84 Mr. D. Sharp on some 



under surface, the elongate metasternum, the narrow 

 hgula, and more elongate maxillary palpi are abundantly 

 sufficient for generic distinction. The form is very similar 

 to that of the Patagonian genera, Sericoides and 

 Listnmi/x, and it is probable that, notwithstanding the 

 slight difference in the porrection of the labrum, it is 

 more allied to them than it is to Odontria. Listronyx 

 has a similarly-formed club of the antenna, except that 

 it is 5- instead of 4-jointed. It is probable that Lacor- 

 daire pursued an erroneous course in uniting White's 

 genus Eitsoma\V\i\\ Odontria, but as I am not acquainted 

 with the insect described by White I cannot speak with 

 decision as to this. 



Sericospilus advena, n. s. 



Suboblongus, parum convexus, fere parallelus, supra 

 opacus, subtus sat nitidus, haudvestitus, corporis margine 

 laterali setuloso, capite anterius ferrugineo, posterius 

 nigricante ; prothorace irregulariter punctato, fusco- 

 ferrugineo, lateribus dilutioribus ; elytris ferrugineis 

 nigro quasi marmoratis, plagis his nigris, lateraliter 

 visis, opalescenti-micantibus, j)ectore pedibusque tes- 

 taceis ; tarsis elongatis, gracilibus. Long. 13, lat. 6 mm. 



The colour and sculpture of the wing-cases is peculiar ; 

 they have a rather indefinite but not coarse punctuation, 

 which is not arranged in series, and they are indistinctly 

 costate longitudinally, the appearance of being ribbed 

 being caused apparently quite as much by the arrange- 

 ment of the colours as by elevation of the surface ; the 

 colour is obscure yellowish, but there are numerous 

 patches of dark colour arranged in a serial manner ; 

 these patches are of irregular outline, and those in each 

 series tend to be connected with one another ; seen in a 

 certain light the elytra assume in consequence of 

 these patches a brilliant appearance. The sides of the 

 breast are rather closel}' punctate. 1 have five indi- 

 viduals before me, but can detect no sexual distinctions. 



Greymouth ; No. 126, Helms. New Zealand ; No. 1860, 

 Henry Edwards, Esq. 



