16 Transactions. 



Eschatotypa derogatella, Walk. 



Characterized by its dull brownish-oclireoiis ground-colour, tendency to 

 confusion of the white markings, so that anterior half of wing is sometimes 

 wholly suffused with white, plentiful black strigulation. the ante-median 

 white fascia broadly dilated towards costa, shortly angulated above middle, 

 posterior part of clisc confusedly mixed with white and black scales, and 

 presence of distinct black sub-basal line in terminal cilia. 



Masterton, Wellington, Christchurch, Invercargill (and, according to 

 Walker, Auckland), from December to March. 



Eschatotypa melichrysa, Meyr. 



Characterized by clear yellow-ochreous ground-colour, well-defined and 

 separate white black-edged markings, ante-median white fascia very acutely 

 angulated in middle, and absence of black line in terminal cilia. 



Whangarei, Auckland, Nelson, Dunedin, Invercargill, in December and 

 January. My original description clearly included both species, but the 

 name (meaning " honey-golden ") is a relative definition of this one, and I 

 now limit it in that sense. ^ 



Mallobathra scoriota, n. sp. 



S . 13-14 mm. Head, palpi, thorax, and abdomen rather dark fuscous. 

 Antennae dark fuscous, ciliations 4. Fore wings elongate, costa gently arched, 

 apex obtuse, termen very obliquely rounded ; 6 present ; whitish-fuscous, 

 strewn with cloudy dark-fuscous strigulre ; a moderately broad slightly 

 oblique dark-fuscous median fascia ; a cloudy dark-fuscous spot on costa 

 at I ; the confluence of the strigula? tends to form suffused spots in disc 

 towards apex, and along termen : cilia whitish-fuscous, with dark-fuscous 

 ante-median shade and indistinct bars on basal third. Hindwings with 6 

 present ; grey ; cilia grey. 



Wellington (Hudson), Invercargill (Philpott) ; two specimens. 



Art. III. — On a Method of carrying out the Decimal Currency. 



By H. Skey. 



[^Read before the Otago Institute, 11th August, 1908.] 



It must be conceded by all that a revision of our tables of money, 

 weights, and measures is absolutely necessary. This is a true social 

 question, to be solved scientifically. Owing to the magnitude of the 

 undertaking, it would be impossible to deal with more than one of those 

 questions at a time, so that the general public might become conversant 

 with it first before undertaking the others. There is little doubt that 

 the commencement should be with the currency, and I think, if it can 

 be shown that the introduction of only one or two coins is all that is 

 necessary to give us the decimal system of counting, the following 

 nieihod is well worthy of consideration. 



We have now eleven different coins in our currency ; but the decimal 

 currency can be effected by the use of only seven, four of which are 



