480 HydrophilidcB of New Zealand. 



Phelerosus, n.g. 

 Antennae T-articulatae ; palpi maxillares parum elongati, articu- 

 lis longitudine' subsequalibus ; prothorace elytris angustiore basi 

 quam apice hand latiore ; prosternum ante coxas omnium brevis- 

 simum. Femora posteriora glabra. Generi Berosi proximns sed 

 femora posteriora tantum ad summnm basin pnbescentia discedit. 



Although so close to the widely-distributed genus 

 Berosus, I think this insect had better be isolated there- 

 from, the hind femora being pubescent only where they 

 touch the coxae ; the side-pieces of the prosternum are 

 less prolonged inwardly than they are in Berosus, and 

 the prothorax is slightly impressed on the middle. 



Phelerosus pallidipennis, n. s. 



Capita thoraceque seneis, densissime punctatis, bujus margine 

 anteriore et lateribiis cumque elytris pallida testaceis ; subtus niger ; 

 pedibus palpis antennisque testaceis, femoribtis basi nigro, palpis 

 apice infuscato ; elytris striatis, interstitiis parce obsoleteque pmic- 

 tatis. Long. 4 mm. 



Eyes very prominent ; tliorax sinuate at the sides, with the 

 angles rounded, and a broad, rather indistinct, impression on the 

 disc, and a slight ciliation near the front angles ; scutellum 

 metallic, closely punctate ; elytra convex, very regularly and dis- 

 tinctly striate, the striae distinctly punctm-ed, the scanty punctua- 

 tion of the interstices quite indistinct. 



A specimen of this species was first sent to me by G. 

 M. Thomson, Esq., from Dunedin, and shortly after- 

 wards Mr. Helms sent three individuals from Grey- 

 mouth. 



