524 COLEOPTERA 



but may be at present arranged in the same genus with that species ; it 

 is of more slender and depressed form ; has the rostnim more slender 

 and the head is very much smaller, so that the smooth neck is continued 

 forwards almost directly as the rostrum ; the antennce are more slender, 

 the joints before the club being bead-like instead of transverse ; the 

 lobes of the third tarsal joint are remarkably largely developed and 

 distinct ; and the hind coxce are rather more distant ; in 6". subcBiiescens 

 the antennal scrobes are remarkably well developed, and are continued 

 backwards, passing to the under-surface of the rostrum, while in S. 

 setiger they are quite small and indistinct. 



I received a specimen of this species a few months ago from Capt. 

 Broun. It was found by him at Tairua. A second individual, sent by 

 Capt. Broun at the same time, belongs doubtfully to this species ; it is 

 more rufescent in colour, and has the seta? of the upper surface less 

 developed, and shows also other slight differences in sculpture and 

 structure. 



Mesoxenopliasis. 



Wollaston ; Cistula Eiitomologica, vol. i.,/. 199. 



Corpus minutum, fusiforme, angustum, nitidum, calvum, clare pal- 

 lido-castaneum ; capite sub-globoso, rostro longiusculo, graciusculo, 

 parallelo (aut postice etiam sub-graciliore), ociilis parvis, demissis, superi- 

 oribus {i.e., supra baud latissime separatis) ; prothorace regulariter ovali 

 (sc. in medio rotundato, antice et postice pequaliter angustiore), convexo, 

 antice integro (nuUo modo etiam obsolete constricto) ; scutello distincto, 

 rotundato j elytris fusiformibus basi truncatis, convexis ; metasteriw bre- 

 viusculo ; abdominis segm. i"^° et 2^0 inter se omnino suffusis (vix obso- 

 lete separatis). Antennce longiusculse, graciusculae, mox ante medium 

 rostri insertae; funiculi (5-articulati) art. 2*^^ sequentibus sensim longiore; 

 capitulo magno, elongate. Pedes longiusculi, crassiusculi ; tarsis art. 

 J mo vix elongate, 3*''' multo latiore et profunde bilobo. 



A Mesoxenus (i.e.., Amaurorrhinus), et phasis, aspectus. 



Obs. — Genus corpore fusiformi calvo, rostro graciusculo, oculis sub- 

 approximatis,antennis longiusculis sub-gracilibus,tarsorumque art. 3*^° pro- 

 funde bilobo Microtribo (Novte Zealandite) simillimum ; sed scutello 

 conspicuo (nee obsolete), oculis omnino demissis ac minus grosse gran- 

 ulatis, prothorace antice nullo modo constricto, funiculo minus laxo, 

 capitulo minus abrupto, celoreque pallido, inter alia, facile distinguitur. 

 A Sericotrogo differt corpore calvo et magis fusiformi, rostro antennisque 

 gracilioribus, oculis sub-approximatis demissis (nee late separatis promi- 

 nentibus), prothoraceque integro. 



The position of the present curious genus, which is founded upon a 

 minute Cossonid detected by Captain Broun in New Zealand, and 

 recently communicated to me by Dr. Sharp, appears to be amongst 

 those particular types of the Pcnta^-thrides in which the eyes and scutel- 

 lum are developed, and the body is free from every trace of pubescence; 

 for although Sericotrogus is the form near which I should be inclined to 

 place it, I may add that the coarse decumbent fulvescent hairs with 



