LYCMmBJE. 
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 Pentila, middle one wanting , the radicd nervules having 
a common origin at extremity of upper one, — 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-wings 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 
tibiae about equal in length ; tibias 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 nervules (so that the 
middle disco- cellular nervule is obsolete) in the fore-wing, it stands alone 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 Lycmiidce. 
The only species, D. immaculata, Trim., from its general aspect and 
pale ochreous-yellow colour, might easily be mistaken for one of the 
smaller FierincB. It was one of Colonel Bowker's most valuable dis- 
coveries in Kaffraria ; 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. 
^ In IlesperocJiaris, a genus of South-American Picrince, 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 {loc. cit, 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 example figured (loc. cit., pi. v. f. 4) is 
undoubtedly a ? . The fore-tarsi do not differ in these three individuals. 
