HESPERIDI: THP: GENUS THORYBES. 1425 



position ludicateil ouly by the sllglitest possible bend in tlio sul)costal nervure, sorae- 

 wbat beyond Its fork; other veins as In Achalarus, but the Internal nervure slightly 

 longer than there. 



The scales enclosed in the costal fold of the male Include flagellate chain-bristles with 

 elongated links, obspatnlate, slender androconia, and on the pavement below the cos- 

 tal vein peg-like, minute androconia. 



Legs 2,3, 1, tufted as in .\clialarus ; femora 2, TTS; til)iao 2, 3, 1 ; tarsi 3, 2, 1 ; fore 

 and hind femora of equal length, the middle femora nearly half as long again. Fore 

 tibiae three-flfths the length of fore femora, half as long as the middle tibiae, which 

 are nearly as long as the middle femora ; hind tibiae as long as hind femora. Leaf- 

 like appeudage of fore tibiae long and slender, originating in the middle of the outer 

 two-thirds of the tibia, nearly six times as long as broad, considerably surpassing the 

 tip of the joint, slightly arcuate, tapering delicately throughout its length, pointed at 

 tip ; middle and hind tibiae furnished at tip with a pair of long, slender spurs, the hind 

 tibiae with a similar pair just beyond the middle. Tarsal joints 1, 2, 3, 5, 4, the apical 

 scarcely longer than the penultimate joint; fore tarsi considerably shorter than the 

 middle, two-thirds the length of the hind tarsi, as long as the middle femora; all with 

 a triple row of delicate spines, the apical ones of each joint considerably longer than 

 the others; basal joint as long as the rest together; second joint two-flfths as long as 

 the basal joint. Claws small, very slender, tapering, bent at right angles In the 

 middle; pad moderately large, roundish; paronychia apparently aborted. 



L''pper organ of male abdominal appendages small, not compressed, gently arched, 

 the hooks much as in Eudamus ; lateral arms forming a sheath similar to that of 

 Achalarus, reaching about to the middle of the hooks. Clasps pretty large, broad, 

 gently convex, at least twice as long as broad, nearly equal, with scarcely more mark 

 of the upper lobe than a transverse, deep notch or incision near the extremity of the 

 upper border, the apical parting of the clasp being full and upturned, so as to crowd 

 upon the hinder extremity of the lobe. 



Egg. Compact, subglobular, rather broader than high, the sides very full and well 

 rounded, broadest just above the tjase, the base flat, rounded at the edges, the upper 

 portion broadly rounded, the extreme summit fiat; furnished with a moderate number 

 of slight, straight, vertical ribs, extending from near the base to the rim of the sum- 

 mit, where, and next the edge of the summit itself, they are connected by three ap- 

 proximate, irregular sets of nearly as elevated cross ridges ; below, the egg is 

 traversed also by very frequent, delicate cross lines, at regular distances apart. 

 Micropyle rosette small, consisting of five or six oval cells surrounding a central 

 circle, and themselves surrounded by a single row or two of somewhat irregularly dis- 

 posed, slightly larger, roundish oval cells, all bounded by very delicate lines. 



Caterpillar at birth. Head suborbicular, higher than broad, smooth, the two lobes 

 separated by a moderately deep incision above, half as broad again as the body when 

 born. First tlioracic segment entirely corneous, the upper part, above the spiracles, 

 denser. Rest of body cylindrical, uniform, terminal joint broadly rounded. Der- 

 mal appendages long, slender, erect, tapering hairs, scarcely knobbed at tlie tip, seated 

 on warts arranged as follows : a supralateral series, scarcely in advance of the middle 

 on the thoracic, anterior on the abdominal segments, the bristles directed a little in- 

 ward; an infralateral series, central on the thoracic, postero-central on the abdominal 

 segments, the bristles directed a little backward; a suprastigmatal series on the abdom- 

 inal segments, centrally placed ; all the above with one papilla to a segment in each row ; 

 and an infrastigmatal series, also one to a segment, and centrally placed on the thoracic 

 segments, two to a segment on the abdominal segments, one either side of the middle, the 

 hinder a little lower than the other. Ilooklets of prolegs forming a continuous circle. 



Mature caterpillar. Head subglobular, the front aspect showing an almost com- 

 plete circle excepting for the slight indentation at the summit separating the two 

 hemispheres; less than half as high again as deep, of nearly equal depth in the lower 

 half, the front rapidly receding above to the comparatively shallow summit, poste- 

 riorly truncate ; collar longer than usual, narrower than usual, being scarcely a third 



