TRANSFORMATIONS OF EUM^US ATALA. 415 



yond nearly straight until toward tlie tip, where it slopes downward ; outer margin gently 

 and almost regidarly convex, bending slightly next the lower median nervule ; inner mar- 

 gin nearly straight. Costal nervure (fig. 13) terminating at about the middle of the outer 

 two-thirds of the costal margin; subcostal nervure with two superior and two inferior 

 branches, itself striking the tijD of the wing ; the first superior nervule is thrown off a little 

 beyond the middle of the cell, the second midway between it and the tip of the cell ; the first 

 inferior nervule is continuous with the upper margin of the cell, and ^jarts from the main 

 stem either just before ( ? , fig. 13) or just beyond ( $ , fig. 15) the tip of the cell, without 

 the intervention of any discocellular vein ; the lowest subcostal nervule is connected mth 

 the main stem by an almost obsolete discocellular vein, which unites with the base of the 

 nervule at an angle of about 130°. The origin of the first and second median nervules 

 corresponds to that of the two superior subcostal nervules ; and the nervule closing the cell 

 unites with the apical portion of the median nervule at a right angle. 



Hind wings : costal margin very slightly convex beyond the well arched base ; outer 

 margin fidl and pretty regularly rounded ; inner margin gently convex, all the angles well 

 rounded. Costal nervure strongly arched at the base, beyond running subparallel to the 

 costal margin which it strikes close to the tip ; the subcostal nervules are separated at equal 

 intervals, the nervule uniting the bases of the second and third nearly obsolete excepting 

 above ; the median nervides similarly arranged, the nervule closing the cell lying at right 

 angles to apical portion of the median nervule ; internal nervule striking the middle of 

 the inner margin. 



Fore-tibiae and tarsi two-thirds ( S , fig. 17) or three-fourths ( ? , fig. 16) as long as those of 

 the hind legs, the tarsi consisting either ol a single, nearly uniform but tapering, wholly exar- 

 ticulate joint, a little smaller than the tibia?, slightly curved downward at the tip, heavily 

 clothed with scales and armed profusely beneath with spines, the apical ones of which are 

 sHghtly stouter than the others and slightly curved, the apex of the joint abruptly docked, 

 fringed densely with a pile of delicate short hairs representing the paronychia, and supplied 

 above with three or four long curved hairs directed forward {i^ ); or distinctly five jointed, 

 tapering, the first four joints scarcely smaller than the tip of the tibia?, the apical joint 

 much smaller; the three middle joints of equal length and together scarcely equalhng the 

 the first in length, the last nearly equalling in length the two previous joints ; all pro- 

 fusely armed beneath with stout and slender spines, and at tip with still stouter naked spurs, 

 all straight and tapering; the apical joint supplied with apical hairs, claws and well devel- 

 oped paronychia, similar to those of the other legs but smaller, the paronychia slenderer 

 and less heavily fringed ( ? ). Middle femora with a heavy fringe of scales on its inferior 

 surface growing more prominent away from the base, but at the tip suddenly shortening so 

 that the edge of the scales shows a concave excision ; tibia? and tarsi thickly covered with 

 closely appressed scales, the tarsi with a pair of distant, scarcely divergent, small, com- 

 pressed, slightly curved, regularly tapering, finely pointed claws ; pulvillus small but thick 

 and stout ; paronychia broad and rather short, subtriangular, the lower portion the most 

 protuberant, the edge heavily fringed with minute curving hairs. 



Tlie aljdominal appendages of the male are almost entirely concealed by the terminal seg- 

 ment which so completely encloses them as to leave only a small oval vertical opening, 

 through which protrude the acicular, apically expanded intromittent organ and a pair of 

 pencils of long hairs which have their origin on either side of, and above it ; the ujiper 



