770 STUOIKS IN AUSTRALIAX NEUROPTERA, vi., 



There now remain within the genus Psi/chopsis the six Austra- 

 lian species Dihuica Newman, (jracilis, n.sp., eleyans Guer., 

 cwlwof/iis Walker, insohns Walkei', and meyricki McLach. Of 

 these, the first three are distinguished by their usually larger 

 size, the somewliat angulated tornus of the wings, and the pink 

 or red colouration of the markings above the tornus of the fore- 

 wing. Contrasted with these, tlie other three are usually of 

 smaller size, with more rounded wings, the tornus not prominent, 

 and the colouration either fawn, brown, or black. It would 

 appear at first sight that these two groups suggest a natural 

 division of the genus into two. But, unfortunately, tlie species 

 elegans Guer., is so variable that it forms a connecting link 

 between the two groups. I have a number of specimens that 

 are no larger than well-sized examples of y*-. insolens', moreover, 

 the smaller the specimen, the more rounded does the wing 

 become; so that my series of elegans offers almost a complete 

 transition from the angulated tornus, seen in mhnica, to the 

 rounded toriuis of iusoleus. There remains, therefore, nothing 

 but the colour to go upon. The only conclusion I can legiti- 

 mately come to is, that these six species form a natural assem- 

 blage, which is best expressed as a single genus. But, having 

 said that, it should also be remarked that all six species are very 

 distinct forms, and there is no difficulty whatever in separating 

 them at sight. A key to these species will be found below. 



Key to the x\ u s t r a 1 i a n Genera. 



Ocelli vestigial. Fore and hindwings of almost equal width, 

 with the branches of Rs excessively numerous (27 to 32 

 in forewing, 18 to 24 in hind), exceedinglj' close together, so 

 as to give tlie wing the appearance of the close texture of spun 

 silk; dorsal margin strongly excavated before the tornus, the 

 latter very prominent, especially in the forewing. M at least 

 four-branched. Forewings with raised or embossed areas,... 

 ME<;ArsYCHOFS, n.g. (Type, Psychopsis illidgei Yvogga,tt). 



Ocelli absent. Hindwing distinctly narrower than fore. 

 Branches of Rs moderately numerous (from 7 to 16), not ex- 

 cessively close together; Al only two-branched; dorsal margin 

 straight or only slightly excavated; no i-aised or embossed 

 areas on forewing 2. 



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