LYC^NID.E. 225 



nervure very short, extending only one-third length of costa ; sub- 

 costal nervure five-branched ; first and second nervules emitted before 

 extremity of discoidal cell ; third and fourth very short, emitted (not 

 far apart) nearer apex than cell, fourth ending at apex ; discoidal cell 

 short, rather narrow ; upper disco-cellular nervule long, directed longi- 

 tudinally as in Pcntila, middle one wanting, the radial nervides having 

 a common origin at extremity of njW^' ^*'^> — lower one long, oblique, 

 joining third median nervule at a very pronounced angle not far 

 beyond latter's origin ; median nervules emitted near together at lower 

 part of extremity of cell. Hind-vnngs almost ovate ; hind-margin very 

 convex, entire ; costa moderately arched ; costal nervure ending a little 

 beyond middle ; subcostal nervure branched a little before extremity of 

 cell, first nervule terminating at apex ; upper disco-cellular nervule 

 short, oblique, lower one much longer, scarcely curved, joining median 

 nervure at origin of second and third nervules ; submedian nervure 

 extending to anal angle ; internal nervure unusually long, extending to 

 considerably beyond middle of inner margin ; discoidal cell short, 

 rather narrow. Legs short, very thick, perfectly smooth; femora and 

 tibife about equal in length ; tibise without terminal spurs, but slightly 

 spinulose beneath ; tarsi rather long, spinulose beneath ; fore-legs not 

 differing in either sex (?) from the rest except in being rather smaller. 



Abdomen rather short and thick, scaly above, downy beneath (espe- 

 cially at extremity). 



This very isolated genus is difficult to place satisfactorily. In the 

 marked feature of the common origin of the radial nermdes (so that the 

 middle disco-cellular nermde is obsolete) in the fore-wing, it stands alone 

 in the Family, nor have I found the same arrangement in any other 

 genus of butterflies.^ When to this are added its wide head, very 

 swollen second joint of palpi, perfectly smooth legs (with tarsus of front 

 pair apparently fully developed in both sexes ^), and large wings with- 

 out spot or marking of any kind, it will be perceived that the sum of 

 its characters does not warrant its close association with any of 'the 

 other aberrant genera of Zgcwnida;. 



The only species, I), immacidata, Trim., from its genei'al aspect and 

 pale ochreous-yellow colour, might easily be mistaken for one of the 

 smaller Pierina:. It was one of Colonel Bowker's most valuable dis- 

 coveries in Kaflfraria ; and so exceedingly rare and local does the insect 

 appear to be, that during the past twenty-three years no addition has 

 been made to the three examples originally secured. 



1 In Ilesperocharis, a genus of South-American Pierincc, there is some approach to this 

 peculiarity, the middle disco-cellular nervule being very short, so that the two radials origi- 

 nate not far apart. 



^- As mentioned in my original notice of this genus {Joe. ciL, p. 82, note), I believe that 

 two of the only three specimens known to exist are males, judging from the smaller size 

 and much more slender abdomen. The large examjjle figured {loc. ciL, pi. v. f. 4) is 

 undoubtedly a 9 . The fore-tarsi do not differ in these three individuals. 



