768 STUDIES IN AUSTRALIAN NEUROPTERA, vi., 



removed somewhat inwards from the normal position. The mar- 

 ginal series is absent from both wings, and there is only a mere 

 vestige of the costal series, at the base of the wing. 



(Psychopsis meyricki McLachlan, which I have not seen, is 

 stated by its describer to have both discal and internal series 

 present in the forewing; but nothing is said as to the condition 

 of the hindwing; the costal series is absent). 



Reviewing the above evidence, it is clear that: — 



(1) The genus Psycho^ysis Newman, being founded upon Ps. 

 mimica Newman, a species which itself shows great variability 

 in the number of its series of cross-veins, cannot be restricted by 

 any definition which attempts to limit this variability. 



(2) The genus Artej'iopteryx Guer., founded upon P.s\ elegans 

 Guer., a species very closely allied to P><. mimica, and with almost 

 equally variable cross-venation, must be suppressed entirety, and 

 its type-species retained within Psychopsis Newman. 



(3) The genus Wernzia, as defined by Navas, does not even 

 include all the specimens of its type-species. If, however, the 

 definition of the genus be widened, then it at once forms a part 

 of the Psychopsi^-sei-ies of species, and should be included in that 

 genus. 



(4) The genus MagaUanes is founded upon a type-species which 

 grades into Wernzia in the characters of some of its individual 

 members. This should also, therefore, be removed back to 

 Psychopsis. 



If these conclusions be accepted, the genus Psychop)sis will 

 include forms showing a gradual transition, from four series to 

 two in the forewing, and from three series to one in the hind, 

 with scarcely a break anywhere in the series. Bearing in mind 

 that the gradations are not specific constants, but essentially of 

 individual value only, it must be evident that any attempt to 

 subdivide this genus, upon the basis of these variable characters, 

 is bound to fail. 



We have, therefore, to ask whether we should be content to 

 leave all the Australian species in the genus Psychoj^sis, or 

 whether we should seek for some new division. 



