isiti.] 321 



simple), not connected hy a line of ollique nervules ; only two series of gradate 

 nervules, one between the end of the radius and the apex of the wing, the other 

 before the middle ; neuration wholly pale. Posterior wings with no dark rounded 

 spot at end of radius, and almost witliout markings, except a few spots in the area 

 between subcosta and sector, and a faint indication of a darker line along the series 

 of gi'adate nervules. 



? . Length of body, 10 mra. Expanse of wings, 33 mm ; length of anterior 

 wing, 15^ mm., breadth, 12 mm. ; length of posterior wing, 12 mm., breadtli, 8 mni. 



Sab. : Birmah (one example in my collection). 



Ill size, and also in general appearance, this species is similar to 

 Ps. insolens, McLach., but the markings of the wings are much fainter, 

 and there ia no subapical rounded spot in the posterior wings, a cha- 

 racter so universal in the Australian species as to be of almost generic 

 value. 



Ps. hirmana differs also from all the Australian species, except 

 Ps. Meyricki, McLach., in the absence of a line of connecting oblique 

 nervules in the costal area, which line is somewhat differently placed 

 in the various species (in Meyricki there are indications of these 

 nervules at the extreme base) ; zehra, Brauer, is unknown to me, and 

 the description does not allude to either the presence or absence of 

 this line of nervules. 



In Ps. birmnna the costal margin is more abruptly dilated at the 

 base than in the Australian species, except Ps. elegans, Guer., and 

 perhaps Ps. mimica, Newm. On the other hand, the posterior wings 

 seem to be slightly narrower in proportion than in the Australian 

 species. There is a slight difference in the dilatation at the apex of 

 the space between the subcosta and sector alluded to in the description. 



According to neuration the species may be divided thus : — 



1. No line of oblique (gradate) nervules in the costal ai-ea of either pair of wings 



{zebra, Brauer, uncertain) ; only two series of transverse gradate nervules 

 in the anterior vi'vnga—Meyricki, McLach., bii'inana, McLach. 



2. With a line of such nervules in the costal area of both pairs of wings {zehra, 



Br., uncertain). 

 a. Four series of transverse gradate nervules in the anterior wings (the second 



rudimentary or incomplete) — mimica, Newm., zehra, Br. 

 h. Three series of such nervules — elegans, Guer., coelivaga, Wlk., insolens, 

 McLach. 

 Prof. Brauer (/. c.) questions elci/uns as perhaps not distinct from 

 mimicci^hnt in addition to the structural difference in neuration above 

 alluded to, it differs in its smaller size, quite distinct character of 

 markings, and in the much less produced anal angle of the anterior 

 wings, which is very pronounced in mimica. 



Lewisham, London : 



November 1th, 1891. 



