cyiiEsTis. 247 
Genus CYRESTIS. 
Ci/restis, Boisduvul, Voy. Astrol., Lep. p. 117 (1833) ; Wcstwood, Gen. Uiuni. Lep. ii. 
p. 260 (1850) ; dc Niecvillc, Uutt. liid. ii. p. 218 (1886). 
" Body small, slender ; wings largo and delicate. 
" Head small, broader thuu the neck, but narrower than the middle of the thorax, strongly tutted 
in front. 
" Eyes very prominent, naked. 
" Antenna! not half the length of the fore- wings, very slender, and terminated by an elongated, 
very gradually formed, slender club. 
" Labial paJpi long, slender, directed upwards to about two thirds of the height of the eyes, 
and porrected to nearly twice the length of the head ; somewhat cylindrical, scaly ; basal 
joint clothed beneath with rather short woolly hairs ; second joint also similarly clothed 
on the upi)ersido, the joints not being apparent unless denuded of scales ; terminal joint 
nearly as long as the second, slender. 
" TnoKAX squamose, slightly hirsute behind ; collar narrow and distinct. 
" Fore iv!nf/s large, subtriangular. Fore margin slightl}' rounded. Apical margin somewhat 
truncate or slightly rounded, five sixths of the length of the fore margin, sinuated along its 
greater part ; apical angle rather acute ; anal angle cmarginate and somewhat lobed. 
Inner margin not above two thirds of the length of the anterior, rather rounded outwardly 
towards the base, but cmarginate beyond the middle. Costal vein slender, extending to 
the middle of the fore margin. iSubcostal vein rather thicker, its first branch arising at 
the distance of one third of the length of the wing fi-om its base ; second branch arising at 
a very little distance beyond the first, close to the anterior extremity of the discoidal cell ; 
third branch arising at about two thirds of the length of the wing ; fourth arising halfway 
between the base of the third and the tip of the wing, to which it extends, the terminal 
division of the vein itself being rather deflexed. Upper diseocellular very short and longi- 
tudinal, forming the base of the upper discoidal vein ; middle and lower diseocellular veins 
forming a straight transverse termination to the discoidal cell, which forms a triangle 
occupying about one third of the length of the wing, the lower diseocellular being about 
three times the length of the middle one, very slender, sometimes almost or entirely 
obsolete, and united with the median vein exactly at the base of its third branch, which is 
regularly arched. 
" Hind ivhif/s somewhat hexagonal, elongated. The costal margin nearly straight for more than 
half its length, when it is cmarginate to the outer angle. Outer margin sinuated from the 
outer angle to the extremity of the third branch of the median vein, where the wing is 
produced into a short, narrow, curved, and obtuse tail ; thence to the anal angle the wing 
appears truncate, the anal angle itself being developed into a short, broad, spatulated tail. 
Precostal vein forming a slender, curved, simple spur ; costal nervure much curved along 
its basal portion, then straight to the commencement of the emargination at the outer angle 
of the wing ; subcostal branched at about one fourth of the length of the wing from the 
base, emitting the upper diseocellular (close to the origin of its branch), which forms the 
base of the discoidal vein ; lower diseocellular arising at the same distance from the base of 
the upper diseocellular as exists between the base of the subcostal vein and its branch : 
