RY R. J. TILLYARD. 767 



pjpgan^ in A7'ferioptery:i\ and neumiani in Psychopsis, altliough 

 they are one and the same species ! I 



Piii/chopt^i:^ ccelivagus (Walker). — Five specimens have been 

 examined. The forewing has the terminal and discal series com- 

 plete, the internal series eithei' complete or incomplete. In the 

 hind wing, the internal series is absent, the terminal series is 

 complete, and the discal series is very variable. It may he com- 

 plete and in normal position, or it may be remo\'ed inwards to a 

 position midway between the normal positions of the discal and 

 internal series, or it may be entirely replaced by irregular cross- 

 veins; in one specimen, the disc is covered nearly all over by 

 ii'regular cross-veins, not forming any gradate series at all. This 

 xariability should be contrasted with Navas' definition of the 

 genus Wernzia, of which this species is the genotype. 



Psyrhopsis inmlens Walker. — Twenty-one specimens have been 

 examined. In this species, the forewing has the discal series 

 complete, the internal either complete or nearly so. The terminal 

 series is usually quite absent; but, in some cases, there are from 

 one to five cross-veins belonging to the upper end of this series. 

 In the hindvving, the discal series is complete, the internal series 

 very variable. Normally either absent or represented by only 

 one cross- vein, it is nevertheless present in a fair percentage of 

 specimens, either as an incomplete series of two or three veins, or 

 as a complete series of four consecutive veins; further, right and 

 left wings do not always show the same condition. The terminal 

 series is absent in the hindwings; and the costal series, which is 

 complete in both wings of all the preceding species, is here 

 reduced to a shorter series, running from the base outwards for 

 a variable distance, from one-third to two-thirds the entire length 

 of the costal area. Thus we see that Navas definition of the 

 genus Mayalhtnes, of which this species is the genotype, will not 

 include the whole of the specimens examined. 



Finally, in a single specimen of a new species (Plate Ixxviii., 

 fig. 11), which will form the type of a new genus, we find the 

 discal and internal series present on both fore- and hindwings, 

 the discal series of the hindwings being not quite complete, and 



