela, brevi- 

 tcr fusco-pubesceus; thorace latitudinc longitudinem aiquante, 

 crebre punctato ; eljtris levitcr striatis, striis c\'identer puuctatis, 

 interstitiis crebre pimctatis, apicem versus evidcnter attenuatis, 

 apicibus baud prolongatis, vel simplicibus vel obsolete spinosis ; 

 prosterni lateribus crebre punctatis ; lamina coxali interne evi- 

 dcnter latiore, marginc posteriore supra trocbanterem tantum 

 obsolete cmarginato ; antennis pedibusquo minus elongatis. Long. 

 13-19 m.m. 



This is an exceedingly variable species. 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 nmch more attenuate posteriorly. 



Very widely distributed ; I have seen specimens from 

 Otago and Auckland and various intermediate localities. 



Obs. 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. 



