Fereday. — On new Species of Heteropterous Lepidoptera. 195 



I have described this butterfly from a single specimen submitted to me 

 by Mr. J. D. Enys for description. He informs me that it was captured by 

 Mr. E. Helms, of Greymouth, at an altitude of about 1,200 to 1,500 feet 

 above the sea. Unfortunately the specimen is chipped and frayed at the 

 anal angle of the hindwings, so that the caudate form of that angle cannot 

 be exactly defined. 



The genus of the insect I do not venture to determine, not having access 

 to the descriptions of the various genera of the family to which it belongs. 



There appears to be much confusion in the definition of the neuration of 

 the wings of Lepidopterous insects — especially with reference to the notation 

 of the nervules, or branches of the nervures, which are indicated by num- 

 bers — in consequence of some entomologists counting in a direction from 

 the costa towards the inner margin, and others in the opposite direction. 

 I have therefore thought it desirable to state that in the above description 

 I have adopted the former notation, that is counting from the costa towards 

 the hind margin, a notation which accords with that indicated in the dia- 

 gram of " Terminology of the wings of Papilionidce" given in " Catalogue 

 of Lepidopterous Insects in collection of the British Museum, part 1, 

 Papilionidae, 1852." 



I take the present opportunity of calling attention to the very incorrect 

 reprint, in Mr. J. D. Enys' Catalogue of the Butterflies of New Zealand, 

 1880, of my diagram illustrating the difference of neuration in the wings 

 of Erebia blandina, Percnodaimon pluto, and Erebiola butleri. The inaccuracy 

 renders the diagram worse than useless, inasmuch as the object of my dia- 

 gram was to show the position of the nervures and nervules, and in the 

 diagram in Mr. Enys' Catalogue they are wrongly placed. Great care 

 should always be taken in printing diagrams of this character. 



Art. XIX. — Description of two new Species of Heteropterous Lepidoptera. 



By E. W. Fereday, M.E.S.L. 



[Read before the Philosophical Institute of Canterbury, BOth November, 1882.] 



Fam. LEUCANID^, Guen^e. 



Genus Leucania, Ochs. 



Leucania pnrdii, n. sp. 



Male. — Head and thorax dark pinkish-ochreous-yellow, darkest in front ; 

 abdomen paler and greyish at base. 



Primaries above dark pinkish cedar colour, a dash of ochreous-yellow 

 occupying the areolet between the submedian nervure and the third median 

 nervule, the dash being very bright at the base and fading towards the pos- 



