HESPERU)!: THE GENUS EUDAilUS. 1379 



Fore wings (41 : G) triangular, nearly twice as long as broaii, the costal margin, 

 excepting at the extreme Imse, straight in the basal half, beyond which it begins to 

 curve and Is feebly arcuate in the apical half; upper half of the outer margin 

 moderately convex, almost bent at the independent nervule, the lower half straight 

 ■with a slight prominence at the submodian nervure; the apex of the wing is strongly 

 bent at less than a right angle, the extreme apex rounded off; the anal angle, on 

 account of the fulness of the wing at this point, is bent at about a right angle, the 

 inner margin straight, or with the least possible broad median excision. Costal 

 margin strongly thiclcened in the basal half of the wing; costal nervure terminating 

 almost as far beyond the tip of the cell as the width of the latter; first superior sub- 

 costal nervule originating opposite the second median nervule at about three-fifths 

 the distance from the base to the apex of the cell; the fourth superior subcostal 

 nervule arising just before the apex of the cell, and enclosing between its tip and that 

 of the subcostal nervure the apex of the wing; the second and third at equal distances 

 between the first and fourth ; first inferior subcostal ner%'ule bent at a strong angle at 

 its base to form a part of the closure of the cell, as far from its base as that is from 

 the origin of the fourth superior nervule; beyond this it runs directly to the margin, 

 excepting for a considerable basal arcuatiou, by which it approaches the subcostal 

 nervure proper, which in its turn here slightly diverges toward it ; first median nervule 

 arising near the middle of the basal half of the cell, the second at a long distance 

 beyond, the main vein connected with the basal angle of the first inferior subcostal 

 nervule by an extremely feeble oblique vein, which parts from it nearly opposite the 

 origin of the third superior subcostal nervule, and from the middle of it arises the 

 independent vein ; from the median nervure shortly before the union with the feeble 

 cross vein, a recurved shoot runs almost to the centre of the cell; internal nervure 

 short, distant from the submedian, turning abruptly upward and running into it below 

 the origin of the first median nervule ; cell about eight times as long as broad, and 

 more than two-thirds the length of the wing. 



Hind wings, exclusive of the tail, much longer than broad, the costal margin vei-y 

 strongly and regularly rounded at the base, the outer angle strongly rounded, not 

 much produced, the outer margin very .slightly convex, feebly crenulate, and as far as 

 the tail, which is a long and broad expansion of the membrane, equal on either side of 

 the submedian nervure ; this expansion is equal and lengthens the wing by from one- 

 half to the whole of its discal length, and is straight or slightly curved outward; the 

 inner margin is straight but for the decided aud well rounded lobe, whose highest 

 point is just within the extremity of the internal nervure. Costal nervure strongly 

 bent at the base in almost perfect correspondence with the margin of the wing ; the 

 precostal very insignificant, hardly to be noticed but for the enlargement of the main 

 vein at its base, which is close to the base of the wing; subcostal nervure running 

 nearly parallel to the extreme base of the costal, as far as the enlargement mentioned, 

 which bends downward to meet it and so encloses between the two a slight, long-oval 

 lacuna; from this point the subcostal bends at nearly a rig nt angle and runs in a 

 straight course, forking at about one-third the distance to the margin ; median forking 

 scarcely sooner than the subcostal, united barely beyond its last divarication with the 

 subcostal by a cross vein, which is obsolete, excepting at its extremities, but runs 

 parallel to the margin of the wing. 



The scales enclosed in the costal fold of the male include an elongated chain-bristle 

 with apical flagellum, a lanceolate but apically enlarged androconium and a peg-like 

 form of minute size. 



Legs 2, 3, 1*. Under surface of fore femora equally and closely tufted with very 

 short hairs ; middle and hind femora tufted loosely with very long hairs on the basal 

 half, the middle pair with shorter ones on the apical half; hind tibiae equally tufted 

 with long hairs above; femora 2, 1, 3; tibiae 2, 3, 1; tarsi 3, 2, 1 ; fore and hind 



• In this way, in the present family, I pro- members, the longest being placed first; where 

 pose to indicate the relative length of dilTcrcut a line crosses more than one they are equal. 



