Genera and Species of New Zealand Coleojttera. 47 



liave rather more conspicuous setre tlian the elytra, they are, 

 however, rather short aud depressed, and the punctuation 

 seems less coarse ; the third sejinicnt is rather lari^cr tlian 

 either of the basal two, the aj)ical is narrow and conical. 

 Legs and tarsi finely setose, the two hind pairs of tibiae 

 straight. 



Lenjith H, breadth y line. 



Ida Valley. 



A single monnted individual of this remarkable little 

 insect was kindly sent to me by Mr. J. II. Lewis. 



Group Pselaphidae. 

 Patreus, gen. nov. 



Body elongate. Antennal tubercles small. Hind body 

 elongate, basal three segments large, nearly equal, with deep 

 sutures. Metasternian elongate. Prosternum without visible 

 carina. Intermediate i^?7;/re remarkably short, curvate; basal 

 joints of intermediate tarsi enormously developed, second 

 smaller than first, the third elongate and slender ; with one 

 claw. 



This genus should be placed near Exeirarthra, the an- 

 tenucc, however, instead of being like those of Sagola, more 

 nearly resemble those of Zelandius. From the latter it is 

 distinguished by the more slender form, impunctate surface, 

 much smaller and more anteriorly narrowed head, oviform 

 thorax, shorter antennae, and slender legs. From all the 

 other Euplectini known to me it may be easily recognized 

 by the strongly developed basal joints of the middle tarsi, 

 which indeed somewhat resemble the male feet of an Aphilon, 

 one of the Phytophaga, but with the basal joints homo- 

 geneous in place of being distinctly separated. The tarsal 

 structure of Eaeirarthra, another curious form of this group, 

 is materially dift'ereut, the penultimate joint of the anterior 

 tarsi being distinctly lobate, whilst the terminal is provided 

 M'itli two claws. 



Patreus Leivisi, sp. n. 



Elongate, nitid, eastaneo-rufous ; legs, antenna?, and palpi 

 yellow ; sparingly clothed with long, slender, greyish 

 pubescence. 



Head small, the vertex deeply and unevenly excavate. 

 Anteniice ])ubescent, basal joint large, 2ud shorter aud not 

 quite as stout, joints 3-8 small aud bead-like, 9th larger 

 than the preceding one, but not so broad as the lOth^ 11th 



