Transitional Form o/'Ornitlioptera. 297 



character, the nearest resembhmce to which is found in the 

 male of P. hephcestus so fur as I can discover ; it is also 

 nearly as rectangular in the female. 



Expanse of cosla 69 millini. ; width of upper wing 57 ; 

 length of hind wing 44-, width '6\ ; length of abdomen or 

 antennffi 31 ; of legs, first pair, femur 12, tibia 9, tarsi 12 ; 

 second pair, femur 12, tibia 12, tarsi 15 ; third pair, femur 11, 

 tibia 13, tarsi 15 millim. 



? . Primaries : costa equally arched but more rounded at 

 the apex, the outline insensibly passing into the posterior 

 margin, wliich is not so irregularly curved as in the male ; 

 inner margin nearly a straight line. Wings light fuscous 

 brown ] within the discoidal cell are faint atomic indications 

 of grey markings somewhat like those of the female of P. hali- 

 phron ; the grey discal rays very indistinct except those 

 enclosing the tirst and second median nervules (which are 

 fairly though faintly defined), broadly separated hytlie browa 

 margins of the nervules ; the pseudoaeura are only just 

 visible ; posterior margiu witii whitish fringe-lunules. 

 Secondaries slightly darker fuscous brown ; within the cell 

 a faint ochreous rufous-yellow spot close to the discocellular 

 rervules ; four very short narrow rufous-yellow discal marks, 

 the first 6 millim. long, close to the second discocellular 

 nervule, the second the same length from the cell, the space 

 between the second discocellular and first median nervules 

 broadly incurved and (on the right wing only) enclosing a 

 small brown dot; the third 7 millim. long from the cell, in- 

 dented two thirds its length, enclosing a brown spot (on the 

 right wing) ; the fourth 5 millim. long from the cell, indented 

 (on the right wing only about half the size) ; extremely 

 faint indications of a submarginal band of small spots ; the 

 submedian area of wing is clouded pale reddish ochreous, 

 meeting an anal, angular, ochreous, sublunate spot, from which 

 two rays run partly up the abdominal margin; margin suffi- 

 ciently scalloped, with ochreous fringe-lunules. 



Under surface : primaries the same colour as above ; the 

 grey rays and discocellular markings similar but much 

 broader, a brighter ochreous red at the outer margin, greenish 

 grey towards the base and confluent between the second dis- 

 coidal and second median nervules ; the marks within the cell 

 are formed of microscopic atoms, and are divided into three 

 submarks — the first broad, one third of the cell in length, the 

 second very narrow and divided by the second pscudoneurus, 

 the third or lower one nearly as broad and long as the first 

 and divided by the third pseudoneuriis ; the marginal fringe 

 with a nearly continuous row of ochreous lunules. Second- 



