82 Mr. R. Trimen on 



near base ; costal nervure short, not extending to middle ; 

 sub- costal with five branches, of which four end on costal 

 edge, and the 5tli on hind-margin immediately below 

 apex ; two discoidal nervules dissociated from the sub- 

 costals, and having a common origin at upper part of 

 extremity of discoidal cell ; the cell itself short, blunt, 

 closed by a straight slender nervule. Hind-wings almost 

 ovate ; costa gently arched ; inner-margins enveloping 

 underside of abdomen at base, and thence gradually 

 divergent ; costal nervure short, but ending a little be- 

 yond middle ; discoidal nervule separated from sub-costals 

 at its origin by a short disco- cellular nervule ; discoidal 

 cell short, blunt, its straight closing nervule meeting the 

 1st and 2nd medians at their common origin. Legs very 

 stout, smooth, without hairs ; the femur and tibia of each 

 about equal in length ; tarsi of front pair perfectly deve- 

 loped, 5-jointed, the ungues distinct.* Abdomen rather 

 short and thick, compressed laterally, arched in the 

 centre, enlarged posteriorly. 



I was for some time in much doubt as to the rela- 

 tions of this peculiar genus, but having, at the sug- 

 gestion of Mr. A. G. Butler, of the British Mu- 

 seum, carefully compared it with the American genus 

 Eumenia, Blanch. {Eumceus, Hiibn.), I feel satisfied that 

 its proper position will be with that group of butterflies. 

 Apart from the strong mark of affinity in the distinctly- 

 closed wing-cells, there is great similarity in the general 

 structure and proportions of the body, and especially in 

 the characters of the legs. Diff'erences amply warranting 

 the generic distinctness of Deloneura are, however, plainly 

 observable. In the latter the antenna3 are curved, 

 instead of straight and rigid as in Eumenia; the palpi 

 considerably shorter, more ascendant and divergent, the 

 terminal joint more slender, the middle joint much swol- 

 len: in the fore-iving there are five sub-costal nervules, 

 instead of only three, while the discoidal nervules have a 

 common origin, in place of being Avidely separated as in 

 Eumenia; and in the hind-wing, the closing nervule of 

 cell meets the 1st and 2nd median nervules at their 



* I regret that paucity of examples of the species on which this genus 

 is founded (of the three individuals before me two are the property of the 

 South-African Museum) i^reveuts me from actually ascertaining hy dis- 

 section whether the fore tarsi are identical in both sexes ; but, judging 

 from the external characters of the abdomen, the much larger size, and 

 the more rounded wings of one specimen, I believe it to be a female, 

 while the other two have the aspect of males. The fore tarsi are pre- 

 cisely similar in these three specimens. 



