Bates. — On the Geodephagous Coleoptera of New Zealand. 311 



Euthenarus brevicollis, n. sp. 

 E. oblongus, fusco-oeneus ; elytris subcupreis ; antennis basi, palpis apice, 

 genibusque piceo-rufis; thorace postice paululura angustato, angulis posticis 

 obtusis fere rotundatis, fovea utrinque lata sparsim punctulata ; elytris acute 

 striatis, interstitiis plains . Long. 2| lin. M. P. 



Lake Coleridge; under stones in dry lagoon (C. M. Wakefield, Esq.). 



Immature specimens have testaceous-yellow legs and pale under surface of 

 body ; but the dark brassy colour of tlie head and thorax and cupreous elytra 

 remain in all the numerous individuals sent. The hind angles of the thorax 

 are distinct in some examples and perfectly rounded off in others ; the basal 

 foveae also vary in the amount of punctuation, which is always rather coarse, 



Euthenarus puncticollis. n. sp. 

 E. oblongus, fusco-piceus seneo tinctus vel cupreo-aeneus ; antennis basi, 

 palpis basi et apice, pedibus (femoribus interdum exceptis) rufo-piceis ; thorace 

 longiore, postice subsinuatim paulo angustato, angulis posticis fere rectis, fovea 

 basali grosse punctata ; elytris apice fortiter sinuatis, subtruncatis. Long. 2 

 lin. M. P. 



Apparently distinct from E. brevicollis. although similar in size and 

 colouration. It is decidedly slenderer, -with longer thorax, the posterior 

 narrowing of which is slightly incurved and the hind angles more distinct. 

 The general colour is less metallic, and the side rims of the thorax are pale, 

 which is sometimes the case with E. brevicollis. A better distinction is the 

 more transverse and stronger sinuation of the apex of the elytra, the ed^es 

 external to the sinuation being more flattened out; they are finely and 

 sharply striated in the same manner. 



Auckland. Several examples from Mr. Lawson and Mr. H. Edwards. 



Subfamily Trechixjs. 

 Oopterus rotundicollis, White, Voy. Ereb. and Terr., Ins. p. G. 



Bay of Islands. 



viu. 



New Zealand ; precise locality unknown. 



Two other species of this genus are described from the Falkland Islands. 



It is very easy to confound this genus with Tropopterus, belonging to a 

 quite different subfamily, the resemblance in general form between the two 

 being very great. 



Subfamily Besibidiinje. 



Tachys antarcticus, n. sp. 



T. oblongo-oratus, convexus, testaceo-rufus nitidus, palpis pedibusque 

 flavo-testaceis ; capite foveis frontalibus, magnis, profundis, interspatio elongato, 



